Glass Transition Of Green Polymers

Author : Tatsuko Hatakeyama
Publisher : Nova Science Publishers
ISBN 13 : 9781536192872
Total Pages : 349 pages
Book Rating : 4.72/5 ( download)

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Download or read book Glass Transition of Green Polymers written by Tatsuko Hatakeyama and published by Nova Science Publishers. This book was released on 2021-02-11 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: In nature, green polymers (natural polymers) in plants and animals always coexist with water. The characteristic features of polymers organized in nature are difficult to understand without water. Specific features of green polymers are characterised via interaction with water molecules which strongly interact with the hydrophilic group of polymers. Molecular motion of the main chain of polysaccharides, whether extracted from wood, fungi, seaweed, or bacteria, is considerably enhanced in the presence of water. Not only in crystalline polysaccharides but also amorphous lignin, the effect of water on molecular motion is clearly observed by various experimental techniques. When the molecular motion of green polymers is investigated in the presence of water, molecular rearrangement occurs by the introduction of water into the system, and the higher-order structure is rearranged during molecular movement by heating conditions. Phase transition behaviour of water molecules is also affected in the presence of hydrophilic polymers, such as polysaccharides. Molecular enhancement of water molecules and hydrophilic polymers cooperate with each other and phase transition behaviour of the above system also corresponds to the above motion. Even the first-order phase transition of water is affected in the presence of polysaccharides. When glass transition behaviour of the natural polymer-water system is investigated, it is important to take into consideration the fact that the structural change of both components has necessarily taken place.In this book, the molecular relaxation of green polymers, especially the thermodynamic concept of green polymers and the bound water, will be described in Chapter 2. Various techniques to measure the glass transition of green polymers in dry and wet conditions are explained in Chapter 3. Special attention is paid to sample handling for controlling water content. Glass transition behaviour of various polysaccharides and model compounds is described in Chapter 4. An explanation of lignin and its synthetic model polymers is also given in Chapter 5.

Author : Tatsuko Hatakeyama
Publisher :
ISBN 13 : 9781536192148
Total Pages : pages
Book Rating : 4.47/5 ( download)

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Download or read book Glass Transition of Green Polymers written by Tatsuko Hatakeyama and published by . This book was released on 2021-04-25 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: In nature, green polymers (natural polymers) in plants and animals always coexist with water. The characteristic features of polymers organized in nature are difficult to understand without water. Specific features of green polymers are characterised via interaction with water molecules which strongly interact with the hydrophilic group of polymers. Molecular motion of the main chain of polysaccharides, whether extracted from wood, fungi, seaweed, or bacteria, is considerably enhanced in the presence of water. Not only in crystalline polysaccharides but also amorphous lignin, the effect of water on molecular motion is clearly observed by various experimental techniques. When the molecular motion of green polymers is investigated in the presence of water, molecular rearrangement occurs by the introduction of water into the system, and the higher-order structure is rearranged during molecular movement by heating conditions. Phase transition behaviour of water molecules is also affected in the presence of hydrophilic polymers, such as polysaccharides. Molecular enhancement of water molecules and hydrophilic polymers cooperate with each other and phase transition behaviour of the above system also corresponds to the above motion. Even the first-order phase transition of water is affected in the presence of polysaccharides. When glass transition behaviour of the natural polymer-water system is investigated, it is important to take into consideration the fact that the structural change of both components has necessarily taken place.In this book, the molecular relaxation of green polymers, especially the thermodynamic concept of green polymers and the bound water, will be described in Chapter 2. Various techniques to measure the glass transition of green polymers in dry and wet conditions are explained in Chapter 3. Special attention is paid to sample handling for controlling water content. Glass transition behaviour of various polysaccharides and model compounds is described in Chapter 4. An explanation of lignin and its synthetic model polymers is also given in Chapter 5.

