Download or read book Sorption and Transport of Gases and Vapors in Glassy Polymers written by Vinit Saxena and published by . This book was released on 1981 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Materials Science of Membranes for Gas and Vapor Separation written by Benny Freeman and published by John Wiley & Sons. This book was released on 2006-05-12 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: Materials Science of Membranes for Gas and Vapor Separation is a one-stop reference for the latest advances in membrane-based separation and technology. Put together by an international team of contributors and academia, the book focuses on the advances in both theoretical and experimental materials science and engineering, as well as progress in membrane technology. Special attention is given to comparing polymer and inorganic/organic separation and other emerging applications such as sensors. This book aims to give a balanced treatment of the subject area, allowing the reader an excellent overall perspective of new theoretical results that can be applied to advanced materials, as well as the separation of polymers. The contributions will provide a compact source of relevant and timely information and will be of interest to government, industrial and academic polymer chemists, chemical engineers and materials scientists, as well as an ideal introduction to students.
Download or read book Sorption and Transport of Gases in Glassy Polymers written by William John Koros and published by . This book was released on 1977 with total page 506 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Permeability of Plastic Films and Coatings written by Harold Hopfenberg and published by Springer Science & Business Media. This book was released on 2013-11-21 with total page 480 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transport of Gases and Vapors in Glassy Polymers written by Massachusetts Institute of Technology. Department of Chemical Engineering and published by . This book was released on 1963 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Multi component Transport of Gases and Vapors in Poly ethylene Terephthalate written by Preeti Chandra and published by . This book was released on 2006 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Transport of amorphous and semi-crystalline, oriented, annealed and non-annealed PET films has been studied using pure and mixed gas/vapor feeds to understand the influence of flavor molecules on the efficacy of the barrier material. Methanol has been used as the flavor molecule simulant, and pure methanol vapor sorption studies show swelling and relaxation effects in the polymer. Multi-component transport of O2/methanol and O2/CO℗Ơ2/methanol mixtures, performed at different activities of methanol, shows that vapor induced plasticization leads to increases in O2 and CO2 permeability. Annealed, semi-crystalline PET is shown to be most resistant to plasticization effects. It has been shown that the non-annealed film is less stable despite similar crystallinity as the annealed film due to the presence of orientation related stress in the material. Presence of crystals also restricts the chain motion, and helps suppress the plasticization effects. The results have been compared with the predictions of the dual mode model for multi-component mixtures. Plasticization effects at the high activities have been analyzed within the framework of the free volume theory. It has been proposed that only the densified domains of a glassy polymer be considered when evaluating fractional free volume change due to swelling in the polymer-penetrant system. The free volume parameter- BA has been evaluated for O2 and CO2 in PET and is found to be different from that for other high permeability polymers.
Download or read book Gas and Vapor Sorption and Permeation Properties of High Free Volume Glassy Polymers written by Anuraag Singh and published by . This book was released on 1997 with total page 602 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Gas Transport in Glassy Polymers written by Maria Grazia De Angelis and published by MDPI. This book was released on 2021-04-22 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Special Issue of Membranes focuses on several new aspects of fluid transport in glassy polymers, with application in relevant membrane separations such as gas purification, VOC removal and CO2 capture. In particular, the focus lies on novel experimental techniques, and detailed characterization of specific phenomena like polar and multicomponent interactions during transport. The properties of novel materials, such as mixed matrix membranes based on glassy polymers and different selective fillers, are also presented. A critical review of existing modeling approaches to describe the sorption and transport in glassy polymers suitable for membrane separations is provided, including both macroscopic and atomistic models, and relying both on the standard solution–diffusion process and on the facilitated transport mechanism.
