Bibliographies thématiques / Glass-Nanocomposites

Littérature scientifique sur le sujet « Glass-Nanocomposites »

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Publié le 7 septembre 2023

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Articles de revues sur le sujet "Glass-Nanocomposites"

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Zarbin, Aldo J. G., Marco-A. De Paoli et Oswaldo L. Alves. « Nanocomposites glass/conductive polymers ». Synthetic Metals 99, no 3 (février 1999) : 227–35. http://dx.doi.org/10.1016/s0379-6779(98)01510-0.

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Tijjani, Y. « Quartz, glass, and glass-ceramic matrix nanocomposites ; containing carbon nanotubes : a review ». Bayero Journal of Pure and Applied Sciences 15, no 1 (9 décembre 2022) : 1–10. http://dx.doi.org/10.4314/bajopas.v15i1.1.

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Various concepts of techniques for incorporating carbon nanotubes in quartz, glass and glass-ceramic matrices are overviewed. Mechanical; in particular fracture toughness, hardness and strength, physical; density and microstructures, and functional; thermal and electrical conductivities of the fabricated CNT-loaded nanocomposites via different processing route and measuring techniques were compared and reported. Processing challenges such as the homogenous dispersion of the CNTs in the quartz, glass and glassceramic matrices and the loss of graphitic nanotubes during the consolidation process are still the major impending issues in CNT-quartz/glass/glass-ceramic matrix nanocomposites. There is need to explore in-situ production techniques, spark plasma sintering consolidation method, and controlled colloidal/sol-gel processes for CNTquartz/glass/glass-ceramic matrix nanocomposites.
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Peng, Shirley, et Jude O. Iroh. « Dependence of the Dynamic Mechanical Properties and Structure of Polyurethane-Clay Nanocomposites on the Weight Fraction of Clay ». Journal of Composites Science 6, no 6 (14 juin 2022) : 173. http://dx.doi.org/10.3390/jcs6060173.

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The effect of clay and chemical cross-linking on the dynamic mechanical properties of polyurethane reinforced with different concentrations of organically modified montmorillonite clay is investigated in this study. The polyurethane matrix is constituted of polytetrahydrofuran soft segment and 4,4′-methylenebis(phenyl isocyanate) hard segment. Glycerin was used as the chemical crosslinking agent, while Cloisite 30B clay was the reinforcing filler. The nanocomposites containing up to 1 wt.% clay showed a uniform dispersion of clay; however, the nanocomposites containing higher concentrations of clay showed the presence of heterogeneities. Dynamic mechanical spectroscopy, DMS revealed that the nanocomposites containing between 2 and 10 wt.% clay had two glass transition temperatures, Tg,1 and Tg,2. The higher-temperature glass transition temperature, Tg,2 increased with increasing clay concentration, while the low-temperature glass transition temperature, Tg,1 decreased with increasing clay concentration. The nanocomposites containing low clay concentrations up to 1 wt.% showed only one glass transition temperature with a narrow glass transition region. The crosslink density for the nanocomposites increased with increasing wt.% clay.
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Prasad, M. M., N. Manikandan et S. M. Sutharsan. « Investigation on mechanical properties of reinforced glass fibre/epoxy with hybrid nano composites ». Digest Journal of Nanomaterials and Biostructures 16, no 2 (2021) : 455–69. http://dx.doi.org/10.15251/djnb.2021.162.455.

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In this study the experimental investigation of mechanical behaviour of Multi-Walled Carbon nanotubes (MWCNTs) and Aluminium Oxide (Al2O3) reinforced with EGlass/Epoxy nanocomposites at 0.5%, 1.5% and 2.0% of weight rated with 225 GSM, 300 GSM and 450 GSM glass fibres were studied. Test specimens were prepared at the standardof ASTM D638 for tensile specimen ASTM D256 for impact specimen. Testspecimens were prepared at the ratio of MWCNTs: Al2O3 is 1:4. 1.5 wt. % of MultiWalled CNTs filledE-Glass/Epoxy nanocomposites showed improved mechanical properties than glass fiber reinforced epoxy composites.450 GSM reinforced glass fiber epoxy composites containing 1.5wt. % of MWCNTs improved 36.27 % of higher tensile value and 28.57 % of impact value than the glass fibre reinforced epoxy composites. 225 and 300 GSM reinforced glass fibre epoxy composites with 1.5 wt. % of MWCNTs composites also has improved tensile and impact value than glass fibre reinforced epoxy composites. But, overall 450 GSM reinforced fibre nanocomposites showed enhanced mechanical properties than the other GSM reinforced nanocomposites. This proves MultiWalled Carbon Nanotubes is a successful reinforcement for E-Glass/Epoxy matrix and it improves its properties and performance.
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Tsai, Jia Lin, et Ming Dao Wu. « Organoclay Effect on Transverse Tensile Strength and In-Plane Shear Strength of Unidirectional Glass/Epoxy Nanocomposites ». Key Engineering Materials 334-335 (mars 2007) : 773–76. http://dx.doi.org/10.4028/www.scientific.net/kem.334-335.773.

