Gotowe bibliografie tematyczne / Conducting Polymer Nanotubes

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Gotowa bibliografia na temat „Conducting Polymer Nanotubes”

Autor: Grafiati

Data publikacji: 7 września 2023

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Artykuły w czasopismach na temat "Conducting Polymer Nanotubes"

Rivière, Pauline, Tiina E. Nypelö, Michael Obersriebnig, Henry Bock, Marcus Müller, Norbert Mundigler i Rupert Wimmer. "Unmodified multi-wall carbon nanotubes in polylactic acid for electrically conductive injection-moulded composites". Journal of Thermoplastic Composite Materials 30, nr 12 (23.05.2016): 1615–38. http://dx.doi.org/10.1177/0892705716649651.

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Tailoring the properties of natural polymers such as electrical conductivity is vital to widen the range of future applications. In this article, the potential of electrically conducting multi-wall carbon nanotube (MWCNT)/polylactic acid (PLA) composites produced by industrially viable melt mixing is assessed simultaneously to MWCNT influence on the composite’s mechanical strength and polymer crystallinity. Atomic force microscopy observations showed that melt mixing achieved an effective distribution and individualization of unmodified nanotubes within the polymer matrix. However, as a trade-off of the poor tube/matrix adhesion, the tensile strength was lowered. With 10 wt% MWCNT loading, the tensile strength was 26% lower than for neat PLA. Differential scanning calorimetric measurements indicated that polymer crystallization after injection moulding was nearly unaffected by the presence of nanotubes and remained at 15%. The resulting composites became conductive below 5 wt% loading and reached conductivities of 51 S m−1 at 10 wt%, which is comparable with conductivities reported for similar nanocomposites obtained at lab scale.

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Zakaria, Mohd Yusuf, Hendra Suherman, Jaafar Sahari i Abu Bakar Sulong. "Effect of Mixing Parameter on Electrical Conductivity of Carbon Black/Graphite/Epoxy Nanocomposite Using Taguchi Method". Applied Mechanics and Materials 393 (wrzesień 2013): 68–73. http://dx.doi.org/10.4028/www.scientific.net/amm.393.68.

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Polymer composite has attracted many researchers from various field of application due to its unique features and properties including light weight, low cost, ease to process and shaping and corrosion resistant [1-3]. Fillers is typically added to enhance the chemical and physical properties of polymers [4, 5]. One of the properties is the electrical conductivity. Carbon based filler such as graphite (G), carbon black (CB), carbon fibers (CF) and carbon nanotubes (CNT) has been extensively used to improve electrical properties of polymer composite [6-8]. Electrical properties of the composite can be explained from percolation theory which means electrical percolation in mixtures of electrically conducting and non-conducting materials [9]. The concentration of conducting phase must above the critical value called percolation threshold, in order for the material become electrically conductive [10].

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Moheimani, Reza, i M. Hasansade. "A closed-form model for estimating the effective thermal conductivities of carbon nanotube–polymer nanocomposites". Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 233, nr 8 (31.08.2018): 2909–19. http://dx.doi.org/10.1177/0954406218797967.

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This paper describes a closed-form unit cell micromechanical model for estimating the effective thermal conductivities of unidirectional carbon nanotube reinforced polymer nanocomposites. The model incorporates the typically observed misalignment and curvature of carbon nanotubes into the polymer nanocomposites. Also, the interfacial thermal resistance between the carbon nanotube and the polymer matrix is considered in the nanocomposite simulation. The micromechanics model is seen to produce reasonable agreement with available experimental data for the effective thermal conductivities of polymer nanocomposites reinforced with different carbon nanotube volume fractions. The results indicate that the thermal conductivities are strongly dependent on the waviness wherein, even a slight change in the carbon nanotube curvature can induce a prominent change in the polymer nanocomposite thermal conducting behavior. In general, the carbon nanotube curvature improves the nanocomposite thermal conductivity in the transverse direction. However, using the straight carbon nanotubes leads to maximum levels of axial thermal conductivities. With the increase in carbon nanotube diameter, an enhancement in nanocomposite transverse thermal conductivity is observed. Also, the results of micromechanical simulation show that it is necessary to form a perfectly bonded interface if the full potential of carbon nanotube reinforcement is to be realized.

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Abidian, M. R., D. H. Kim i D. C. Martin. "Conducting-Polymer Nanotubes for Controlled Drug Release". Advanced Materials 18, nr 4 (17.02.2006): 405–9. http://dx.doi.org/10.1002/adma.200501726.

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Sa'aya, Nurul Syahirah Nasuha, Siti Zulaikha Ngah Demon, Norli Abdullah i Norhana Abdul Halim. "Morphology Studies of SWCNT Dispersed in Conducting Polymer as Potential Sensing Materials". Solid State Phenomena 317 (maj 2021): 189–94. http://dx.doi.org/10.4028/www.scientific.net/ssp.317.189.

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Novel electronic nanomaterial, the carbon nanotube (CNT) has emerged in many sensor applications as such its state dispersion has considerable importance to ensure the sustainability of its electronic properties. In this paper, we reported a state of art conductivity mapping on nanostructure surface of single walled carbon nanotubes (SWCNT) and poly(3-hexylthiophene-2,5-diyl), (P3HT) as potential sensing film. This composite is proposed to give selective analyte anchoring across the film as well as improved carrier mobility. The easy solution processing method was chosen to produce non-covalently wrapped conducting polymer onto the surface of SWCNT. We successfully observed high resolution images of the SWCNT walls that indicated increase of the thickness due to polymer wrapping. The image obtained from conductivity atomic force microscopy (CAFM) show the film’s electrical distribution that correlated with the observed nanostructure of film. Supporting optical characteristics of the nanocomposite obtained from UV-Vis spectroscopy and Raman spectroscopy discussed the morphology of the polymer wrapping and the state of dispersion of the polymer and the nanotubes. It is hypothesized the filament structures made by P3HT/SWCNT can give better sensing performance due to modification of π-π electronic band of SWCNT.

