Bibliographies thématiques / HOMO POLYMER

Littérature scientifique sur le sujet « HOMO POLYMER »

Auteur : Grafiati
Publié le 11 septembre 2023

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Articles de revues sur le sujet "HOMO POLYMER"

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Orlova, M., S. Didenko, D. Saranin, O. Rabinovich, A. Panichkin et I. Borzykh. « New Polymer Systems for Use in Organic Photovoltaics ». International Journal of Nanoscience 17, no 05 (octobre 2018) : 1750022. http://dx.doi.org/10.1142/s0219581x17500223.

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In this paper, new polymers for use in organic photovoltaics were investigated. PPBI, PNBI and copolymer MULT are considered as a potential alternative or an effective dopant for P3HT and PCBM. The choice of these materials allows us to find out new information on the prospects and properties of heterocyclic polymers — for thermal stability and resistance to the environment for organic solar cells. The levels of HOMO and LUMO of new heterocyclic polymers were measured, and the results were compared with those of P3HT: PCBM. The level of new polymer MULT photoluminescence was determined. The absorption blend for P3HT: PCBM peak absorption shift was detected by adding 5% (by mass) of the new polymer MULT, the value of 30–40[Formula: see text]nm to longer wavelengths. Data obtained by cyclic voltammetry showed deep HOMO levels of heterocyclic polymers in values of about [Formula: see text]6[Formula: see text]eV, which is promising in terms of acceptor properties.
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Wu, Haimei, Baofeng Zhao, Weiping Wang, Zhaoqi Guo, Wei Wei, Zhongwei An, Chao Gao et al. « Side chain modification : an effective approach to modulate the energy level of benzodithiophene based polymers for high-performance solar cells ». Journal of Materials Chemistry A 3, no 35 (2015) : 18115–26. http://dx.doi.org/10.1039/c5ta05096k.

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Over the past few years, it has been proven that deepening the highest occupied molecular orbital (HOMO) levels of conjugated polymers is one of the most successful strategies to develop novel materials for high performance bulk heterojunction polymer solar cells.
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Viswanathan, Vinila N., Arun D. Rao, Upendra K. Pandey, Arul Varman Kesavan et Praveen C. Ramamurthy. « Molecular-level architectural design using benzothiadiazole-based polymers for photovoltaic applications ». Beilstein Journal of Organic Chemistry 13 (10 mai 2017) : 863–73. http://dx.doi.org/10.3762/bjoc.13.87.

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A series of low band gap, planar conjugated polymers, P1 (PFDTBT), P2 (PFDTDFBT) and P3 (PFDTTBT), based on fluorene and benzothiadiazole, was synthesized. The effect of fluorine substitution and fused aromatic spacers on the optoelectronic and photovoltaic performance was studied. The polymer, derived from dithienylated benzothiodiazole and fluorene, P1, exhibited a highest occupied molecular orbital (HOMO) energy level at −5.48 eV. Density functional theory (DFT) studies as well as experimental measurements suggested that upon substitution of the acceptor with fluorine, both the HOMO and lowest unoccupied molecular orbital (LUMO) energy levels of the resulting polymer, P2, were lowered, leading to a higher open circuit voltage and short circuit current with an overall improvement of more than 110% for the photovoltaic devices. Moreover, a decrease in the torsion angle between the units was also observed for the fluorinated polymer P2 due to the enhanced electrostatic interaction between the fluorine substituents and sulfur atoms, leading to a high hole mobility. The use of a fused π-bridge in polymer P3 for the enhancement of the planarity as compared to the P1 backbone was also studied. This enhanced planarity led to the highest observed mobility among the reported three polymers as well as to an improvement in the device efficiency by more than 40% for P3.
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Tsai, Huai-Wen, Kan-Lin Hsueh, Mei-Hsin Chen et Che-Wun Hong. « Electronic and Optical Properties of Polythiophene Molecules and Derivatives ». Crystals 11, no 11 (25 octobre 2021) : 1292. http://dx.doi.org/10.3390/cryst11111292.

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The electronic and optical properties of polythiophene (PT) for polymer light-emitting diodes (PLEDs) were calculated using density functional theory (DFT) and time-dependent DFT. We calculated the electronic and optical properties of thiophene and PT polymers with degrees of polymerization (DP) from 2 to 30 monomers (T1–T30) and their derivatives. The associated highest occupied molecular orbital (HOMO) energy, lowest unoccupied molecular orbital (LUMO) energy, band gaps, electron orbitals, and molecular structures were determined. As the DP increased, the LUMO energy gradually decreased, and the HOMO energy gradually increased. The band gap of PT approached 2 eV as the DP of the PT polymer increased from 1 to 30. The calculations and exchange–correlation functional were verified against values in the literature and experimental data from cyclic voltammetry (redox potential) and ultraviolet-visible, photoluminescence, and ultraviolet photoelectron spectra. The color of PT PLEDs can be adjusted by controlling the DP of the polymer and the substituents.
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Bilby, David, Bong Gi Kim et Jinsang Kim. « Recent design strategies for polymer solar cell materials ». Pure and Applied Chemistry 83, no 1 (10 novembre 2010) : 127–39. http://dx.doi.org/10.1351/pac-con-10-08-23.