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This research focuses on the fabrication of glass fiber/epoxy organoclay nanocomposites as well as on the investigation of organoclay effect on transverse tensile strength and in-plane shear strength of the nanocomposites. To demonstrate the organoclay effect, three different loadings of organoclay were dispersed respectively in the epoxy resin using a mechanical mixer followed by sonication. The corresponding glass/epoxy nanocomposites were produced by impregnating dry glass fiber with organoclay epoxy compound via a vacuum hand lay-up procedure. For evaluating transverse tensile strengths, the unidirectional coupon specimens were prepared and tested in the transverse direction. Results indicate that with the increment of organoclay loadings, the glass/epoxy nanocomposites demonstrate higher transverse tensile strength. On the other hand, the in-plane shear strengths were measured from [± 45]s laminates. It is revealed that when the organoclay loadings increase, the in-plane shear strength of glass/epoxy nanocomposites also increases appropriately. Scanning Electron Microscopy (SEM) observations on the failure surfaces indicate that the increasing characteristics in transverse and in-plane failure stresses may be ascribed to the enhanced fiber/matrix bonding modified by the organoclay.
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Ganshina, Elena Alexandrovna, Vladimir Valentinovich Garshin, Ilya Mikhailovich Pripechenkov, Sergey Alexandrovich Ivkov, Alexander Victorovich Sitnikov et Evelina Pavlovna Domashevskaya. « Effect of Phase Transformations of a Metal Component on the Magneto-Optical Properties of Thin-Films Nanocomposites (CoFeZr)x (MgF2)100−x ». Nanomaterials 11, no 7 (24 juin 2021) : 1666. http://dx.doi.org/10.3390/nano11071666.

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The results of complex studies of structural-phase transformations and magneto-optical properties of nanocomposites (CoFeZr)x (MgF2)100−x depending on the metal alloy content in the dielectric matrix are presented. Nanocomposites were deposited by ion-beam sputtering onto glass and glass-ceramic substrate. By studying the spectral and field dependences of the transversal Kerr effect (TKE), it was found that the transition of nanocomposites from superparamagnetic to the ferromagnetic state occurs in the region of xfm~30 at%, that corresponds to the onset the formation of ferromagnetic nanocrystals CoFeZr with hexagonal syngony in amorphous dielectric matrix of MgF2. With an increase of concentrations of the metal alloy for x > xfm, the features associated with structural transitions in magnetic granules are revealed in the TKE spectra. Comparison of the spectral and concentration dependences of TKE for nanocomposites on the glass and glass-ceramics substrates showed that the strongest differences occur in the region of the phase structural transition of CoFeZr nanocrystals from a hexagonal to a body-centered cubic structure at x = 38 at.% on the glass substrates and at x = 46 at.% on glass-ceramics substrates, due to different diffusion rates and different size of metal nanocrystals on amorphous glass substrates and more rough polycrystalline glass-ceramics substrates.
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Hu, Xiao Lan, Xi Lan, Teng Fei Lu, Hong Shan Yang et Ying Lai Yang. « A Copolymerization Modified Acrylate Resin and its Polyhedral Oligomeric Silsesquioxane Composites ». Advanced Materials Research 887-888 (février 2014) : 97–100. http://dx.doi.org/10.4028/www.scientific.net/amr.887-888.97.

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An acrylate resin copolymerized with epoxy and amino resin was prepared in this paper, and its polyhedral oligomeric silsesquioxane (POSS) modified nanocomposites were fabricated via physical blending. Results showed that glass transition temperature of the acrylate copolymer was about 7.9 oC via DSC. Dispersion of nanocomposites with aminopropyllsobutyl POSS is better than those with Octalsobutyl POSS. Moreover, glass transition temperatures of the nanocomposites with POSS are close to the acrylate copolymer matrix.
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Daneshpayeh, Sajjad, Amir Tarighat, Faramarz Ashenai Ghasemi et Mohammad Sadegh Bagheri. « A fuzzy logic model for prediction of tensile properties of epoxy/glass fiber/silica nanocomposites ». Journal of Elastomers & ; Plastics 50, no 6 (18 octobre 2017) : 491–500. http://dx.doi.org/10.1177/0095244317733768.