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KIM, CHEOL, i XINYUN LIU. "ELECTROMECHANICAL BEHAVIOR OF CARBON NANOTUBES-CONDUCTING POLYMER FILMS". International Journal of Modern Physics B 20, nr 25n27 (30.10.2006): 3727–32. http://dx.doi.org/10.1142/s0217979206040271.

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A relationship between strain and applied potential is derived for composite films consisting of single-wall carbon nanotubes (SWNTs) and conductive polymers (CPs). When it is derived, an electrochemical ionic approach is utilized to formulate the electromechanical actuation of the film actuator. This relationship can give us a direct understanding of actuation of the nanoactuator. The results show that the well-aligned SWNTs composite actuator can give good actuation responses and high actuating forces available. The actuation is found to be affected by both SWNTs and CPs components and the actuation of SWNTs component has two kinds of influences on that of the CPs component: reinforcement at the positive voltage and abatement at the negative voltage. Optimizations of SWNTs-CPs composite actuator may be achieved by using well-aligned nanotubes as well as choosing suitable electrolyte and an input voltage range.

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Liu, Yang, John H. Xin, Xinyu Zhang i Chao Zhang. "Morphological Evolvement of Carbon Nanotubes Synthesized by Using Conducting Polymer Nanofibers". International Journal of Polymer Science 2020 (2.03.2020): 1–8. http://dx.doi.org/10.1155/2020/4953652.

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Carbon nanotubes were synthesized by using a nanostructured conducting polymer—the polypyrrole nanofiber via microwave radiation. The radiation time was set to be 30, 60, and 90 seconds, respectively. The morphological evolvements of the as-synthesized carbon nanotubes with increased radiation time (e.g., shape, diameter, wall structure, and catalyst size) were carefully investigated, and the possible growth mode was discussed in detail. It was found that the growth mode of the carbon nanotubes synthesized from the conducting polymer substrate under microwave radiation was complex and cannot be simply interpreted by either a “tip” or “base” growth model. A new growth mode of the “liquifying cascade growth” was observed for the as-synthesized carbon nanotubes, as their growth was directed by a series of liquified iron nanoparticles with sequentially decreasing sizes, similar to the cascade of liquid droplets. And it could provide useful insights for the morphological and structural designs of the carbon nanotubes prepared by related microwave-based methods.

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Biswas, Sourav, Tanyaradzwa S. Muzata, Beate Krause, Piotr Rzeczkowski, Petra Pötschke i Suryasarathi Bose. "Does the Type of Polymer and Carbon Nanotube Structure Control the Electromagnetic Shielding in Melt-Mixed Polymer Nanocomposites?" Journal of Composites Science 4, nr 1 (15.01.2020): 9. http://dx.doi.org/10.3390/jcs4010009.

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A suitable polymer matrix and well dispersed conducting fillers forming an electrically conducting network are the prime requisites for modern age electromagnetic shield designing. An effective polymer-based shield material is designed that can attenuate 99.9% of incident electromagnetic (EM) radiation at a minimum thickness of <0.5 mm. This is accomplished by the choice of a suitable partially crystalline polymer matrix while comparing non-polar polypropylene (PP) with polar polyvinylidene fluoride (PVDF) and a best suited filler nanomaterial by comparing different types of carbon nanotubes such as; branched, single-walled and multi-walled carbon nanotubes, which were added in only 2 wt %. Different types of interactions (polar-polar and CH-π and donor-acceptor) make b-MWCNT more dispersible in the PVDF matrix, which together with high crystallinity resulted in the best electrical conductivity and electromagnetic shielding ability of this composite. This investigation additionally conceals the issues related to the thickness of the shield material just by stacking individual thin nanocomposite layers containing different carbon nanotube (CNT) types with 0.3 mm thickness in a simple manner and finally achieves 99.999% shielding efficiency at just 0.9 mm thickness when using a suitable order of the different PVDF based nanocomposites.

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KIM, B. H., D. H. PARK, Y. K. GU, J. JOO, K. G. KIM i J. I. JIN. "ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES OF π-CONJUGATED POLYMER NANOTUBES AND NANOWIRES". Journal of Nonlinear Optical Physics & Materials 13, nr 03n04 (grudzień 2004): 547–51. http://dx.doi.org/10.1142/s0218863504002249.

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Nanotubes and nanowires of π-conjugated polypyrrole (PPy) and poly (3,4-ethylenedioxythiophene) were synthesized using Al 2 O 3 nanoporous template through electrochemical polymerization method. From the SEM and TEM photographs, the formation of conducting polymer nanotube (CPNT) and nanowire (CPNW) was confirmed. From FT-IR and UV/Vis absorbance spectra, we observed the effect of doping and de-doping through HF or NaOH dissolving of Al 2 O 3 template. DC conductivity and I–V characteristics as a function of temperature and gate bias were measured for the CPNTs and CPNWs prepared with various synthetic conditions. Magnetic properties were measured through EPR experiments. Based on the results, we compare the intrinsic properties between bulk and nanoscale π-conjugated polymers.

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Trchová, Miroslava, i Jaroslav Stejskal. "Polyaniline: The infrared spectroscopy of conducting polymer nanotubes (IUPAC Technical Report)". Pure and Applied Chemistry 83, nr 10 (10.06.2011): 1803–17. http://dx.doi.org/10.1351/pac-rep-10-02-01.

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Polyaniline (PANI), a conducting polymer, was prepared by the oxidation of aniline with ammonium peroxydisulfate in various aqueous media. When the polymerization was carried out in the solution of strong (sulfuric) acid, a granular morphology of PANI was obtained. In the solutions of weak (acetic or succinic) acids or in water, PANI nanotubes were produced. The oxidation of aniline under alkaline conditions yielded aniline oligomers. Fourier transform infrared (FTIR) spectra of the oxidation products differ. A group of participants from 11 institutions in different countries recorded the FTIR spectra of PANI bases prepared from the samples obtained in the solutions of strong and weak acids and in alkaline medium within the framework of an IUPAC project. The aim of the project was to identify the differences in molecular structure of PANI and aniline oligomers and to relate them to supramolecular morphology, viz. the nanotube formation. The assignment of FTIR bands of aniline oxidation products is reported.

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Rozprawy doktorskie na temat "Conducting Polymer Nanotubes"

Tahhan, May. "Carbon nanotubes and conducting polymer composites". Intelligent Polymers Research Institute - Faculty of Science, 2004. http://ro.uow.edu.au/theses/407.

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A nanocomposite is defined as a material of more than one solid phase, where at least one dimension falls in the nanometer range. The combination of carbon nanotubes (CNT) and conducting polymers offers an attractive route for the production of novel compounds that can be used in a variety of application such as sensors, actuators, and molecular scale electronic devices. The ultimate goal of this work is to develop and investigate CNT composites that provide a structural functionality together with one or more other key functions. A variety of novel CNT dispersions were prepared using commercially available CNT systems such as Rice single-walled carbon nanotubes (RCNT), HiPco single-walled carbon nanotubes (HCNT), and Multi-walled carbon nanotube (MWCNT). This study explored the application of novel functional dispersing agents. Deoxyribose Nucleic Acid (DNA) a biological molecule, N- sopropylacrylamide 2-acrylamido-2-methyl-1-propanesulfonic acid (NIPPAm-AMPS) a polyelectrolyte, Didodecyldimethyl ammonium bromide (DDAB) a polymerizable compound, Poly(methoxyaniline-5-sulfonic acid) (PMAS) an inherently conducting polymer, and PVA an insulating polymer were some of the agents used to disperse the CNT. These dispersions were then evaluated in term of their stability and ability to effectively disperse the CNT. Solid-state CNT composites (mats) were then prepared by means of pressure filtration of the CNT/dispersant solutions. These mats were characterized using a variety of different techniques to determine their viability to be used as mechanical actuators or electrochemical devices. The characterization methods included cyclic voltammetry, conductivity, capacitance, atomic force microscopy, scanning electron microscopy, Young’s modulus, and actuation measurements. Abstract RCNT/conducting polymer composites were prepared by the electropolymerization of Pyrrole with a range of different dopant anions in the presence of different RCNT dispersions. In these composites, the RCNT were completely covered by the polymer, consequently the electrochemical responses of these composites were dominated by the electrochemistry of the polymers with the CNT functioning as a conductor element. Polypyrrole was also electropolymerized using functionalized multi-walled carbon nanotubes (FMWCNT) as dopant. Electropolymerization was carried out using galvanostatic and potentiostatic techniques on gold-coated Mylar and ITO-glass. It was determined that PPy/FMWCNT composites deposited on either electrode using potentiostatic deposition exhibited redox peaks. This redox behavior was not observed when the galvanostatic deposition was employed. HCNT/Polyaniline (PAn) composites were prepared by either casting a film from a solution of HCNT and PAn in 1,2-Dichlorobenzene, or by casting a film of PAn onto an existing HCNT mat. The latter exhibited the highest conductivity. The actuation behavior of these CNT composites was investigated and it was determined that the PAn component contributes to the actuation strain while the HCNT component contributes to Young’s modulus. The combination of the HCNT (with their mechanical properties) and PAn (with its actuator behavior) offers and attractive route not only to reinforce the polymer film but also to introduce new electronic properties based on morphological modifications or electronic interactions between the two components giving a robust blend of optimum properties. These results open the door for these composites to be used in a variety of applications that require a combination of the above characteristics such as mechanically reinforced actuator devices, robotics, optical fiber switches, prosthetic devices, and anti-vibration systems. In addition, PPy with a range of dopant anions was electrodeposited galvanostatically, potentiostatically, and potentiodynamically on the surface of four different carbon electrodes, RCNT mat (unannealed), RCNT mat (annealed), glassy carbon, and carbon foil. It was found that the method of electrodeposition was crucial to the electroactivity of the deposited polymers, particularly when deposited onto a RCNT mat due to the different interaction between the deposited polymer and the RCNT mat. Finally, HCNT/SDS, HCNT/PMAS, and HCNT/DNA fibers were prepared using the Particle Coagulating Spinning method (PCS). The annealing process resulted in a dramatic increase in conductivity of up to 2600 times higher compared to the unannealed fibers. However, the annealing process did not play any role in keeping the fibers together or modifying the alignment of the carbon nanotubes ropes within the fibers. The HCNT/DNA fibers, with their biocompatibility, high conductivity, and good mechanical properties can be used as artificial muscles, bioelectronic sensors, or even as platforms to support the growth of nerve cells. This thesis delineates the methods of successful production of solid sate CNT mats and fibers, utilizing traditional polymeric and more novel multi- functional dispersant materials. Thereby, providing a series of new framework for which future device structures can be fabricated.

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Xi, Binbin. "Novel conducting polymer structures for electrochemical actuators". Access electronically, 2005. http://www.library.uow.edu.au/adt-NWU/public/adt-NWU20060517.100903/index.html.

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Li, Jing. "Electrical conducting polymer nanocomposites containing graphite nanoplatelets and carbon nanotubes /". View abstract or full-text, 2006. http://library.ust.hk/cgi/db/thesis.pl?MECH%202006%20LI.

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Keng, Yenmei. "The effects of temperature and carbon nanotubes on conducting polymer actuator performance". Thesis, Massachusetts Institute of Technology, 2010. http://hdl.handle.net/1721.1/61879.

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Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2010.
Cataloged from PDF version of thesis.
Includes bibliographical references (p. 102-103).
Conducting polymers serve as electrically conductive actuators via ion diffusion in and out of the polymer when voltages are applied. Their actuation performance can be largely affected by deposition setup, post-deposition processing, type of electrolyte, applied voltage for actuation, and temperature. It was shown that increasing temperature caused higher active stress in polypyrrole, an attractive conducting polymer actuator material. However, detailed characterizations were lacking to determine whether the improved active stress was caused by structural change in the polymer and/or charging effect. A temperature-controlled solvent bath was integrated with a custom-built electrochemical dynamic mechanical analyzer to conduct isometric and isotonic tests on polypyrrole under elevated temperature. Experimental results showed that heating increased the charge transport through the polymer and thermal expansion in the polymer allowed more room for charge uptake. As a result, increase in ion movement largely contributed to improvements in actuation stress (rate) and strain (rate), while the decrease in stiffness due to heating had limited effect. Moreover, actuation performance was further improved by choosing large active ion type, BMIM. Although the active stress and strain increased via heating, creep limits the reversibility of conducting polymer actuators. To reduce creep rate, functionalized multi-walled carbon nanotubes (fCNTs) were introduced to fabricate composites with polypyrrole and with PEDOT. Out of four attempted fabrication techniques, drop-casted multilayer structure demonstrated that increasing the amount of fCNTs reduced creep rate, but also decreased active strain, stiffness, and conductivity. Applying higher preload (up to 3 MPa) improved active strain in the composites by providing more space for charge uptake. The amount of sCNTs that provided optimal performance was approximately 20-30% by weight.
by Yenmei (Kerri) Keng.
S.M.

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Oh, Jungmin. "Preparation and application of conducting polymer-carbon nanotube composite". [Johnson City, Tenn. : East Tennessee State University], 2004. https://dc.etsu.edu/etd/960.

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Thesis (M.S.)--East Tennessee State University, 2004.
Title from electronic submission form. ETSU ETD database URN: etd-1110104-211520 Includes bibliographical references. Also available via Internet at the UMI web site.

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Chiguma, Jasper. "Conducting polymer nanocomposites loaded with nanotubes and fibers for electrical and thermal applications". Diss., Online access via UMI:, 2009.

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Wasem, Klein Felipe. "Photoactive polymer – carbon nanotubes hybrid nanostructures". Thesis, Strasbourg, 2021. http://www.theses.fr/2021STRAE004.

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L’objectif de cette thèse est la préparation de matériaux hybrides polymères conjugués (P3HT et un copolymère dérivé) - nanotubes de carbone, ainsi que leur caractérisation par des méthodes spectroscopiques et par microscopie électronique. Des nanohybrides non-covalents sont obtenus par la sonication des deux composants dans le THF. L’interaction entre ces composants entraîne l’enroulement du polymère autour des nanotubes ainsi que la formation d'agrégats de polymère sur leur surface. L’effet de différents paramètres, tels que la masse molaire du polymère, ont été étudiés. Des nanohybrides covalents sont obtenus en utilisant un copolymère portant une aniline au bout de la chaîne alkyle. Les spectroscopies optique et Raman suggèrent un faible taux de fonctionnalisation ainsi qu’une conformation plus désordonnée des chaînes de polymères par rapport aux nanohybrides non-covalents. Des études préliminaires montrent que le copolymère peut fonctionnaliser aussi des dispositifs à base de nanotubes de carbone. Le bas taux de fonctionnalisation ne permet pas de conclure sur la modification des propriétés électroniques, mais les défauts induits permettent l’observation d’un photocourant
The objective of this thesis is the preparation of conjugated polymers (P3HT and a derivated copolymer) – carbon nanotubes hybrid materials and their characterization through different spectroscopies and transmission electron microscopy. Non-covalent nanohybrids can be obtained by sonicating both components together in THF. The interaction between both components leads to the wrapping of the polymer around the carbon nanotubes as well as the formation of polymer aggregates on the surface of the nanotubes. The effect of different parameters such as the polymer chain length are described. Covalent nanohybrids can be obtained using a specially designed copolymer bearing an aniline at the end of its side chain. Optical and Raman spectroscopies indicate a low level of functionalization, and suggest that the polymer chains are in a more disordered state compared to non-covalent nanohybrids. Preliminary studies show that the obtained copolymer can be used for functionalizing carbon nanotube based devices. Modification of electrical properties of the devices were small and compatible with the low functionalization degree, but the induced defects allow observation of a photocurrent

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Islam, Md Mazharul. "Printed transparent conducting electrodes based on carbon nanotubes (CNTs), reduced graphene oxide (rGO), and a polymer matrix". Thesis, Umeå universitet, Institutionen för fysik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-156366.

