Transport Properties In Polymer Nanocomposites
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Transport Properties In Polymer Nanocomposites
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Author :
language : en
Publisher:
Release Date : 2009
Transport Properties In Polymer Nanocomposites written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009 with Nanostructured materials categories.
Transport Properties In Polymer Nanocomposites Ii
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Author :
language : en
Publisher:
Release Date :
Transport Properties In Polymer Nanocomposites Ii written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.
Transport Properties Of Polymeric Membranes
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Author : Sabu Thomas
language : en
Publisher: Elsevier
Release Date : 2017-11-20
Transport Properties Of Polymeric Membranes written by Sabu Thomas and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-11-20 with Science categories.
Transport Properties of Polymeric Membranes is an edited collection of papers that covers, in depth, many of the recent technical research accomplishments in transport characteristics through polymers and their applications. Using the transport through polymer membranes method leads to high separation efficiency, low running costs, and simple operating procedures compared to conventional separation methods. This book provides grounding in fundamentals and applications to give you all the information you need on using this method. This book discusses the different types of polymer, their blends, composites, nanocomposites and their applications in the field of liquid, gas and vapor transport. Some topics of note include modern trends and applications of polymer nanocomposites in solvent, vapor and gas transport; fundamentals and measurement techniques for gas and vapor transport in polymers; and transport properties of hydrogels. This handpicked selection of topics, and the combined expertise of contributors from global industry, academia, government and private research organizations, make this book an outstanding reference for anyone involved in the field of polymer membranes. Presents current trends in the field of transport of liquid, gas and vapor through various polymeric systems Features case studies focused on industrial applications of membrane technology, along with fundamentals of transport and materials Helps readers quickly look up a particular technique to learn key points, capabilities and drawbacks
Transport Properties In Polymer Nanocomposites
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Author :
language : en
Publisher:
Release Date : 2008
Transport Properties In Polymer Nanocomposites written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008 with Composite materials categories.
Transport Properties In Polymer Nanocomposites Ii
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Author : S. Nazarenko
language : en
Publisher:
Release Date : 2011
Transport Properties In Polymer Nanocomposites Ii written by S. Nazarenko and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Nanocomposites (Materials) categories.
Transport Properties Of Nanocomposites
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Author : Vinay Narayanunni
language : en
Publisher:
Release Date : 2010
Transport Properties Of Nanocomposites written by Vinay Narayanunni and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010 with categories.
Transport Properties of Nanocomposites were studied in this work. A Monte Carlo technique was used to model the percolation behavior of fibers in a nanocomposite. Once the percolation threshold was found, the effect of fiber dimensions on the percolation threshold in the presence and absence of polymer particles was found. The number of fibers at the percolation threshold in the presence of identically shaped polymer particles was found to be considerably lower than the case without particles. Next, the polymer particles were made to be of different shapes. The shapes and sizes of the fibers, as well as the polymers, were made the same as those used to obtain experimental data in literature. The simulation results were compared to experimental results, and vital information regarding the electrical properties of the fibers and fiberfiber junctions was obtained for the case of two stabilizers used during composite preparation? Gum Arabic (GA) and Poly(3,4-ethylenedioxythiophene) poly(styrenesulfonate) (PEDOT:PSS). In particular, the fiber-fiber connection resistances, in the case of these 2 stabilizers, were obtained. A ratio between the fiber path resistance and the total connection resistance, giving the relative magnitude of these resistances in a composite, was defined. This ratio was found through simulations for different fiber dimensions, fiber types and stabilizers. Trends of the ratio with respect to composite parameters were observed and analyzed, and parameters to be varied to get desired composite properties were discussed. This study can serve as a useful guide to choose design parameters for composite preparation in the future. It can also be used to predict the properties of composites having known fiber dimensions, fiber quality and stabilizing agents.
Microstructure And Transport Properties Of Electrically Conductive Polymer Nanocomposites For Bipolar Plates And Dual Conducting Membranes
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Author : Aswin Prathap Pitchiya
language : en
Publisher:
Release Date : 2022
Microstructure And Transport Properties Of Electrically Conductive Polymer Nanocomposites For Bipolar Plates And Dual Conducting Membranes written by Aswin Prathap Pitchiya and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022 with Carbon composites categories.
Electrical And Thermal Transport Properties Of Polymer Carbonaceous Nanostructured Composites
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Author : Rakibul Islam
language : en
Publisher:
Release Date : 2016
Electrical And Thermal Transport Properties Of Polymer Carbonaceous Nanostructured Composites written by Rakibul Islam and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Conducting polymer nanocomposites exhibit for instance interesting thermoelectric properties which make them a promising, inexpensive, clean and efficient solution for heat waste harvesting. This thesis reports on properties of polyaniline (PANI) nanostructured composites as a function of various carbonaceous nano-fillers content such as carbon nanotubes (1-D), and 2-D reduced graphene oxide (RGO). SEM, TEM, X-ray diffraction, and Raman spectroscopy have been employed to investigate their structure and morphology. Electrical and thermal conductivity, Seebeck coefficient, and thermoelectric figure of merit (ZT) have been systematically performed. An important increase of electrical conductivity has been observed with increasing filler fraction whereas thermal conductivity only slightly increases, which enhances ZT of several orders of magnitude. Fillers dimension effect is evidenced, but, whatever this dimension, it is shown that, in contrast with thermal conductivity, electrical conductivity follows a percolation behavior through 2D conduction process. This behavior is also observed in the case of the volumetric heat capacity of PANI/RGO nanohybrids which make them potential candidates as high heat capacitive materials. For the first time their heat storage factor is assessed with a new analytical model proposed in this study. The PANI/RGO samples have also been investigated by Dielectric Spectroscopy at different temperatures. Results evidence an interesting charge trapping phenomenon occurring at the PANI/RGO interface which might find promising applications in supercapacitors or gate memory devices.
Interfacial And Transport Properties Of Nanoconstrained Inorganic And Organic Materials
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Author : Lakshmi Suhasini Kocherlakota
language : en
Publisher:
Release Date : 2013
Interfacial And Transport Properties Of Nanoconstrained Inorganic And Organic Materials written by Lakshmi Suhasini Kocherlakota and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Nanoscale constraints impact the material properties of both organic and inorganic systems. The systems specifically studied here are (i) nanoconstrained polymeric systems, poly(l-trimethylsilyl-1-propyne) (PTMSP) and poly(ethylene oxide) (PEO) relevant to gas separation membranes (ii) Zwitterionic polymers poly(sulfobetaine methacrylate)(pSBMA), poly(carboxybetaine acrylamide) (pCBAA), and poly(oligo(ethylene glycol) methyl methacrylate) (PEGMA) brushes critical for reducing bio-fouling (iii) Surface properties of N-layer graphene sheets. Interfacial constraints in ultrathin poly(l-trimethylsilyl-1-propyne) (PTMSP) membranes yielded gas permeabilities and CO2/helium selectivities that exceed bulk PTMSP membrane transport properties by up to three-fold for membranes of submicrometer thickness. Indicative of a free volume increase, a molecular energetic mobility analysis (involving intrinsic friction analysis) revealed enhanced methyl side group mobilities in thin PTMSP membranes with maximum permeation, compared to bulk films. Aging studies conducted over the timescales relevant to the conducted experiments signify that the free volume states in the thin film membranes are highly unstable in the presence of sorbing gases such as CO2. To maintain this high free volume configuration of polymer while improving the temporal stability an "inverse" architecture to conventional polymer nanocomposites was investigated, in which the polymer phase of PTMSP and PEO were interfacially and dimensionally constrained in nanoporous anodic aluminum oxide (AAO) membranes. While with this architecture the benefits of nanocomposite and ultrathin film membranes of PTMSP could be reproduced and improved upon, also the temporal stability could be enhanced substantially. The PEO-AAO nanocomposite membranes also revealed improved gas selectivity properties of CO2 over helium. In the thermal transition studies of zwitterionic pSBMA brushes a reversible critical transition temperature of 60 oC in 27 nm films was evidenced, indicating changes in molecular conformations with respect to the temperature. pCBAA and pEGMA brushes displayed no thermal transitions, suggesting that the molecular conformations of these systems were insensitive to temperature in the investigated regime. The surface energy of a dimensionally constrained inorganic system, graphene is studied via local Hamaker constant determination from a single graphene layer to bulk graphite. Intrinsic friction scattering analysis of dipolar fluctuations of the Van der Waals interactions between an atomic force microscopy tip and graphene layers revealed a four-fold reduction in the surface energy from bulk HOPG to graphene. A numerical analysis based on electron energy loss spectroscopy confirms quantitatively the results.
Transport Properties In Polymer
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Author : J. Stastna
language : en
Publisher:
Release Date : 1995
Transport Properties In Polymer written by J. Stastna and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with categories.