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The object of this work is to study and predict the tensile properties (tensile strength, elastic modulus, and elongation at break) of ternary nanocomposites based on epoxy/glass fiber/nanosilica using the fuzzy logic (FL). Two factors in three levels including glass fiber at 0, 5, and 10 wt% and nanosilica at 0, 0.5, and 1 wt% were chosen for adding to an epoxy matrix. From FL surfaces, it was found that the glass fiber content had a main role in the tensile properties of nanocomposites. The high levels of glass fiber content led to a significant increase in the elastic modulus and generally, the presence of glass fiber decreased the tensile strength and elongation at break. Also, addition of the nanosilica content resulted in an increased elastic modulus but decreased the elongation at break of nanocomposites. Finally, an FL model was obtained for each tensile property.
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Tsai, Jia Lin, Jui Ching Kuo et Shin Ming Hsu. « Fabrication and Mechanical Properties of Glass Fiber/Epoxy Nanocomposites ». Materials Science Forum 505-507 (janvier 2006) : 37–42. http://dx.doi.org/10.4028/www.scientific.net/msf.505-507.37.

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This research is aimed to fabricate glass fiber/epoxy nanocomposites containing organoclay as well as to understand the organoclay effect on the in-plane shear strength of the nanocomposites. To demonstrate the organoclay effect, three different loadings of organoclay, were dispersed in the epoxy resin using mechanical mixer followed by sonication. The corresponding glass/epoxy nanocomposites were prepared by impregnating the organoclay epoxy mixture into the dry glass fiber through a vacuum hand lay-up process. Off-axis block glass/epoxy nanocomposites were tested in compression to produce in-plane shear failure. It is noted only the specimens showing in-plane shear failure mode were concerned in this study. Through coordinate transformation law, the uniaxial failure stresses were then converted to a plot of shear stress versus transverse normal stress from which the in-plane shear strength was obtained. Experimental results showed that the fiber/epoxy nanocomposite exhibit higher in-plane shear strength than the conventional composites. This increased property could be ascribed to the enhanced fiber/matrix adhesion promoted by the organoclay.
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Fujino, Shigeru, et Hiroshi Ikeda. « Room Temperature Imprint Using Crack-Free Monolithic SiO2-PVA Nanocomposite for Fabricating Microhole Array on Silica Glass ». Journal of Nanomaterials 2015 (2015) : 1–7. http://dx.doi.org/10.1155/2015/584320.

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This paper aims to fabricate microhole arrays onto a silica glass via a room temperature imprint and subsequent sintering by using a monolithic SiO2-poly(vinyl alcohol) (PVA) nanocomposite as the silica glass precursor. The SiO2-PVA suspension was prepared from fumed silica particles and PVA, followed by drying to obtain tailored SiO2-PVA nanocomposites. The dependence of particle size of the fumed silica particles on pore size of the nanocomposite was examined. Nanocomposites prepared from 7 nm silica particles possessed suitable mesopores, whereas the corresponding nanocomposites prepared from 30 nm silica particles hardly possessed mesopores. The pore size of the nanocomposites increased as a function of decreasing pH of the SiO2-PVA suspension. As a consequence, the crack-free monolithic SiO2-PVA nanocomposite was obtained using 7 nm silica particles via the suspension at pH 3. Micropatterns were imprinted on the monolithic SiO2-PVA nanocomposite at room temperature. The imprinted nanocomposite was sintered to a transparent silica glass at 1200°C in air. The fabricated sintered glass possessed the microhole array on their surface with aspect ratios identical to the mold.
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Thèses sur le sujet "Glass-Nanocomposites"

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Wackerow, Stefan. « Fabrication and characterisation of silver-glass nanocomposites ». Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/1371615f-51ae-4210-bc46-c13c0199f478.

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Metallic nanoparticles and nanostructures have spawned significant interest in a wide area of science. Nanoparticles in glass show unique linear and nonlinear optical properties due to surface plasmon resonances. These induce absorption and scattering of light around the resonance wavelength, which can be tuned by changing size, shape or spatial distribution of the nanoparticles. Metallic nanostructures show local field enhancement effects, which are used for example in surface enhanced Raman scattering. Their large surface area compared to bulk materials makes them interesting for applications in chemistry and life science. In this thesis the synthesis of two different types of silver-glass nanocomposites is investigated. Both materials are prepared from silver ion-exchanged glass, which is also prepared and characterised in house. The first type of nanocomposite is glass doped with silver nanoparticles. It is formed by annealing silver ion-exchanged glass at a temperature close to the transition point. This induces the reduction of silver to atoms and the agglomeration in nanoparticles with a diameter of less than 10nm, which are located in a layer beneath the glass surface, which has a thickness of tens of micrometres. These nanoparticles are responsible for a characteristic absorption band centred around 410nm due to plasmon resonances. The second nanocomposite, which was first produced in the course of this work, is called glass-silver composite. It is created by pulsed laser irradiation of silver ion-exchanged glass. It contains nanoparticles with a diameter of 100nm or more, which are distributed homogeneously in a dense single monolayer at the glass surface. This material shows a strong metal-like reflection of light. The location of nanoparticles at the surface makes it interesting for applications utilising the field enhancement effect of the nanoparticles, such as surface enhanced Raman scattering and enhancement of light conversion. Both nanocomposites and the ion-exchanged glass are characterised by optical microscopy, scanning electron microscopy and optical spectroscopy. The work is divided in four chapters, starting with an introduction in chapter 1. In chapter 2 the method of production of the silver ion-exchanged glass and the properties of the material are presented. Generation of nanoparticles inside the glass by annealing is covered in chapter 3 and an analysis of laser processing of ion-exchanged glasses is shown in chapter 4. The concluding chapter consists of a summary of the work and an outlook.
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Bhardwaj, Mohit. « Water vapor diffusion through glass fiber reinforced polymer nanocomposites ». Morgantown, W. Va. : [West Virginia University Libraries], 2005. https://eidr.wvu.edu/etd/documentdata.eTD?documentid=4193.

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Thesis (M.S.)--West Virginia University, 2005.
Title from document title page. Document formatted into pages; contains x, 133 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 116-118).
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Qureshi, Muhammad Asif Mahmood. « Glass-fiber reinforced polymer-clay nanocomposites in structural applications ». Morgantown, W. Va. : [West Virginia University Libraries], 2009. http://hdl.handle.net/10450/10557.

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Thesis (M.S.)--West Virginia University, 2009.
Title from document title page. Document formatted into pages; contains xi, 71 p. : ill. (some col.). Includes abstract. Includes bibliographical references (p. 69-71).
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Tong, Wan. « Characterisation of PA/clay nanocomposite and glass fibre filled PA/clay nanocomposites ». Thesis, University of Nottingham, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.439857.

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Tang, Guang. « Nanosecond pulsed laser processing of metals and welding of metal-glass nanocomposites ». Thesis, University of Dundee, 2014. https://discovery.dundee.ac.uk/en/studentTheses/9b39b598-92e3-4118-bc99-034a360e8e3d.

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In this thesis, nanosecond pulsed lasers are used as the tools to generate microstructures on metal and glass. The applications of these structures are described too. The production of micro structures is demonstrated using diode-pumped solid state (DPSS) Nd:YVO4 lasers operating at wavelengths of 532nm or 1064 nm. The laser fluence and scanning speed are important parameters to control the results. The first part of thesis is on the laser generation of microstructures on metal surfaces. Copper (Cu) and titanium (Ti) have been studied. According to the reflectivity of metals, Cu is processed by a 532nm laser and Ti is processed by a 1064nm laser. It is shown that the periods of surface microstructures are highly dependent on the hatch distance (overlapping distance between laser scanning). Only if the laser fluence is greater than a threshold, may the microstructures on metals be induced. The thresholds are measured by the diameters of ablated areas at different fluence. Laser generated surface microstructures have been applied to modify the reflectivity of a Cu sample. It was found that laser induced surface microstructures on Copper can decrease the surface reflectivity by almost 97% between 250 nm and 700 nm. To find the mechanism of how to form microstructure on metal surface with laser, laser ablation and heating models have been studied. The 1D ablated numerical model is calculated in Matlab. The pressure of metal vapour is an important parameter, as it pushes the melted metal out of surface to form microstructures after re-solidification. The second part of thesis is on glass welding with microstructures on glass surfaces. The soda-lime glasses containing silver nanoparticles (from the company Codixx) have been studied and welded with Schott B270 glass. Compared with other techniques for welding glass, lasers offer the advantage of a relatively simple and flexible technique for joining the local area underneath the cover glass. Most of the laser energy is deposited in the Ag nanoparticle layer because of the large absorption coefficient at 532 nm. Expanded microstructures generated by the laser are applied to fill the gap between the glass surfaces. This is attributed to the formation of bubbles in the Ag nanoparticle layer after laser processing. The welded samples have the joint strength of 4.9 MPa and have great potential for industrial applications. A 3D analytical model is used to estimate the temperature of the glass after the laser pulse. The increase in temperature is about 129 °C. To induce the bubble in glass, many laser pulses are necessary. This is very different from the results for the metals.
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Kandasamy, Prabhakar. « Experimental Determination of Mechanical and Wear Performance of Glass Fiber Reinforced Polymer Nanocomposites ». Thesis, Curtin University, 2020. http://hdl.handle.net/20.500.11937/82465.

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This research work focused to identify the key parameters through systematic approach that influence the interfacial bonding strength between matrix and the glass filler. The enhanced coupling agent of silane due to the nanoclay appropriate concentration interact with the functional groups in the epoxy resin and glass fiber, leads to strong interfacial bonding through the formation of intercalation structure. Henceforth, resulted in increased surface hardness leading improved wear performance of the Glass fiber reinforced nanocomposite.
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Liu, Mingyang. « Improved durability and thermal stability of glass fiber reinforced composites using clay-polymer nanocomposites / ». View abstract or full-text, 2009. http://library.ust.hk/cgi/db/thesis.pl?MECH%202009%20LIU.

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Porwal, Harshit. « Processing and properties of graphene reinforced glass/ceramic composites ». Thesis, Queen Mary, University of London, 2015. http://qmro.qmul.ac.uk/xmlui/handle/123456789/9107.

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This research provides a comprehensive investigation in understanding the effect of the addition of graphene nano-platelets (GNP) on the mechanical, tribological and biological properties of glass/ceramic composites. We investigated two kinds of materials namely amorphous matrices like glasses (silica, bioglass) and polycrystalline matrices like ceramics (alumina). The idea was to understand the effect of GNP on these matrices as GNP was expected to behave differently in these composites. Bioglass (BG) was also chosen as a matrix material to prepare BG-GNP composites. GNP can improve the electrical conductivity of BG which can be used further for bone tissue engineering applications. The effect of GNP on both electrical conductivity and bio-activity of BG-GNP composites was investigated in detail. There were three main problems for fabricating these novel nano-composites: 1) Production of good quality graphene; 2) Homogeneous dispersion of graphene in a glass/ceramic matrix and; 3) Retention of the graphitic structure during high temperature processing. The first problem was solved by synthesising GNP using liquid phase exfoliation method instead of using a commercially available GNP. The prepared GNP were ~1 μm in length with a thickness of 3-4 layers confirmed using transmission electron microscopy. In order to solve the second problem various processing techniques were used including powder and colloidal processing routes along with different solvents. Processing parameters were optimised to fabricate glass/ceramic-GNP composite powders. Finally in order to avoid thermal degradation of the GNP during high temperature processing composites were sintered using spark plasma sintering (SPS) technique. Fully dense composites were obtained without damaging GNP during the sintering process also confirmed via Raman spectroscopy. Finally the prepared composites were characterised for mechanical, tribological and biological applications. Interestingly fracture toughness and wear resistance of the silica nano-composites increased with increasing concentration of GNP in the glass matrix. There was an improvement of ~45% in the fracture toughness and ~550% in the wear resistance of silica-GNP composites with the addition of 5 vol% GNP. GNP was found to be aligned in a direction perpendicular to the applied force in SPS. In contrast to amorphous materials fracture toughness and scratch resistance of alumina-GNP composites increased only for small loading of GNP and properties of the composites decreased after a critical concentration. There was an improvement of ~40% in the fracture toughness with the addition of only 0.5 vol% GNP in the alumina matrix while the scratch resistance of the composite increased by ~10% in the micro-ductile region. Electrical conductivity of the BG-GNP composite was increased by ~9 orders of magnitude compared to pure BG. In vitro bioactivity tests performed on BG-GNP composites confirmed that the addition of GNP to BG matrix also improved the bioactivity of the nano-composites confirmed using XRD analysis. Future work should focus on understanding electrical and thermal properties of these novel nano-composites.
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Ozkoc, Guralp. « Abs/polyamide-6 Blends, Their Short Glass Fiber Composites And Organoclay Based Nanocomposites : Processing And Characterization ». Phd thesis, METU, 2007. http://etd.lib.metu.edu.tr/upload/12608266/index.pdf.

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The objective of this study is to process and characterize the compatibilized blends of acrylonitrile-butadiene-styrene (ABS) and polyamide-6 (PA6) using olefin based reactive copolymers and subsequently to utilize this blend as a matrix material in short glass fiber (SGF) reinforced composites and organoclay based nanocomposites by applying melt processing technique. In this context, commercially available epoxydized and maleated olefinic copolymers, ethylene-methyl acrylate-glycidyl methacrylate (EMA-GMA) and ethylene-n butyl acrylate-carbon monoxide-maleic anhydride (EnBACO-MAH) were used as compatibilizers at different ratios. Compatibilizing performance of these two olefinic polymers was investigated through blend morphologies, thermal and mechanical properties as a function of blend composition and compatibilizer loading level. Incorporation of compatibilizer resulted in a fine morphology with reduced dispersed particle size. At 5 % EnBACO-MAH, the toughness was observed to be the highest among the blends produced. SGF reinforced ABS and ABS/PA6 blends were prepared with twin screw extrusion. The effects of SGF concentration and extrusion process conditions on the fiber length distribution, mechanical properties and morphologies of the composites were examined. The most compatible organosilane type was designated from interfacial tension and short beam flexural tests, to promote adhesion of SGF to both ABS and PA6. Increasing amount of PA6 in the polymer matrix improved the strength, stiffness and also toughness of the composites. Effects of compatibilizer content and ABS/PA6 ratio on the morphology and mechanical properties of 30% SGF reinforced ABS/PA6 blends were investigated. The most striking result of the study was the improvement in the impact strength of the SGF/ABS/PA6 composite with the additions of compatibilizer. Melt intercalation method was applied to produce ABS/PA6 blends based organoclay nanocomposites. The effects of process conditions and material parameters on the morphology of blends, dispersibility of nanoparticles and mechanical properties were investigated. To improve mixing, the screws of the extruder were modified. Processing with co-rotation yielded finer blend morphology than processing with counter-rotation. Clays were selectively exfoliated in PA6 phase and agglomerated at the interface of ABS/PA6. High level of exfoliation was obtained with increasing PA6 content and with screw speed in co-rotation mode. Screw modification improved the dispersion of clay platelets in the matrix.
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Comer, Anthony C. « DYNAMIC RELAXATION PROPERTIES OF AROMATIC POLYIMIDES AND POLYMER NANOCOMPOSITES ». UKnowledge, 2011. http://uknowledge.uky.edu/cme_etds/1.

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The dynamic relaxation characteristics of Matrimid® (BTDA-DAPI) polyimide and several functionalized aromatic polyimides have been investigated using dynamic mechanical and dielectric methods. The functionalized polyimides were thermally rearranged to generate polybenzoxazole membranes with controlled free volume characteristics. All polyimides have application in membrane separations and exhibit three motional processes with increasing temperature: two sub-glass relaxations (ƴ and β transitions), and the glass-rubber (α) transition. For Matrimid, the low-temperature ƴ transition is purely non-cooperative, while the β sub-glass transition shows a more cooperative character as assessed via the Starkweather method. For the thermally rearranged polyimides, the ƴ transition is a function of the polymer synthesis method, thermal history, and ambient moisture. The β relaxation shows a dual character with increasing thermal rearrangement, the emerging lower-temperature component reflecting motions encompassing a more compact backbone contour. For the glass-rubber (α) transition, dynamic mechanical studies reveal a strong shift in Tα to higher temperatures and a progressive reduction in relaxation intensity with increasing degree of thermal rearrangement. The dynamic relaxation characteristics of poly(ether imide) and poly(methyl methacrylate) nanocomposites were investigated by dynamic mechanical analysis and dielectric spectroscopy. The nanoparticles used were native and surface-modified fumed silicas. The nanocomposites display a dual glass transition behavior encompassing a bulk polymer glass transition, and a second, higher-temperature transition reflecting relaxation of polymer chain segments constrained owing to their proximity to the particle surface. The position and intensity of the higher-temperature transition varies with particle loading and surface chemistry, and reflects the relative populations of segments constrained or immobilized at the particle-polymer interface. Dielectric measurements, which were used to probe the time-temperature response across the local sub-glass relaxations, indicate no variation in relaxation characteristics with particle loading. Nanocomposite studies were also conducted on rubbery poly(ethylene oxide) networks crosslinked in the presence of MgO or SiO2 nanoparticles. The inclusion of nanoparticles led to a systematic increase in rubbery modulus and a modest positive offset in the measured glass transition temperature (Tα) for both systems. The sizeable increases in gas transport with particle loading reported for certain other rubbery nanocomposite systems were not realized in these crosslinked networks.
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Livres sur le sujet "Glass-Nanocomposites"

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Stalmashonak, Andrei, Gerhard Seifert et Amin Abdolvand. Ultra-Short Pulsed Laser Engineered Metal-Glass Nanocomposites. Heidelberg : Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00437-2.

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Stalmashonak, Andrei. Ultra-Short Pulsed Laser Engineered Metal-Glass Nanocomposites. Heidelberg : Springer International Publishing, 2013.

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Menaa, Bouzid. Bioencapsulation in silica-based nanoporous sol-gel glasses. New York : Nova Science Publishers, 2010.

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4

Bouzid, Menaa, dir. Bioencapsulation in silica-based nanoporous sol-gel glasses. Hauppauge, N.Y : Nova Science Publishers, 2009.

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Glass Nanocomposites. Elsevier, 2016. http://dx.doi.org/10.1016/c2014-0-02375-1.

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Sharma, Sumit. Metallic Glass-Based Nanocomposites. Taylor & Francis Group, 2019.

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Metal Oxide Glass Nanocomposites. Elsevier, 2020. http://dx.doi.org/10.1016/c2018-0-01306-7.

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Bhattacharya, Sanjib. Metal Oxide Glass Nanocomposites. Elsevier, 2020.

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Bhattacharya, Sanjib. Metal Oxide Glass Nanocomposites. Elsevier, 2020.

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Karmakar, Basudeb, Klaus Rademann et Andrey Stepanov. Glass Nanocomposites : Synthesis, Properties and Applications. Elsevier Science & Technology Books, 2016.

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Chapitres de livres sur le sujet "Glass-Nanocomposites"

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Prasad, Nupur. « Metallic Glass Nanocomposites ». Dans Metallic Glass–Based Nanocomposites, 35–55. Boca Raton : Taylor … Francis Group, LLC, CRC Press is an imprint of Taylor … Francis Group, 2020. : CRC Press, 2019. http://dx.doi.org/10.1201/9780429021992-2.

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Prasad, Nupur. « Introduction to Metallic Glasses ». Dans Metallic Glass–Based Nanocomposites, 1–34. Boca Raton : Taylor … Francis Group, LLC, CRC Press is an imprint of Taylor … Francis Group, 2020. : CRC Press, 2019. http://dx.doi.org/10.1201/9780429021992-1.

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Sharma, Sumit, Pramod Kumar, Rakesh Chandra et Nitin Thakur. « Molecular Modeling of Metallic Glasses and Their Nanocomposites ». Dans Metallic Glass–Based Nanocomposites, 57–86. Boca Raton : Taylor … Francis Group, LLC, CRC Press is an imprint of Taylor … Francis Group, 2020. : CRC Press, 2019. http://dx.doi.org/10.1201/9780429021992-3.

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Dondapati, Raja Sekhar. « Predicting Thermal Conductivity of Metallic Glasses and Their Nanocomposites ». Dans Metallic Glass–Based Nanocomposites, 87–113. Boca Raton : Taylor … Francis Group, LLC, CRC Press is an imprint of Taylor … Francis Group, 2020. : CRC Press, 2019. http://dx.doi.org/10.1201/9780429021992-4.

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Sharma, Sumit, Prince Setia, Uday Krishna Ravella et Gaurav Sharma. « Study of Damping Behavior of Metallic Glass Composites at Nanoscale Using Molecular Dynamics ». Dans Metallic Glass–Based Nanocomposites, 115–22. Boca Raton : Taylor … Francis Group, LLC, CRC Press is an imprint of Taylor … Francis Group, 2020. : CRC Press, 2019. http://dx.doi.org/10.1201/9780429021992-5.

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Dondapati, Raja Sekhar. « MATLAB® Programming of Properties of Metallic Glasses and Their Nanocomposites ». Dans Metallic Glass–Based Nanocomposites, 123–48. Boca Raton : Taylor … Francis Group, LLC, CRC Press is an imprint of Taylor … Francis Group, 2020. : CRC Press, 2019. http://dx.doi.org/10.1201/9780429021992-6.

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Smith, Ryan J., Youssef K. Hamidi et M. Cengiz Altan. « Processing and Properties of Carbon Nanotubes/Glass/Epoxy Nanocomposites ». Dans Processing of Polymer Nanocomposites, 435–62. München : Carl Hanser Verlag GmbH & Co. KG, 2019. http://dx.doi.org/10.3139/9781569906361.015.

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Stalmashonak, Andrei, Gerhard Seifert et Amin Abdolvand. « Ultra-Short Pulsed Laser Engineering of Metal–Glass Nanocomposites ». Dans SpringerBriefs in Physics, 59–67. Heidelberg : Springer International Publishing, 2013. http://dx.doi.org/10.1007/978-3-319-00437-2_7.

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Tsai, Jia Lin, Jui Ching Kuo et Shin Ming Hsu. « Fabrication and Mechanical Properties of Glass Fiber/Epoxy Nanocomposites ». Dans Materials Science Forum, 37–42. Stafa : Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-990-3.37.

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Nowaczyński, Rafał, Marcin Gajc, Hańcza B. Surma, Piotr Paszke, Kamil Szlachetko, Piotr Piotrowski et Dorota A. Pawlak. « Volumetric, Glass-Based Luminescent Nanocomposites Produced Using the NPDD Method ». Dans NATO Science for Peace and Security Series B : Physics and Biophysics, 275–77. Dordrecht : Springer Netherlands, 2022. http://dx.doi.org/10.1007/978-94-024-2138-5_23.

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Actes de conférences sur le sujet "Glass-Nanocomposites"

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Bescher, Eric P., Yuhuan Xu et John D. Mackenzie. « Ferroelectric glass nanocomposites ». Dans Optical Science, Engineering and Instrumentation '97, sous la direction de Bruce S. Dunn, John D. Mackenzie, Edward J. A. Pope, Helmut K. Schmidt et Masayuki Yamane. SPIE, 1997. http://dx.doi.org/10.1117/12.284135.

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Anderson, Benjamin J., Charles F. Zukoski, Michio Tokuyama, Irwin Oppenheim et Hideya Nishiyama. « Colloidal Glass Formation in Polymer Nanocomposites ». Dans COMPLEX SYSTEMS : 5th International Workshop on Complex Systems. AIP, 2008. http://dx.doi.org/10.1063/1.2897784.

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Popov, Ivan D., Yulia V. Kuznetsova, Alexander A. Sergeev, Svetlana V. Rempel et Andrey A. Rempel. « Optical properties of CdS-glass nanocomposites ». Dans ADVANCES IN ELECTRICAL AND ELECTRONIC ENGINEERING : FROM THEORY TO APPLICATIONS : Proceedings of the International Conference on Electrical and Electronic Engineering (IC3E 2017). Author(s), 2017. http://dx.doi.org/10.1063/1.4998114.

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Bloemer, Mark J., et Joseph W. Haus. « Polarizing properties of silver/glass nanocomposites ». Dans Optical Science, Engineering and Instrumentation '97. SPIE, 1997. http://dx.doi.org/10.1117/12.278985.

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Bar, Arun Kumar, Ranadip Kundu, Debasish Roy et Sanjib Bhattacharya. « Relaxation of Cu+2 in selenite glass nanocomposites ». Dans INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015) : Proceeding of International Conference on Condensed Matter and Applied Physics. Author(s), 2016. http://dx.doi.org/10.1063/1.4946175.

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Bar, Arun Kr, Ranadip Kundu, Debasish Roy et Sanjib Bhattacharya. « On the mechanical properties of selenite glass nanocomposites ». Dans INTERNATIONAL CONFERENCE ON CONDENSED MATTER AND APPLIED PHYSICS (ICC 2015) : Proceeding of International Conference on Condensed Matter and Applied Physics. Author(s), 2016. http://dx.doi.org/10.1063/1.4946447.

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Kang, Zhitao, Brent K. Wagner, Christopher J. Summers, Jason Nadler, Robert Rosson et Bernd Kahn. « Polymer and glass-matrix nanocomposites for scintillation applications ». Dans 2012 IEEE Nuclear Science Symposium and Medical Imaging Conference Record (NSS/MIC 2012) & Workshop on Room-Temperature Semiconductor X-Ray and Gamma-Ray Detectors. IEEE, 2012. http://dx.doi.org/10.1109/nssmic.2012.6551399.

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Sonal, Annu Sharma et Sanjeev Aggarwal. « Optical characterization of Ag-glass nanocomposites using Mie theory ». Dans PROCEEDINGS OF THE NATIONAL CONFERENCE ON RECENT ADVANCES IN CONDENSED MATTER PHYSICS : RACMP-2018. Author(s), 2019. http://dx.doi.org/10.1063/1.5097073.

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Bakshi, Mohammed Sohail, et Subhaschandra Kattimani. « Flexural behavior of nanoclay filled glass fiber/epoxy polymer nanocomposites ». Dans ADVANCES IN MECHANICAL DESIGN, MATERIALS AND MANUFACTURE : Proceeding of the Second International Conference on Design, Materials and Manufacture (ICDEM 2019). AIP Publishing, 2020. http://dx.doi.org/10.1063/5.0004157.

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Baranowska, Agata, Jan R. Dabrowski et Jan Dorosz. « Thermal and mechanical properties of bioactive glass fibers for nanocomposites ». Dans Photonics Applications in Astronomy, Communications, Industry, and High-Energy Physics Experiments 2018, sous la direction de Ryszard S. Romaniuk et Maciej Linczuk. SPIE, 2018. http://dx.doi.org/10.1117/12.2500271.

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