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The main focus of this project was to prepare transparent and conductive electrodes (TCEs). TCEs were made out of multi-walled carbon nanotubes (MWCNTs), reduced graphene oxide (rGO), and polyvinylpyrrolidone (PVP). Based on the theoretical aspect, MWCNTs has emerged as a promising nanofiller in the polymer matrix due to its high electrical conductivity. As a nanofiller, MWCNTs were used with a small ratio of rGO with PVP as a polymer matrix in this project to prepare TCEs having low sheet resistance with high transparency. An appropriate amount of PVP has been shown to be a good combination with MWCNTs and rGO in the solvent to keep MWCNTs dispersed for a long time. Carboxyl group (-COOH) functionalized MWCNTs (FMWCNTs) was produced in a controlled oxidative procedure due to enabling good dispersion of FMWCNTs in water and ethanol solvents. In contrast, water dispersible rGO was chemically prepared by using GO and sodium borohydride where GO was produced from graphite by using improved Hummer's method. Drop casting and spray coating methods were applied to fabricate TCEswhere only water was used as the solvent for drop casted TCEs and a mixing ratio of water and ethanol was 70:30 as solvent for spray coated TCEs. It was also determined in this project that the spray coating method was more suitable for preparing TCEs rather than thedrop casting method due to easy fabrication, large area coating possibility, and the smoothness of the coated film surface. The sheet resistance was obtained as 5026 Ω/ ⃣ where the transparency was 65% in the case of the drop casted electrode for the ratio of rGO:FMWCNTs:PVP was 1.2:60:1 with 0.02 mg FMWCNTs. In the case of spray coated electrode at the same ratio of rGO:FMWCNTs:PVP, the sheet resistance was measured as 5961 Ω/ ⃣ where the transparency was 73%. But in the case of 60:1 mass ratio of FMWCNTs:PVP with 0.02 mg FMWCNTs, the sheet resistance was 7729 Ω/ ⃣ and transparency was 77% for spray coated electrode. So, it is clear that the sheet resistance was improved by adding a small mass ratio of rGO with FMWCNTs:PVP.

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Vignal, Thomas. "Développement d’électrodes utilisant un PCE déposé sur VACNT/Al selon un procédé continu et leur utilisation dans des pseudosupercondensateurs". Thesis, Cergy-Pontoise, 2019. http://www.theses.fr/2019CERG1044.

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Les travaux réalisés ont porté sur l’élaboration d’électrodes composites à base de polymère conducteur électronique déposé électrochimiquement sur des tapis de nanotubes de carbone verticalement alignés sur substrat d’aluminium (VACNT/Al). Ces nouveaux tapis VACNT/Al ont une densité de nanotube très élevée (10^11 - 10^12 CNT/cm²) et proposent une architecture nanométrique très intéressante pour l’élaboration d’électrode dans des dispositifs de stockage d’énergie de type supercondensateur. Le dépôt de polymère sur ces électrodes permet d’augmenter l’énergie spécifique des supercondensateurs. De plus, ces travaux ont aussi été dédiés à l’élaboration d’un procédé de dépôt en continu en vue d’une montée en échelle des synthèses du composite. Dans une première partie, les matériaux utilisés dans les électrodes composites ont été caractérisés individuellement. Ainsi, des dépôts en milieu liquide ionique des polymères poly(3-méthylthiophène) (P3MT) et polypyrrole (PPy) à la surface d’électrodes planes ont été réalisés et, des tapis VACNT ont été caractérisés. La deuxième partie de ce travail a été consacrée à l’optimisation de la synthèse électrochimique par une méthode chronoampérométrique pulsée en milieu liquide ionique.de nanocomposites P3MT/VACNT/Al avec des proportions massiques de P3MT dans l’électrode variant de 10 à 90 %. Ces composites ont par la suite été utilisés en tant qu’électrodes dans des supercondensateurs symétrique et asymétrique sous forme de pile-bouton permettant des énergies et puissances spécifiques de 52 Wh/kg et 12 kW/kg, respectivement. Dans la troisième partie, un procédé de dépôts du P3MT sur un tapis en mouvement a été mis au point pour étudier l’élaboration en continu d’électrodes composites et permettre la préparation d’électrodes de plus grande dimension, 80 cm² dans cette étude. Ces composites ont montré des capacitances spécifiques équivalentes aux composites obtenus avec des dépôts statiques. De plus, les bandes de 80 cm2 ont été utilisées pour la réalisation de supercondensateurs de type zig-zag symétrique et asymétrique et ont aussi montré des énergies et puissance spécifiques très similaire à celles des piles bouton. Dans une dernière partie, un transfert de méthode a été réalisé pour la synthèse de composite PPy/VACNT, en statique puis en procédé continu
The work carried out focused on the development of composite electrodes by electrochemically deposition of conductive polymer onto carbon nanotube vertically aligned on aluminum substrate (VACNT/Al). These new VACNT / Al have a very high nanotube density (10^11 - 10^12 CNT/cm²) and offer a very interesting nanometric architecture for the elaboration of electrodes in energy storage devices as supercapacitor. The deposition of polymer on these electrodes allows the increase of the supercapacitors’ specific energies. In addition, this work has also been dedicated to the development of a continuous deposition process for scaling syntheses of the composite. In a first part, the materials used in the composite electrodes have been characterized individually. Thus, ionic liquid medium deposits of poly (3-methylthiophene) (P3MT) and polypyrrole (PPy) polymers at the surface of planar electrodes were made and VACNT were characterized. The second part of this work was devoted to the optimization of electrochemical synthesis by a pulsed chronoamperometric method in ionic liquid medium. P3MT/VACNT/Al nanocomposites with mass proportions of P3MT in the electrode ranging from 10 to 90%. These composites have subsequently been used as electrodes in symmetric and asymmetric supercapacitors in coin-cell devices allowing specifics energies and powers of 52 Wh/kg and 12 kW/kg, respectively. In the third part, a P3MT deposition process onto moving VACNT was developed to study the continuous elaboration of composite electrodes and to allow the preparation of larger electrodes, 80 cm² in this study. These composites showed specific capacitances equivalent to the composites obtained with static deposits. In addition, the 80 cm2 strips were used for the realization of symmetric and asymmetric zig-zag supercapacitors and also showed specific energies and power very similar to those of coin-cells. In a last part, a transfer of method was realized for the synthesis of composite PPy / VACNT, in static then continuous process

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Lay, Makara. "Conductive nanopaper from cellulose nanofibers and conductive polymers and/or carbon nanotubes". Doctoral thesis, Universitat de Girona, 2017. http://hdl.handle.net/10803/401711.

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Coming from renewable and sustainable raw materials, nanocelluloses are rapidly emerging as one of the most promising future materials. Recently, the use of nanocellulose nanocomposites in flexible electrodes, biosensors or supercapacitors it is been studied. The main objective of this thesis is to produce conductive nanopapers from cellulose nanofibers (CNF) or bacterial cellulose (BC) and tree different conductive materials: polypyrrole (PPy), poly(3,4-ethylenedioxythiophene : polystyrene sulfonate (PEDOT:PSS) and multi-walled carbon nanotubes (MWCNT). The structure and morphology of nanocomposites were studied, as well as their thermal, mechanical, and electrical conductivity properties. The results revealed the semiconductor or conductor character of the obtained nanocomposites, with specific capacitances up to 300 F g-1 for CNF-PPy and CNF-PEDOT:PSS-PPy nanocomposites. This work demonstrates the feasibility of using cellulose nanofibers in the field of green and flexible electronics, biosensors, and energy storage devices
Les nanofibres de cel·lulosa són un dels materials del futur, gràcies al seu origen natural i renovable, i per les seves propietats físico-químiques, i mecàniques. Recentment, s’està estudiant el seu ús en elèctrodes flexibles, biosensors o supercapacitants. L’objectiu central de la tesis és produir nanopapers conductors a partir de nanofibres de cel·lulosa (CNF) o de cel·lulosa bacteriana (BC), i tres tipus de càrrega conductora, el polipirrol (PPy), el poli(3-4-etilendioxitiofè):poliestirè sulfonat (POEDOT:PSS) i els nanotubs de carboni de paret múltiple (MWCNT). S’ha avaluat l’estructura i morfologia dels materials nanocompòsits, així com les seves propietats tèrmiques, mecàniques i elèctriques. Els resultats mostren el caràcter semiconductor o conductor dels nanocompòsits obtinguts, amb capacitàncies específiques de més de 300 F·g-1 per als nanocompòsits de CNF-PPy i CNF-PEDOT:PSS-PPy. Es demostra la viabilitat de l’ús de nanofibres de cel·lulosa per la fabricació de productes electrònics flexibles, biosensors, o com a dispositius d’emmagatzematge d’energia

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Książki na temat "Conducting Polymer Nanotubes"

Roth, S. One-dimensional metals: Conjugated polymers, organic crystals, carbon nanotubes. Wyd. 2. Weinheim: Wiley-VCH, 2004.

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Chandrasekhar, Prasanna. Conducting polymers, fundamentals and applications: A practical approach. Boston: Kluwer Academic, 1999.

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Chandrasekhar, Prasanna. Conducting polymers, fundamentals and applications: A practical approach. Boston: Kluwer Academic, 1999.

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Carroll, David, i Siegmar Roth. One-Dimensional Metals: Conjugated Polymers, Organic Crystals, Carbon Nanotubes. Wiley & Sons, Incorporated, John, 2006.

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Carroll, David, i Siegmar Roth. One-Dimensional Metals: Conjugated Polymers, Organic Crystals, Carbon Nanotubes. Wiley & Sons, Limited, John, 2005.

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Chandrasekhar, Prasanna. Conducting Polymers, Fundamentals and Applications: Including Carbon Nanotubes and Graphene. Springer, 2018.

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Chandrasekhar, Prasanna. Conducting Polymers, Fundamentals and Applications: Including Carbon Nanotubes and Graphene. Springer, 2019.

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Carroll, David, i Siegmar Roth. One-Dimensional Metals: Conjugated Polymers, Organic Crystals, Carbon Nanotubes and Graphene. Wiley & Sons, Incorporated, John, 2015.

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Chandrasekhar, Prasanna. Conducting Polymers, Fundamentals and Applications: A Practical Approach. Springer London, Limited, 2013.

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Chandrasekhar, Prasanna. Conducting Polymers, Fundamentals and Applications: A Practical Approach. Springer, 1999.

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Części książek na temat "Conducting Polymer Nanotubes"

Rawat, Neha Kanwar, P. K. Panda i Anujit Ghosal. "Conducting Polymer/CNT-Based Nanocomposites As Smart Emerging Materials". W Carbon Nanotubes and Nanoparticles, 107–26. Toronto; New Jersey : Apple Academic Press, 2019.: Apple Academic Press, 2019. http://dx.doi.org/10.1201/9780429463877-6.

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Iqbal, Sajid, Rangnath Ravi, Anujit Ghosal, Jaydeep Bhattacharya i Sharif Ahmad. "Advances in Carbon Nanotube-Based Conducting Polymer Composites". W Engineered Carbon Nanotubes and Nanofibrous Materials, 127–41. Toronto ; New Jersey : Apple Academic Press, 2019. | Series: AAP research notes on nanoscience and nanotechnology: Apple Academic Press, 2018. http://dx.doi.org/10.1201/9781351048125-6.

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Singh, Paramjit. "Composites Based on Conducting Polymers and Carbon Nanotubes for Supercapacitors". W Springer Series on Polymer and Composite Materials, 305–36. Cham: Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-46458-9_10.

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Chandrasekhar, Prasanna. "Introducing Carbon Nanotubes (CNTs)". W Conducting Polymers, Fundamentals and Applications, 3–10. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-69378-1_1.

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Baibarac, M., I. Baltog i S. Lefrant. "Composites Based on Conducting Polymers and Carbon Nanotubes". W Nanostructured Conductive Polymers, 209–60. Chichester, UK: John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470661338.ch5.

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Hwang, Sang-ha, Jeong-Min Seo, In-Yup Jeon, Young-Bin Park* i Jong-Beom Baek*. "Chapter 1. Conducting Polymer-based Carbon Nanotube Composites: Preparation and Applications". W Carbon Nanotube-Polymer Composites, 1–21. Cambridge: Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849736817-00001.

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Anderson, Ankoma, Fushen Lu*, Mohammed J. Meziani* i Ya-Ping Sun*. "Chapter 6. Metallic Single-walled Carbon Nanotubes for Electrically Conductive Materials and Devices". W Carbon Nanotube-Polymer Composites, 182–211. Cambridge: Royal Society of Chemistry, 2013. http://dx.doi.org/10.1039/9781849736817-00182.

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Zhao, Hang, Delong He i Jinbo Bai. "Chapter 4. Graphite Nanoplatelet–Carbon Nanotube Hybrids for Electrical Conducting Polymer Composites". W Two-dimensional Inorganic Nanomaterials for Conductive Polymer Nanocomposites, 129–203. Cambridge: Royal Society of Chemistry, 2021. http://dx.doi.org/10.1039/9781839162596-00129.

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Dai, Liming. "From Conducting Polymers to Carbon Nanotubes: New Horizons in Plastic Microelectronics and Carbon Nanoelectronics". W Perspectives of Fullerene Nanotechnology, 93–111. Dordrecht: Springer Netherlands, 2002. http://dx.doi.org/10.1007/978-94-010-9598-3_9.

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Bok Lee, Sang, i Seung Cho. "Conducting Polymer Nanotubes". W Dekker Encyclopedia of Nanoscience and Nanotechnology, Second Edition - Six Volume Set (Print Version). CRC Press, 2004. http://dx.doi.org/10.1201/9781439834398.ch342.

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Streszczenia konferencji na temat "Conducting Polymer Nanotubes"

Khorrami, Milad, i Mohammad Reza Abidian. "Aligned Conducting Polymer Nanotubes for Neural Prostheses". W 2018 40th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC). IEEE, 2018. http://dx.doi.org/10.1109/embc.2018.8513649.

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Tai-Jin Kim, Si-Dong Kim, Nam-Ki Min, James Jungho Pak, Cheol-Jin Lee i Soo-Won Kim. "NH3 sensitive chemiresistor sensors using plasma functionalized multiwall carbon nanotubes/conducting polymer composites". W 2008 IEEE Sensors. IEEE, 2008. http://dx.doi.org/10.1109/icsens.2008.4716419.

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Wei-Chao Chen, Hsiang-Ting Lien, Tzu-Wei Cheng, Kuei-Hsien Chen i Li-Chyong Chen. "Polymer-assisted dispersion of single-wall carbon nanotubes for transparent conducting film fabrication". W 8th International Vacuum Electron Sources Conference and Nanocarbon (2010 IVESC). IEEE, 2010. http://dx.doi.org/10.1109/ivesc.2010.5644274.

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Kim, Jaehwan, Zoubeida Ounaies, Sung-Ryul Yun, Yukeun Kang i Seung-Hun Bae. "Electroactive Paper Materials Coated With Carbon Nanotubes and Conducting Polymers". W ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-79579.

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Electro-Active Paper (EAPap) materials based on cellulose are attractive for many applications because of their low voltage operation, lightweight, dryness, low power consumption, bio-degradable. The construction of EAPap actuator has been achieved using the cellulose paper film coated with thin electrode layers. This actuator showed a reversible and reproducible bending movement. In order to improve both force and displacement of this, EAPap actuator efforts are made to construct the device using increasing number of complementary conducting polymer layers and carbon nanotubes. A hybrid EAPap actuator is developed using single-wall carbon nanotubes (CNT)/Polyaniline (PANi) electrodes, as a replacement to gold electrodes. It is expected that the use of CNT can enhance the stiffness of the tri-layered actuator, thus improving the force output. Furthermore, the presence of the CNT may increase the actuation performance of the EAPap material. CNT is dispersed in NMP(1-Methyl-2-pyrrolidine), and the resulting solution is used as a solvent for PANi. The CNT/PANi/NMP solution is then cast on the EAPap by spin coating. The coated EAPap is dried in an oven. The effect of processing parameters on the final performance of the CNT/PANi electrodes is assessed. The final performance of the electrodes is quantified in terms of the electrical conductivity under dc and ac measurement conditions. The actuation output of the CNT/PANi/EAPap samples is tested in an environmental chamber in terms of free displacement and blocked force. The performance of the hybrid actuators is also investigated in terms of frequency, voltage, humidity and temperature to help shed light on the mechanism responsible for actuation. Comparison of these results in that of the EAPap with PANi and gold electrodes are also accomplished. EAPap materials are bio-degradable that is important property for artificial muscle actuators for biomimetic with controlled properties and shape.

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Datta, Kunal, Arti Rushi, Prasanta Ghosh i Mahendra Shirsat. "Comparative VOCs sensing performance for conducting polymer and porphyrin functionalized carbon nanotubes based sensors". W 2ND INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2017). Author(s), 2018. http://dx.doi.org/10.1063/1.5032333.

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Castagna, R., C. Sciascia, A. R. Srimath Kandada, M. Meneghetti, G. Lanzani i C. Bertarelli. "Light-triggered conducting properties of a random carbon nanotubes network in a photochromic polymer matrix". W SPIE NanoScience + Engineering, redaktorzy Didier Pribat, Young-Hee Lee i Manijeh Razeghi. SPIE, 2011. http://dx.doi.org/10.1117/12.893958.

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Soldano, Caterina, Swastik Kar, Yung Joon Jung i Pulikel M. Ajayan. "Electro-Mechanically Robust, Flexible Carbon Nanotube-PDMS Composite for High Performance Field Emission". W ASME 2006 Multifunctional Nanocomposites International Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/mn2006-17034.

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We present a method for fabricating flexible multi-wall carbon nanotubes (MWNTs)-polymer (poly-dimethylsiloxane, PDMS) composites for high performance field emission devices and other flexible electronic applications. The polymer matrix isolates individual nanotubes on its surface, reducing mutual [1] and give rise to impressive field emission properties. The MWNT-PDMS composites are extremely flexible and electro-mechanically robust since they remain electrically conducting under large strains. The above mentioned features make these MWNT-PDMS composites suitable for future applications as multifunctional flexible devices such as pressure and gas sensors as well as flexible sensors and display devices.

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Bougher, Thomas L., Virendra Singh i Baratunde A. Cola. "Thermal Interface Materials From Vertically Aligned Polymer Nanotube Arrays". W ASME 2013 4th International Conference on Micro/Nanoscale Heat and Mass Transfer. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/mnhmt2013-22226.

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A number of studies have reported enhancing the thermal conductivity of semi-crystalline polymers through mechanical stretching, but practical application of this process has proven difficult. Here we demonstrate the application of enhanced thermal conductivity in a purely amorphous polymer for a thermal interface material (TIM) without conductive fillers. Many polymer-based TIMs contain carbon fillers to enhance the thermal conductivity, however the TIMs reported herein are comprised solely of polymer nanotubes. The conjugated polymer polythiophene (Pth) is electropolymerized in nanotemplates to produce arrays of vertically aligned nanotubes, which adhere well to opposing substrates through van der Waals forces. We find that the total thermal resistances of the Pth-TIMs are a strong function of height with some dependence on bonding pressure, yet independent of applied pressure after bonding. Photoacoustic measurements show that the total thermal resistance of the TIMs ranges from 9.8 ± 3.8 to 155 ± 32 mm2-K/W depending on the array height and bonding pressure. Estimates of the component resistances indicate that the majority of the resistance is in the contact between the nanotube free tips and the opposing quartz substrate. These Pth-TIMs demonstrate that enhanced thermal conductivity polymers can be suitable for heat transfer materials without thermally conductive fillers.

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Pham, Giang T., Young-Bin Park i Ben Wang. "Development of Carbon-Nanotube-Based Nanocomposite Strain Sensor". W ASME 2005 International Mechanical Engineering Congress and Exposition. ASMEDC, 2005. http://dx.doi.org/10.1115/imece2005-82309.

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This paper presents the development of carbon-nanotube-based, polymer composite films that can be used as high-sensitivity strain sensors. The films were fabricated via either melt processing or solution casting of thermoplastic polymer matrices containing low concentrations of multi-walled carbon nanotubes. The electrical resistivities of the films were measured in situ using laboratory-designed fixtures and data acquisition system. The measured resistivities were correlated with the applied strains to evaluate the sensitivity of the nanocomposite film sensor. Various types of loading mode, including tension and flexure were considered. The paper suggests that conductive network formation, thus strain sensitivity of the conductive films, can be tailored by controlling nanotube loading, degree of nanotube dispersion, and film fabrication process. The developed sensors exhibited a wide range of sensitivity, the upper limit showing nearly an order of magnitude increase compared to conventional strain gages. Military and industrial applications of the sensitivity-tunable strain sensors are presented.

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Lee, S. W., D. Katz, H. Grebel, D. Lopez i A. Kornblit. "Carbon Nanotube/Conducting Polymer Addressable Interconnects". W CLEO 2007. IEEE, 2007. http://dx.doi.org/10.1109/cleo.2007.4452712.

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Raporty organizacyjne na temat "Conducting Polymer Nanotubes"

Yang, Arnold C. Dispersion and Reinforcement of Nanotubes in High Temperature Polymers for Ultrahigh Strength and Thermally Conductive Nanocomposites. Fort Belvoir, VA: Defense Technical Information Center, październik 2007. http://dx.doi.org/10.21236/ada472590.

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