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Recent design tools for tuning the properties of conjugated polymers for efficient polymer solar cells (PSCs) are briefly reviewed. Based on limitations in the solar-to-electric energy conversion process imposed by material properties, recent research has focused on lowering the highest occupied molecular orbital (HOMO) level, reducing the bandgap, and controlling the molecular conformation and donor–acceptor phase separation. Additionally, the stability of PSCs can be improved through molecular design. Finally, a few less-conventional material design strategies for device improvement through polymer–polymer blends and triplet utilization are introduced. Molecular design has been an invaluable tool in controlling these material properties.
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Kato, Noriyuki, Shinya Ikeda, Manabu Hirakawa et Hiroshi Ito. « Correlation of the Abbe Number, the Refractive Index, and Glass Transition Temperature to the Degree of Polymerization of Norbornane in Polycarbonate Polymers ». Polymers 12, no 11 (26 octobre 2020) : 2484. http://dx.doi.org/10.3390/polym12112484.

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The influences of the average degree of polymerization (Dp), which is derived from Mn and terminal end group, on optical and thermal properties of various refractive indexed transparent polymers were investigated. In this study, we selected the alicyclic compound, Dinorbornane dimethanol (DNDM) homo polymer, because it has been used as a representative monomer in low refractive index polymers for its unique properties. DNDM monomer has a stable amorphous phase and reacts like a polymer. Its unique reaction allows continuous investigation from monomer to polymer. For hydroxy end group and phenolic end group polymers, the refractive index (nd) decreased with increasing Dp, and both converged to same value in the high Dp region. However, the Abbe number (νd) of a hydroxy end group polymer is not dependent on Dp, and the νd of a phenolic end group polymer is greatly dependent on Dp. As for glass transition temperatures (Tg), both end group series were increased as Dp increased, and both converged to the same value.
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Akhmetkhanov, Rinat M., Valentina V. Chernova, Angela S. Shurshina, Mariya Yu Lazdina et Elena I. Kulish. « Study of the formation of structures in solutions of chitosan – polyvinyl alcohol polymer blends ». Kondensirovannye sredy i mezhfaznye granitsy = Condensed Matter and Interphases 23, no 2 (4 juin 2021) : 188–95. http://dx.doi.org/10.17308/kcmf.2021.23/3428.

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The aim of this work was the investigation of the formation of structures in solutions of individual polymers, as well as their blends with each other in buffer solvents with different values of pH. In this study we used a sample of chitosan (degree of deacetylation ~ 84 %, M = 130,000), which is a polycation when dissolved, and polyvinyl alcohol (r = 1.25 g/cm3, M = 5000). Buffer systems based on acetic acid and sodium acetate with pH = 3.8, 4.25, and 4.75 were used as solvents. Viscosimetry was used to determine the intrinsic viscosity, the degree of structuring, and the Huggins constant. The Kriegbaum method was used to determine the nature of the aggregates formed by the blend of the studied polymers. In the course of the research, it was shown that an increase in the pH of the acetate buffer used as a solvent was accompanied by a compression of the macromolecular coil (a decrease in intrinsic viscosity values), a deterioration in the quality of thesolvent (an increase in Huggins constant values), and an increase in the degree of polymer aggregation in a solution for chitosan polyelectrolyte. At the same time for a solution of polyvinyl alcohol the pH of the buffer practically did not affect the nature of the polymer-solvent interaction. It has been proved that polymer blends are characterized by an increase in aggregation processes and a decrease in the thermodynamic quality of the solvent in comparison with solutions of individual polymers. The size of the “combined” macromolecular coil, characterized by the intrinsic viscosity value for the polymer blend, which can be both above (buffer solvent with pH = 3.80) and below (buffer solvent with pH = 4.25 and 4.75) additivevalues, changed depending on the type of formed polymer-polymer aggregates (homo- or hetero-). It was established that the type of aggregates (homo- or hetero-) formed in solutions of polymer blends was determined not only by the thermodynamic quality of the used solvents, but also by the concentration of the polymers in the initial solutions
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Zhang, Zijian, Zicheng Ding, Chuandong Dou, Jun Liu et Lixiang Wang. « Development of a donor polymer using a B ← N unit for suitable LUMO/HOMO energy levels and improved photovoltaic performance ». Polymer Chemistry 6, no 46 (2015) : 8029–35. http://dx.doi.org/10.1039/c5py01389e.

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We report a novel approach to tune the LUMO/HOMO energy levels of polymer donors by replacing a C–C unit with a B ← N unit. The polymer containing a B ← N unit exhibits lower LUMO/HOMO levels and a narrower bandgap, leading to an improved photovoltaic performance.
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He, Baitian, Yulin Chen, Jinglong Chen, Songxi Chen, Manjun Xiao, Guiting Chen et Chuanbo Dai. « Wide-bandgap donor polymers based on a dicyanodivinyl indacenodithiophene unit for non-fullerene polymer solar cells ». RSC Advances 11, no 35 (2021) : 21397–404. http://dx.doi.org/10.1039/d1ra03233j.

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Ahmed, Sahnawaz, Nilotpal Singha, Bapan Pramanik, Julfikar Hassan Mondal et Debapratim Das. « Redox controlled reversible transformation of a supramolecular alternating copolymer to a radical cation containing homo-polymer ». Polymer Chemistry 7, no 26 (2016) : 4393–401. http://dx.doi.org/10.1039/c6py00809g.

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Thèses sur le sujet "HOMO POLYMER"

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Beyers, Cornelis Petrus. « The effect of iodo alkyl chain transfer agents on the seeded emulsion homo- and co-polimerisation of styrene and butyl acrylate ». Thesis, Stellenbosch : Stellenbosch University, 1999. http://hdl.handle.net/10019.1/51467.

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Thesis (MSc) -- Stellenbosch University, 1999.
ENGLISH ABSTRACT: A free-radical polymerisation process, which has characteristics of a living polymerisation system, as it is capable of producing polymers of pre-determined molecular masses with a narrow molecular mass distribution, is discussed. It is also possible to make blockcopolymers by adding adding different monomers. The basic objective was to describe, discuss and explain the results of the effects of alkyl iodides as chain transfer agents on the seeded emulsion homo- and co-polymerisation of styrene and butyl acrylate. lodoacetonitrile and 1-phenylethyliodide were used as alkyliodides, acting as degenerative chain transfer agents. First, the effects of these alkyl iodides as chain transfer agents on the molecular mass, molecular mass distribution, glass transition temperature, conversion and particle size for the seeded emulsion polymerisation of styrene were studied. Second, the effects of alkyl iodides as chain transfer agents on the kinetics of radical emulsion polymerisation, especially the average amount of radicals per latex particle, were investigated. Third, the possibility of producing block-copolymers by emulsion polymerisation, using alkyl iodides as chain transfer agents, was investigated. To the best of the author's knowledge, results of work carried out in this study offer the first proof that the "living"/controlled radical polymerisation of styrene, with alkyl iodides as chain transfer agents, can be successfully carried out in emulsion. Addition of different alkyl iodides as chain transfer agents, in different concentrations, led to marked changes in the molecular mass, molecular mass distribution, glass transition temperature, conversion and particle size for the seeded emulsion polymerisation of styrene. The molecular masses of the polystyrene that was produced ranged from 156 to 663 577 while the average molecular mass distribution was below 2. Addition of these alkyl iodides to a seeded styrene polymerisation under zero-one conditions led to an average number of free radicals per latex particle that was greater than 1. A styrene seed latex with functional iodine end-groups was created and was successfully co-polymerised with butyl acrylate to produce a perfect styrene-butyl acrylate block-copolymer. This work has industrial importance as it allows the molecular mass, molecular mass distribution and particle size of polymers to be controlled. These factors are directly related to their micro- and macrostructure of polymers.
AFRIKAANSE OPSOMMING: Die vrye-radikaal polimerisasie proses wat die eienskappe van In lewendige polimerisasie sisteem toon, omdat dit moontlik is om 'n polimeer met voorafbepaalde molekulêre massas en 'n baie klein molekulêre massa verspreiding te berei, is bespreek. Dit is ook moontlik om, deur die byvoeging van 'n tweede monomeer, 'n blok ko-polimere te maak. Die doel was om die effekte wat alkieljodiede as ketlingoordragagente op die "seed" homo- en ko-polimerisasie van stireen en butiel akrielaat gehad het te beskryf en te verklaar. Jodoasetonitriel en 1-fenieletieljodied is gebruik as degeneratiewe kettingoordragagente. Eerstens is die uitwerking van hierdie alkieljodiede as kettingoordragagente op die molekulere massa, molekulere massa verspreiding, glas oorgang temperatuur, opbrengs en partikelgrote van die "seed" emulsie polimerisasie van stireen bestudeer. Tweedens is na die uitwerking van alkiekjodiede op die kinetika van In emulsie radikaal polimerisasie gekyk met spesifieke 1
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Bae, Jin-Young. « Aryl mesylates in nickel (0) catalyzed homo- and cross coupling reactions ». Case Western Reserve University School of Graduate Studies / OhioLINK, 1995. http://rave.ohiolink.edu/etdc/view?acc_num=case1058375395.

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Tran, Anh. « Development of and gas permeation study of homo and copolymers from the family of polyphenylene oxides ». Thesis, University of Ottawa (Canada), 2004. http://hdl.handle.net/10393/26785.

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Membrane gas separation emerged as a commercial process on a large scale during the 1980s. When compared to other gas separation processes such as cryogenics, adsorption and absorption, membrane separation competes primarily on the basis of overall economics and convenience, but not on the basis of product purity. For example, membranes have been used for offshore natural gas processing because they reduce the size and the weight of the processing units, require less maintenance and less operator supervision. In order to improve product purity, development of new membrane materials, and modification of existing membrane material for better gas separation properties, is required. This research focused on preparation and characterization of new copolymers from the family of polyphenylene oxides. This family of polymers was chosen because of the properties of its best-known representative, poly(2,6-dimethyl-1,4-phenylene oxide), which shows one of the highest rates of permeability for gases among glassy polymers, exhibits excellent film-forming properties, and is resistant to a number of chemical agents. The study was divided into two parts: (1) homopolymers and both block and random copolymers of different composition were synthesized by oxidative coupling of 2,6-diphenylphenol and 2,6-dimethylphenol; (2) the physical and gas transport properties of the polymers were determined. (Abstract shortened by UMI.)
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Lim, Shuang Fang. « Optoelectronic properties of polyfluorene homo- and co- polymers ». Thesis, University of Cambridge, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.616021.

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Wang, Guannan. « Synthesis And Characterization of Co-/Homo- Polyurethanes with Different Pendant-Functionalized Diols ». University of Akron / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=akron1460379423.

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Werner, Marco, Jens-Uwe Sommer et Vladimir A. Baulin. « Homo-polymers with balanced hydrophobicity translocate through lipid bilayers and enhance local solvent permeability ». Saechsische Landesbibliothek- Staats- und Universitaetsbibliothek Dresden, 2014. http://nbn-resolving.de/urn:nbn:de:bsz:14-qucosa-139304.

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Recent experimental studies indicate that polymeric structures with a well-adjusted balance of amphiphilic parts may translocate through self-assembled phospholipid bilayers and enhance the passive trans-membrane transport of smaller molecules. Using a coarse grained lattice Monte Carlo model with explicit solvent we investigate self-assembled lipid bilayers interacting with a linear polymer chain under variation of the hydrophobicity of the chain. Here, we focus on the relationship between the chain's hydrophobicity and its translocation behavior through the membrane as well as induced membrane perturbations. We show, that there is an adsorption transition of the polymer at the bilayer interface, where effectively the solvent phase and the tail phase of the bilayer are equally repulsive for the polymer. Close to this adsorption threshold of the polymer both the translocation probability of the polymer as well as the permeability of the membrane with respect to solvent are enhanced significantly. The frequency of polymer translocation events can be understood quantitatively assuming a simple diffusion along a one-dimensional free energy profile, which is controlled by the effective lipophilicity of the chain and the tail-packing in the bilayer's core
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich
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Werner, Marco, Jens-Uwe Sommer et Vladimir A. Baulin. « Homo-polymers with balanced hydrophobicity translocate through lipid bilayers and enhance local solvent permeability ». Royal Society of Chemistry, 2012. https://tud.qucosa.de/id/qucosa%3A27821.

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Recent experimental studies indicate that polymeric structures with a well-adjusted balance of amphiphilic parts may translocate through self-assembled phospholipid bilayers and enhance the passive trans-membrane transport of smaller molecules. Using a coarse grained lattice Monte Carlo model with explicit solvent we investigate self-assembled lipid bilayers interacting with a linear polymer chain under variation of the hydrophobicity of the chain. Here, we focus on the relationship between the chain's hydrophobicity and its translocation behavior through the membrane as well as induced membrane perturbations. We show, that there is an adsorption transition of the polymer at the bilayer interface, where effectively the solvent phase and the tail phase of the bilayer are equally repulsive for the polymer. Close to this adsorption threshold of the polymer both the translocation probability of the polymer as well as the permeability of the membrane with respect to solvent are enhanced significantly. The frequency of polymer translocation events can be understood quantitatively assuming a simple diffusion along a one-dimensional free energy profile, which is controlled by the effective lipophilicity of the chain and the tail-packing in the bilayer's core.
Dieser Beitrag ist mit Zustimmung des Rechteinhabers aufgrund einer (DFG-geförderten) Allianz- bzw. Nationallizenz frei zugänglich.
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Lotti, Luca. « Thiol-ene functionalisation of homo- and copolymers of butadiene with L-cysteine derivatives ». Doctoral thesis, Scuola Normale Superiore, 2010. http://hdl.handle.net/11384/85798.

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In the present work the functionalisation of oligomers of butadiene (liquid 1,2-polybutadiene PBL) and of oligomers of a random copolymer butadiene/styrene (SBRL) was performed by the addition of either N-acetyl-L-cysteine, N-acetyl-L-cysteine methyl ester or L-cysteine methyl ester through the thiol-ene radical reaction. Functionalisation was carried out in solution and in presence of a free radical initiator (2,2’-azobisisobutyronitrile, AIBN). The initial feed ratio polymer / cysteine derivative / initiator was varied, in order to highlight the occurrence of side reactions and to understand their possible influence on the reaction mechanism. The 1H-NMR determination of the functionalisation extent brought out that the addition degrees of thiols were always high, regardless of the initial initial thiol / double bond ratio; the complete conversion of the double bonds, however, was never reached because of side-reactions. In order to better understand the occurrence of the latters, reactions with AIBN or with other free radical generating species were performed, in absence of thiol; the purpose of these experiments was to reproduce the presence of macroradicals similar to those generated during the thiol addition, and to investigate their reactivity towards other macromolecules present in the reaction environment. The reaction products of these runs were characterised, and some conclusions were drawn regarding the different type of side reactions occurring with the two polymeric substrates (PBL or SBRL). The high functionalisation degrees often caused a drastic change in the macroscopic properties of the polymers, ranging from improved solubility in hydrophilic solvents (for instance in alkaline aqueous solutions) to a remarkable increase of the glass transition temperature. Chiral properties were carried from the functionalising agents to the modified polymers; this phenomenon was evaluated by polarimetry of polymer solutions in organic solvents, and discussed with reference to the reciprocal proximity of the L-cysteine side chains. Circular dichroism measurements were also performed in order to investigate the possible presence of secondary / tertiary structures analogously to what reported in scientific literature for similar systems. In the last part of this work, a possible use of (N-acetyl-L-cysteine)-functionalised products was evaluated; the hydrophilically-modified polymers showed the ability to act as coupling agents between hydrophobic polymeric matrices and inorganic, hydrophilic fillers in composite materials. The incorporation of the functionalised polymers (PBL and SBRL having various functionalisation degrees) in compounds for ground tyres was performed, and the rheological / mechanical properties of the resulting compounds were evaluated; the formulation used are highly innovative compounds including an elevated silica content.
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Marushchak, Denys. « Fluorescence studies of complex systems : organisation of biomolecules ». Doctoral thesis, Umeå : Department of Chemistry, Umeå University, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-979.

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Zawadka, Aleksandra. « Amphiphilic self-assembly polymers with improved environmental profile for home and personal care products ». Doctoral thesis, Università di Siena, 2022. http://hdl.handle.net/11365/1204458.

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Graft copolymers constitute an important class of copolymers since it is possible to tune their characteristics opportunely designing their macromolecular structure. There is a growing interest for the design and synthesis of graft copolymers with desired composition and functionality to be used in a wide range of applications. Free radical polymerization techniques offer the straightforward synthesis of amphiphilic graft copolymers materials thanks also to the vast choice of available monomers with different functional groups. Amphiphilic graft copolymers, or polymer containing both hydrophilic and hydrophobic parts in their structure, possess unique properties due to the distinct chemical nature of building blocks and can self-assembly to various morphologies to render the favorable interactions. Characteristics of graft copolymers can be adjusted through the variations of composition (type of the grafted chains, grafting densities) and architecture (length of backbone and grafted chains etc.). Therefore, understanding the relation between the macromolecular architecture, composition and characteristics is crucial to tailor polymers for specific applications. This thesis covers the synthesis, characterization, and applications of amphiphilic graft copolymers, to reveal the effects of their chemical structure on capsules formation, encapsulation of fragrance molecules, and biodegradability rate. A wide range of applications can be defined for the use of amphiphilic copolymers. This work focuses on the self-assembly properties of amphiphilic copolymers, with improved environmental profile, for potential use in perfume sustainable encapsulation technology in liquid home- and personal-care products. To achieve the synthesis of copolymers with self-assembled structures, hydrophilic poly (ethylene glycols) (PEGs) of different molecular weights, hydrophilic and hydrophobic monomers like thermo-responsive N-vinyl caprolactam (VCL) and/or vinyl acetate (VAc), have been used. Amphiphilic copolymers were obtained through a radical polymerization method using peroxide as an initiator. Different molecular weights (lengths of the chain), grafting densities as well as various chemical moieties have been investigated. Synthetized materials were characterized by FT-IR, 1D NMR, 2D NMR, DSC, TGA, GPC, ToF-Sims. Biodegradability of copolymers was measured by OECD 301b test and capsules formation properties were investigated using fluorescence microscopy. The studies reported in this work demonstrated that the capsules formation by synthetized copolymers in liquid detergent formulations strongly depend on the molecular weight of hydrophobic content and the degree of grafting of hydrophobic graft chains. Among all synthetized copolymers and commercial copolymer Soluplus only copolymer S2, which has the highest molecular weight of hydrophobic PVAc-co-PVCL part and higher grafting degree, showed capsules formation and encapsulation of perfume and PRMs in both SLFE liquid detergent formulations and water matrix. All synthesized copolymers are 4 -5 folds more biodegradable than commercial Soluplus.
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Livres sur le sujet "HOMO POLYMER"

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Mabey, M. J. Development, testing, and product listing of two new fire-retardant products for new home construction. [Edmonton, Alta.] : Alberta Municipal Affairs, Innovative Housing Grants Program, 1990.

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Fire Retardant Chemicals Association (U.S.). Spring Conference. Technical and marketing issues impacting the fire safety of building and construction and home furnishings applications : Papers presented at [the 1992 Spring Conference], Stouffer Orlando Resort, Orlando, Florida, March 29-April 1, 1992. Lancaster, Pa : Fire Retardant Chemicals Association, 1992.

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Heaser, Sue. Creative Home Decor in Polymer Clay. North Light Books, 2001.

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Polymer Clay Projects : Fabulous Jewellery, Accessories, & Home Decor. Stackpole Books, 2014.

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Miller, Jane. Diy Polymer Clay Jewelry Making for Beginners : A Simple Step by Step Guide in Making Polymer Clay Jewelry at Home. Independently Published, 2021.

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Step by Step Polymer Clay in a Day : Over 15 Exciting Projects, from Gifts to Accessories for the Home. North Light Books, 2003.

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Made-By-Hand Clay Flowers : Polymer Clay Flowers for the Home Table : Handmade Polymer Clay Flowers for Your Home's Table Decor. Independently Published, 2022.

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Aytche, Kevin. Beginner's Guide to Polymer Clay : Simple Techniques You Can Try at Home. Independently Published, 2022.

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Han, Han. Polymer clay Chinese style : Unique home decorating projects that bridge Western crafts and Oriental arts. 2016.

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Torres, Jennifer. Clay Craft Projects : Making Something Cute Clay for Your Home : Decorations with Polymer Clay. Independently Published, 2022.

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Chapitres de livres sur le sujet "HOMO POLYMER"

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Allen, R. D., T. E. Long et J. E. McGrath. « Synthesis of Tactic Poly(Alkyl Methacrylate) Homo and Copolymers ». Dans Advances in Polymer Synthesis, 347–62. Boston, MA : Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2121-7_17.

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Costa, J. L. « Molecular structure : characterization and related properties of homo- and copolymers ». Dans Polymer Science and Technology Series, 503–10. Dordrecht : Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4421-6_68.

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Tereshin, A., et V. Kulichikhin. « Experimental Study of Anysotropic Viscoelasticity of Homo and Heterophase Polymer Systems ». Dans Progress and Trends in Rheology V, 445–46. Heidelberg : Steinkopff, 1998. http://dx.doi.org/10.1007/978-3-642-51062-5_215.

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van Herk, Alex M. « Emulsion (Homo)polymerization ». Dans Encyclopedia of Polymeric Nanomaterials, 1–8. Berlin, Heidelberg : Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-36199-9_259-1.

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van Herk, Alex M. « Emulsion (Homo)polymerization ». Dans Encyclopedia of Polymeric Nanomaterials, 688–95. Berlin, Heidelberg : Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-29648-2_259.

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Gooch, Jan W. « Homeo Box ». Dans Encyclopedic Dictionary of Polymers, 899. New York, NY : Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_13935.

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Paderes, Monissa, Deepak Ahirwal et Susana Fernández Prieto. « 7. Natural and synthetic polymers in fabric and home care applications ». Dans Polymer Engineering, sous la direction de Bartosz Tylkowski, Karolina Wieszczycka et Renata Jastrzab, 203–34. Berlin, Boston : De Gruyter, 2017. http://dx.doi.org/10.1515/9783110469745-007.

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Gauthier, M. « Arborescent Polymers : Highly Branched Homo-and Copolymers with Unusual Properties ». Dans Ionic Polymerizations and Related Processes, 239–57. Dordrecht : Springer Netherlands, 1999. http://dx.doi.org/10.1007/978-94-011-4627-2_15.

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« Plasma Homo- and Copolymerization of Allyl Alcohol and Styrene ». Dans Polymer Surface Modification : Relevance to Adhesion, Volume 5, 327–50. CRC Press, 2009. http://dx.doi.org/10.1201/b12243-25.

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« Thermally Responsive Materials ». Dans Stimuli-Responsive Materials : From Molecules to Nature Mimicking Materials Design, 55–93. The Royal Society of Chemistry, 2016. http://dx.doi.org/10.1039/bk9781849736565-00055.

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This chapter focuses on thermally responsive polymers and their building blocks. Starting from polymeric assemblies in solutions, going into solids with stimuli-responsive transitions, a comprehensive summary of existing monomers capable of thermal responses is provided. The attractiveness of temperature-responsive homo- and copolymers is primarily driven by the ability of macromolecular segments to undergo conformational changes at a designated temperature. The earliest reports of the thermal phase transitions in poly(N-isopropylacrylamide) (PNIPAM) go back to the late 1960s, and this still continues to be an important and advantageous area in controlled drug delivery, bioseparation, enzyme activity, filtration, and mediating surface/interfacial properties. The last section of this chapter focuses in the thermally responsive peptides, their stimuli-responsiveness, selected applications, and examining the general principles governing the role of entropic contributions to stimuli-responsiveness.
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Actes de conférences sur le sujet "HOMO POLYMER"

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Sandhya, Ch, K. Hima Bindu, K. P. N. Murthy, V. S. S. Sastry, Alka B. Garg, R. Mittal et R. Mukhopadhyay. « Phase Transition in a Bond Fluctuating Linear Homo Polymer ». Dans SOLID STATE PHYSICS, PROCEEDINGS OF THE 55TH DAE SOLID STATE PHYSICS SYMPOSIUM 2010. AIP, 2011. http://dx.doi.org/10.1063/1.3605765.

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Sakiyama, S., T. Komura, N. Mizutani et K. Fujita. « Polymer Semiconductor Homo-Junction Diode Fabricated by Wet Process ». Dans 2016 International Conference on Solid State Devices and Materials. The Japan Society of Applied Physics, 2016. http://dx.doi.org/10.7567/ssdm.2016.f-5-04.

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Gao, Chen, Yu-Ting Wu, En-Hao Xing et Xiao-Lei Zhao. « Study on Algicidal Performance and Mechanism of Diallyldimethylammonium Chloride and its Homo-Polymer ». Dans 2015 International Conference on Energy, Environmental & Sustainable Ecosystem Development (EESED 2015). WORLD SCIENTIFIC, 2015. http://dx.doi.org/10.1142/9789814723008_0087.

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Ziemann, Olaf, et Hans Poisel. « Status of Gigabit Home Networks with Polymer Optical Fibers ». Dans Access Networks and In-house Communications. Washington, D.C. : OSA, 2010. http://dx.doi.org/10.1364/anic.2010.awb1.

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Qian, Yanbing, et Jianfeng Zhang. « Low bandgap polymers with low HOMO level for bulk heterojunction organic solar cells ». Dans 2011 International Conference on Electrical and Control Engineering (ICECE). IEEE, 2011. http://dx.doi.org/10.1109/iceceng.2011.6058453.

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Miao, Pu, et Lenan Wu. « Composite transmission over large-core polymer optical fibers for in-home networkings ». Dans 2014 21st International Conference on Telecommunications (ICT). IEEE, 2014. http://dx.doi.org/10.1109/ict.2014.6845090.

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Malone, Evan, et Hod Lipson. « Multi-Material Freeform Fabrication of Active Systems ». Dans ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis. ASMEDC, 2008. http://dx.doi.org/10.1115/esda2008-59313.

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Current Solid Freeform Fabrication (SFF) technologies can manufacture, directly from digital data, end-use mechanical parts in an increasingly wide variety of engineering materials. However, commercial SFF systems remain costly, complex, proprietary, and are limited to working with one or two proprietary materials during the course of building a part, hindering their broader application and the impact of the technology. The work we present here demonstrates (1) that SFF systems can employ many materials and multiple processes during the course of building a single object, (2) that such systems can produce complete, active, electromechanical devices, rather than only mechanical parts, and (3) that such multi-material SFF systems can be made accessible to, and are of interest to the general public. We have developed a research-oriented, multi-material SFF system and employed it to produce not only mechanical parts, but complete and functional Zn-air batteries, electrical wiring, flexible circuit boards, strain-gages, electromagnets, electroactive polymer actuators, organic-polymer transistors, and electromechanical relays. We have also developed and published the Fab@Home Model 1 open-source, multi-material, freeform fabrication system design. The Fab@Home project has received broad public and media attention, and more than 100 Model 1 machines have been built by individuals around the world.
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Popoola, Wasiu O., Evangelos Pikasis et Isaac Osahon. « Hybrid polymer optical fibre and visible light communication link for in-home network ». Dans 2017 26th Wireless and Optical Communication Conference (WOCC). IEEE, 2017. http://dx.doi.org/10.1109/wocc.2017.7928989.

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Kelland, Malcolm A., et Janronel Pomicpic. « Multi-Functional Flow Assurance Inhibitors : Three Birds With One Stone ? » Dans SPE International Conference on Oilfield Chemistry. SPE, 2023. http://dx.doi.org/10.2118/213817-ms.

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Abstract Due to the presence of produced water, several fouling problems such as gas hydrates and scale, as well as corrosion can occur in unprocessed subsea production flow lines. Several treatment chemicals often need to be injected simultaneously at the well head into these flow lines. Among them are hydrate, scale, and corrosion inhibitors. However, some combinations of these chemicals can be antagonistic. We have investigated the possibility to combine all three properties into one molecule. We used kinetic hydrate inhibitor (KHI) polymers as the developmental starting point for use in cold flow lines with low to medium gas hydrate subcooling potential. We focussed on maleic-based polymers as they offer a low cost - high performance solution with great flexibility to also incorporate functionality for scale and corrosion inhibition. A set of low molecular weight maleic homo- and copolymers were synthesized and synergists added to improve the CO2 corrosion inhibition performance. The KHI performance was determined in high pressure steel rocking cells, scale calcite inhibition in static jar and dynamic tube blocking test equipment and sweet corrosion inhibition in a CO2 bubble test cell. The difficulties of achieving the "triple", three different inhibitors in one molecule, will be highlighted.
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Supian, Latifah S., Mohammad Syuhaimi Ab-Rahman, Hadi Guna, Hazwan Harun, Malik Sulaiman et Nani Fadzlina Naim. « Low-cost fused taper polymer optical fiber (LFT-POF) splitters for environmental and home-networking solution ». Dans Third International Conference on Applications of Optics and Photonics, sous la direction de Manuel Filipe P. Martins Costa. SPIE, 2017. http://dx.doi.org/10.1117/12.2271396.

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Rapports d'organisations sur le sujet "HOMO POLYMER"

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Bendikov, Michael, et Thomas C. Harmon. Development of Agricultural Sensors Based on Conductive Polymers. United States Department of Agriculture, août 2006. http://dx.doi.org/10.32747/2006.7591738.bard.

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In this 1-year feasibility study, we tried polymerization of several different monomers, commercial as well as novel, specially designed and synthesized for this project in the presence of the nitrate ion to produce imprinted conductive polymers. Polymers 1 and 2 (shown below) produced a response to nitrate, but one inferior to that produced by a polypyrrole (Ppy)-based sensor (which we demonstrated prior to this study). Thus, we elected to proceed with improving the stability of the Ppy-based sensor. In order to improve stability of the Ppy-based sensor, we created a two-layer design which includes nitrate-doped Ppy as an inner layer, and nitrate-doped PEDOT as the outer layer. PEDOT is known for its high environmental stability and conductivity. This design has demonstrated promise, but is still undergoing optimization and stability testing. Previously we had failed to create nitrate-doped PEDOT in the absence of a Ppy layer. Nitrate-doped PEDOT should be very promising for sensor applications due to its high stability and exceptional sensing properties as we showed previously for sensing of perchlorate ions (by perchlorate-doped PEDOT). During this year, we have succeeded in preparing nitrate-doped PEDOT (4 below) by designing a new starting monomer (compound 3 below) for polymerization. We are currently testing this design for nitrate sensing. In parallel with the fabrication design studies, we fabricated and tested nitrate-doped Ppy sensors in a series of flow studies under laboratory and field conditions. Nitrate-doped Ppy sensors are less stable than is desirable but provide excellent nitrate sensing characteristics for the short-term experiments focusing on packaging and deployment strategies. The fabricated sensors were successfully interfaced with a commercial battery-powered self-logging (Onset Computer Hobo Datalogger) and a wireless data acquisition and transmission system (Crossbow Technologies MDA300 sensor interface and Mica2 wireless mote). In a series of flow-through experiments with water, the nitrate-doped Ppy sensors were exposed to pulses of dissolved nitrate and compared favorably with an expensive commercial sensor. In 24-hour field tests in both Merced and in Palmdale, CA agricultural soils, the sensors responded to introduced nitrate pulses, but with different dynamics relative to the larger commercial sensors. These experiments are on-going but suggest a form factor (size, shape) effect of the sensor when deployed in a porous medium such as soil. To fill the need for a miniature reference electrode, we identified and tested one commercial version (Cypress Systems, ESA Mini-reference electrode) which works well but is expensive ($190). To create an inexpensive miniature reference electrode, we are exploring the use of AgCl-coated silver wire. This electrode is not a “true” reference electrode; however, it can calibrated once versus a commercial reference electrode at the time of deployment in soil. Thus, only one commercial reference electrode would suffice to support a multiple sensor deployment.
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