Author : Tatsuko Hatakeyama
Publisher : Springer Science & Business Media
ISBN 13 : 1402023545
Total Pages : 336 pages
Book Rating : 4.45/5 ( download)

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Download or read book Thermal Properties of Green Polymers and Biocomposites written by Tatsuko Hatakeyama and published by Springer Science & Business Media. This book was released on 2006-01-27 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: From the reviews: "...This very well written new book is recommended to academic and industrial researchers and specialists interested in green polymers and mainly in their thermal properties...This new and opportune book covers some important properties of green polymers and bio-composites." (D. Feldman, Concordia University, Montreal, Canada)

Author : Rickey J. Seyler
Publisher : ASTM International
ISBN 13 : 080311995X
Total Pages : 310 pages
Book Rating : 4.56/5 ( download)

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Download or read book Assignment of the Glass Transition written by Rickey J. Seyler and published by ASTM International. This book was released on 1994 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Author : E. S. Stevens
Publisher : Princeton University Press
ISBN 13 : 0691214174
Total Pages : 249 pages
Book Rating : 4.77/5 ( download)

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Download or read book Green Plastics written by E. S. Stevens and published by Princeton University Press. This book was released on 2020-06-16 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Plastics are everywhere. Bags, bank cards, bottles, and even boats can all be made of this celebrated but much-maligned material. Yet most of us know next to nothing about plastics. We do know that they are practical and cheap--but they also represent a huge environmental problem, for they literally take ages to decompose. In this engaging book, E.S. Stevens tells us everything we have always wondered about plastics and of the efforts, in America, Europe, and Asia, to develop a new breed of environmentally friendly plastics. He points to a possible future where plastics will no longer be made of petroleum, but of plants. The first two chapters assess the increased use of plastics as a relatively new alternative to other materials. The third chapter introduces us to their impact on the environment and strategies for their disposal or recycling. The next two chapters cover basic concepts and terms used in polymer sciences and provide some basic chemistry. With these fundamentals in tow, the author compares how petroleum-based and biological polymers are made, and the various ways in which they decompose. He acquaints readers with the emerging technologies, their commercial viability, and their future. Finally, instructions are given for preparing basic bioplastics using readily available materials. Nonspecialists will find Green Plastics a concise introduction to this exciting interdisciplinary topic--an introduction otherwise not available. For students it provides easy entry to an area of science with wide appeal and current importance; for teachers, excellent background reading for courses in various sciences. The prospect of depleted fossil fuel supplies, and the potential benefits of bioplastics to the environment and to rural areas that could supply the raw materials, make this book a compelling presentation of a subject whose time has come.

Author : Avraam I. Isayev
Publisher : John Wiley & Sons
ISBN 13 : 3527653996
Total Pages : 528 pages
Book Rating : 4.97/5 ( download)

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Download or read book Encyclopedia of Polymer Blends, Volume 3 written by Avraam I. Isayev and published by John Wiley & Sons. This book was released on 2016-06-07 with total page 528 pages. Available in PDF, EPUB and Kindle. Book excerpt: A complete and timely overview of the topic, this Encyclopedia imparts knowledge of fundamental principles and their applications for academicians, scientists and researchers, while informing engineers, industrialists and entrepreneurs of the current state of the technology and its utilization. The most comprehensive source on polymer blends available on the market Offers a complete and timely overview of the topic Each article presents up to date research & development on a topic and its basic principles and applications, integrates case studies, laboratory and pilot plant experiments, and gives due reference to published and patented literature Equips academics, scientists and researchers with knowledge of fundamentals principles and their applications, and informs the engineers, industrialists and entrepreneurs about the state of the art technology and its applications

Author : Andreea Irina Barzic
Publisher : CRC Press
ISBN 13 : 1000095355
Total Pages : 379 pages
Book Rating : 4.57/5 ( download)

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Download or read book Imidic Polymers and Green Polymer Chemistry written by Andreea Irina Barzic and published by CRC Press. This book was released on 2021-03-25 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews the latest research, development, and future potential of polyimides and green polymer chemistry. It combines the major interdisciplinary research in this area. Polymers with imidic structure, known as polyimides, are widely investigated owing to their practical implications in numerous industrial sectors. The book explains why polyimides offer versatility unparalleled in comparison to most other classes of macromolecules. In addition, developments in green polymer chemistry in this area have been stimulated by health and environmental concerns, interest in sustainability, desire to decrease the dependence on petroleum, and opportunities to design and produce “green” products and processes. Major advances include new uses of green processing methodologies, and green polymeric products. Imidic Polymers and Green Polymer Chemistry: New Technology and Developments in Process and Product is targeted to scientists, engineers, and students who are involved or interested in green polymer chemistry and imidic polymers. This book will serve as a valuable reference for those with an interest in synthesis of polyimides and the chemistry and physical chemistry of polyimide compounds.

Author : Inamuddin
Publisher : CRC Press
ISBN 13 : 1315354004
Total Pages : 591 pages
Book Rating : 4.02/5 ( download)

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Download or read book Green Polymer Composites Technology written by Inamuddin and published by CRC Press. This book was released on 2016-11-03 with total page 591 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a comprehensive introduction to "green" or environmentally friendly polymer composites developed using renewable polymers of natural origin such as starch, lignin, cellulose acetate, poly-lactic acid (PLA), polyhydroxylalkanoates (PHA), polyhydroxylbutyrate (PHB), etc., and the development of modern technologies for preparing green composites with various applications. The book also discusses major applications of green polymer composites in industries such as medicine, biotechnology, fine chemicals and engineering.

Author : Toyoyuki Kitamura
Publisher : Newnes
ISBN 13 : 0124071708
Total Pages : 401 pages
Book Rating : 4.04/5 ( download)

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Download or read book Liquid Glass Transition written by Toyoyuki Kitamura and published by Newnes. This book was released on 2012-12-31 with total page 401 pages. Available in PDF, EPUB and Kindle. Book excerpt: A glass is disordered material like a viscous liquid and behaves mechanically like a solid. A glass is normally formed by supercooling the viscous liquid fast enough to avoid crystallization, and the liquid-glass transition occurs in diverse manners depending on the materials, their history, and the supercooling processes, among other factors. The glass transition in colloids, molecular systems, and polymers is studied worldwide. This book presents a unified theory of the liquid-glass transition on the basis of the two band model from statistical quantum field theory associated with the temperature Green’s function method. It is firmly original in its approach and will be of interest to researchers and students specializing in the glass transition across the physical sciences. Examines key theoretical problems of the liquid-glass transition and related phenomena Clarifies the mechanism and the framework of the liquid-glass transition

Author : Shiro Kobayashi
Publisher : Springer
ISBN 13 : 9811338132
Total Pages : 389 pages
Book Rating : 4.37/5 ( download)

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Download or read book Enzymatic Polymerization towards Green Polymer Chemistry written by Shiro Kobayashi and published by Springer. This book was released on 2019-04-04 with total page 389 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book comprehensively covers researches on enzymatic polymerization and related enzymatic approaches to produce well-defined polymers, which is valuable and promising for conducting green polymer chemistry. It consists of twelve chapters, including the following topics: The three classes of enzymes, oxidoreductases, transferases and hydrolases, have been employed as catalysts for enzymatic polymerization and modification; Well-defined polysaccharides are produced by enzymatic polymerization catalyzed by hydrolases and transferases; Hydrolase-catalyzed polycondensation and ring-opening polymerization are disclosed to produce a variety of polyesters; Polyesters are synthesized by in-vivo acyltransferase catalysis produced by microorganisms; Enzymatic polymerization catalyzed by appropriate enzymes also produces polypeptides and other polymers; Poly(aromatic)s are obtained by enzymatic polymerization catalyzed by oxidoreductases and their model complexes; Such enzymes also induce oxidative polymerization of vinyl monomers; Enzymatic modification of polymers is achieved to produce functionalized polymeric materials; The enzymatic polymerization is a green process with non-toxic catalysts, high catalyst efficiency, green solvents and renewable starting materials, and minimal by-products; Moreover, renewable resources like biomass are potentially employed as a starting substrate, producing useful polymeric materials. This book is not only educative to young polymer chemists like graduate students but also suggestive to industrial researchers, showing the importance of the future direction of polymer synthesis for maintaining a sustainable society.