Download or read book Membrane Materials for Gas and Separation written by Yuri Yampolskii and published by John Wiley & Sons. This book was released on 2017-03-20 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Si containing polymers have been instrumental in the development of membrane gas separation practices since the early 1970s. Their function is to provide a selective barrier for different molecular species, where selection takes place either on the basis of size or on the basis of physical interactions or both. Combines membrane science, organosilicon chemistry, polymer science, materials science, and physical chemistry Only book to consider polymerization chemistry and synthesis of Si-containing polymers (both glassy and rubbery), and their role as membrane materials Membrane operations present environmental benefits such as reduced waste, and recovered/recycled valuable raw materials that are currently lost to fuel or to flares
Download or read book Diffusion in Polymers written by John Crank and published by . This book was released on 1968 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthetic Membranes written by P.M. Bungay and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 735 pages. Available in PDF, EPUB and Kindle. Book excerpt: The chapters in this book are based upon lectures given at the NATO Advanced Study Institute on Synthetic Membranes (June 26-July 8, 1983, Alcabideche, Portugal), which provided an integrated presentation of syn thetic membrane science and technology in three broad areas. Currently available membrane formation mechanisms are reviewed, as well as the manner in which synthesis conditions can be controlled to achieve desired membrane structures. Membrane performance in a specific separa tionprocess involves complex phenomena, the understanding of which re quires a multidisciplinary approach encompassing polymer chemistry, phys ical chemistry, and chemical engineering. Progress toward a global understanding of membrane phenomena is described in chapters on the principles of membrane transport. The chapters on membrane processes and applications highlight both established and emerging membrane processes, and elucidate their myriad applications. It is our hope that this book will be an enduring, comprehensive compen dium of the state of knowledge in the field of synthetic membranes. We have been encouraged in that hope by numerous expressions of interest in the book, coming from a variety of potential users.
Download or read book Polymeric Gas Separation Membranes written by D.R. Paul and published by CRC Press. This book was released on 2018-05-04 with total page 635 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymeric Gas Separation Membranes is an outstanding reference devoted to discussing the separation of gases by membranes. An international team of contributors examines the latest findings of membrane science and practical applications and explores the complete spectrum of relevant topics from fundamentals of gas sorption and diffusion in polymers to vapor separation from air. They also compare membrane processes with other separation technologies. This essential book will be valuable to all practitioners and students in membrane science and technology.
Download or read book Diffusion of Penetrants in Polymers written by Matthew Tirrell and published by . This book was released on 1990 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt: Much effort has been expended in trying to understand and predict the unusual phenomena which can occur when initially glassy polymers are exposed to small-molecule gases, organic vapors or liquids. Sorption of the gas or vapor seems to occur at two distinctly different sorption sites (dual mode sorption), and influx of the penetrant leads to a non-Fickian front traveling at constant velocity (case-II diffusion). Because traditional measurement techniques such as sorption and permeation are complicated by these very phenomena which they try to explain, attempts to determine to what extent these very phenomena which they try to explain, attempts to determine to what extent these phenomena are governed by diffusive characteristics of glassy transport rather than by the interplay of diffusion and polymer relaxation have been frustrated. Instead, a method of observing diffusion which does not require penetrant transport across a surface and influx into the sample must be used. Keywords: Glassy polymers, Self-diffusion, Probe dye molecule, Vrentas-Duda free volume theory, Penetrants, Materials, Holographic Relaxation Spectroscopy(HRS), Polystyrene, Toluenes, DD1473. (JG).
Download or read book Sorption and Transport in Glassy Polymers written by Donald R. Paul and published by . This book was released on 1980 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Wenduine Harendijke written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sorption and Transport in Glassy Polymers Based on Papers Presented at a Symposium Sponsored by the Division of Organic Coatings and Plastics Chemistry at 176 Meeting of the American Chemical Society ACS Miami Beach Fla 1978 Part 2 written by American chemical society. Division of organic coatings and plastics chemistry and published by . This book was released on 1980 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Sorption and Transport in Glassy Polymers Based on Papers Presented at a Symposium Sponsored by the Division of Organic Coatings and Plastics Chemistry at 176 Meeting of the American Chemical Society ACS Miami Beach Fla 1978 Part 1 written by American chemical society. Division of organic coatings and plastics chemistry and published by . This book was released on 1980 with total page 107 pages. Available in PDF, EPUB and Kindle. Book excerpt:
