Polymer Degradation and Stabilization

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Author :
Publisher : Springer Science & Business Media
ISBN 13 : 3642693768
Total Pages : 129 pages
Book Rating : 4.6/5 (426 download)

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Book Synopsis Polymer Degradation and Stabilization by : W. L. Hawkins

Download or read book Polymer Degradation and Stabilization written by W. L. Hawkins and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: The development of polymers as an important class of material was inhibited at the first by the premature failure of these versatile compounds in many applications. The deterioration of important properties of both natural and synthetic polymers is the result of irreversible changes in composition and structure of polymers molecules. As a result of these reactions, mechanical, electrical and/or aesthetic properties are degraded beyond acceptable limits. It is now generally recognized that stabilization against degradation is necessary if the useful life of polymers is to be extended sufficiently to meet design requirements for long-term applications. Polymers degrade by a wide variety of mechanisms, several of which affect all polymers through to varying degree. This monograph will concentrate on those degradation mechanisms which result from reactions of polymers with oxygen in its various forms and which are accelerated by heat and/or radiation. Those stabilization mechanisms are discussed which are based on an understanding of degradation reaction mechanisms that are reasonably well established. The stabilization of polymers is still undergoing a transition from an art to a science as mechanisms of degradation become more fully developed. A scientific approach to stabilization can only be approached when there is an understanding of the reactions that lead to degradation. Stabilization against biodegradation and burning will not be discussed since there is not a clear understanding of how polymers degrade under these conditions.

Polymer Photodegradation

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Author :
Publisher : Springer Science & Business Media
ISBN 13 : 9401112746
Total Pages : 679 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Polymer Photodegradation by : J.F. Rabek

Download or read book Polymer Photodegradation written by J.F. Rabek and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 679 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the last two decades, the production of polymers and plastics has been increasing rapidly. In spite of developing new polymers and polymeric materials, only 40~60 are used commercially on a large scale. It has been estimated that half of the annual production of polymers is employed outdoors. The photochemical instability of most polymers limits their outdoor application as they are photodegraded quickly over periods from months to a few years. To the despair of technologists and consumers alike, photodegradation and environmental ageing of polymers occur much faster than can be expected from knowledge collected in laboratories. In order to improve polymer photostability there has been a very big effort during the last 30 years to understand the mechanisms involved in photodegradation and environmental ageing. This book represents the author's attempt, based on his 25 years' experience in research on photodegradation and photo stabilization, to collect and generalize a number of available data on the photodegradation of polymers. The space limitation and the tremendous number of publications in the past two decades have made a detailed presentation of all important results and data difficult. The author apologizes to those whose work has not been quoted or widely presented in this book. Because many published results are very often contradictory, it has been difficult to present a fully critical review of collected knowledge, without antagonizing authors. For that reason, all available theories, mechanisms and different suggestions have been presented together, and only practice can evaluate which of them are valid.

Mechanisms of Polymer Degradation and Stabilisation

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Publisher : Springer Science & Business Media
ISBN 13 : 9401138389
Total Pages : 336 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Mechanisms of Polymer Degradation and Stabilisation by : G. Scott

Download or read book Mechanisms of Polymer Degradation and Stabilisation written by G. Scott and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this publication is two-fold. In the first place it is intended to review progress in the development of practical stabilising systems for a wide range of polymers and applications. A complemen tary and ultimately more important objective is to accommodate these practical developments within the framework of antioxidant theory, since there can be little question that further major advances in the practice of stabilisation technology will only be possible on a firm mechanistic foundation. With the continual increase in the number of commercial anti oxidants and stabilisers, often functioning by mechanisms not even considered ten years ago, there is a need for a general theory which will allow the potential user to predict the performance of a particular antioxidant structure under specific practical conditions. Any such predictive tool must involve a simplified kinetic approach to inhibited oxidation and, in Chapter 1, Denisov outlines a possible mechanistic approach with the potential to predict the most useful antioxidant to use and the limits of its usefulness. In Chapter 2, Schwetlick reviews the current state of knowledge on the antioxidant mechanisms of the phosphite esters with particular emphasis on their catalytic peroxidolytic activity. Dithiophosphate v vi PREFACE derivatives show a similar behaviour but for quite different reasons and, in Chapter 3, AI-Malaika reviews information available from analytical studies, particularly using 31p_NMR spectroscopy, to elucid ate the complex chemistry that leads to the formation of the antioxidant -active agents.

Thermal Degradation of Polymeric Materials

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Author :
Publisher : iSmithers Rapra Publishing
ISBN 13 : 9781859574980
Total Pages : 324 pages
Book Rating : 4.5/5 (749 download)

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Book Synopsis Thermal Degradation of Polymeric Materials by : Krzysztof Pielichowski

Download or read book Thermal Degradation of Polymeric Materials written by Krzysztof Pielichowski and published by iSmithers Rapra Publishing. This book was released on 2005 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the thermal degradation of polymers is of paramount importance for developing a rational technology of polymer processing and higher-temperature applications. Controlling degradation requires understanding of many different phenomena, including chemical mechanisms, the influence of polymer morphology, the complexities of oxidation chemistry, and the effects of stabilisers, fillers and other additives. This book offers a wealth of information for polymer researchers and processors requiring an understanding of the implications of thermal degradation on material and product performance.

Photodegradation of Polymers

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Author :
Publisher : Springer Science & Business Media
ISBN 13 : 3642800904
Total Pages : 222 pages
Book Rating : 4.6/5 (428 download)

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Book Synopsis Photodegradation of Polymers by : Jan F. Rabek

Download or read book Photodegradation of Polymers written by Jan F. Rabek and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 222 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book on physical characteristics and practical aspects of polymer photodegradation Rabek emphasizes the experimental work on the subject. The most important feature of the book is the physical interpretation of polymer degradation, e.g. mechanism of UV/light absorption, formation of excited states, energy transfer mechanism, kinetics, dependence on physical properties of macromolecules and polymer matrices, formation of mechanical defects, practics during environmental ageing. He includes also some aspects of polymer photodegradation in environmental and space condition.

Polymer Degradation Mechanisms

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Author :
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.3/5 ( download)

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Book Synopsis Polymer Degradation Mechanisms by : United States. National Bureau of Standards

Download or read book Polymer Degradation Mechanisms written by United States. National Bureau of Standards and published by . This book was released on 1953 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fundamentals of Polymer Degradation and Stabilization

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Author :
Publisher : Springer Science & Business Media
ISBN 13 : 9781851667734
Total Pages : 218 pages
Book Rating : 4.6/5 (677 download)

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Book Synopsis Fundamentals of Polymer Degradation and Stabilization by : N.S. Allen

Download or read book Fundamentals of Polymer Degradation and Stabilization written by N.S. Allen and published by Springer Science & Business Media. This book was released on 1992-10-31 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past decade, the field of polymer degradation and stabilization has become a subject of central importance in polymer science and technology. This book provides a fundamental source of information designed for those with only a basic understanding of the background of the field.

Polymer Degradation and Stabilisation

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Author :
Publisher : CUP Archive
ISBN 13 : 9780521357975
Total Pages : 236 pages
Book Rating : 4.3/5 (579 download)

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Book Synopsis Polymer Degradation and Stabilisation by : Norman Grassie

Download or read book Polymer Degradation and Stabilisation written by Norman Grassie and published by CUP Archive. This book was released on 1988-04-14 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of polymer degradation and stabilisation is of considerable practical importance as the industrial uses of polymeric materials continue to expand. In this book, the authors lucidly relate technological phenomena to the chemistry and physics of degradation and stabilisation processes. Degradation embraces a variety of technologically important phenomena ranging from relatively low temperature processes such as 'weathering' of plastics, 'fatigue' of rubbers through the processing of polymers in shearing mixers to very high temperature processes such as flammability and ablation. All these technological phenomena have in common certain basic chemical reactions. Thus 'weathering' has its roots in photo-oxidation, 'fatigue' and melt-degradation in mechano-oxidation and flammability, and ablation in ablation in pyrolysis and vapour phase oxidation.

Degradable Polymers

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Publisher : Springer Science & Business Media
ISBN 13 : 9401105715
Total Pages : 284 pages
Book Rating : 4.4/5 (11 download)

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Book Synopsis Degradable Polymers by : G. Scott

Download or read book Degradable Polymers written by G. Scott and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Few scientific developments in recent years have captured the popular imagination like the subject of'biodegradable' plastics. The reasons for this are complex and lie deep in the human subconscious. Discarded plastics are an intrusion on the sea shore and in the countryside. The fact that nature's litter abounds in the sea and on land is acceptable because it is biodegradable - even though it may take many years to be bioassimilated into the ecosystem. Plastics litter is not seen to be biodegradable and is aesthetically unacceptable because it does not blend into the natural environment. To the environmentally aware but often scientifically naive, biodegradation is seen to be the ecologically acceptable solution to the problem of plastic packaging waste and litter and some packaging manufacturers have exploited the 'green' consumer with exaggerated claims to 'environmentally friendly' biodegradable packaging materials. The principles underlying environmental degradation are not understood even by some manufacturers of 'biodegradable' materials and the claims made for them have been categorized as 'deceptive' by USA legislative authorities. This has set back the acceptance of plastics with controlled biodegradability as part of the overall waste and litter control strategy. At the opposite end of the commercial spectrum, the polymer manufactur ing industries, through their trade associations, have been at pains to discount the role of degradable materials in waste and litter management. This negative campaign has concentrated on the supposed incompatibility of degradable plastics with aspects of waste management strategy, notably materials recycling.

Electrical Degradation and Breakdown in Polymers

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Author :
Publisher : IET
ISBN 13 : 9780863411960
Total Pages : 630 pages
Book Rating : 4.4/5 (119 download)

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Book Synopsis Electrical Degradation and Breakdown in Polymers by : Len A. Dissado

Download or read book Electrical Degradation and Breakdown in Polymers written by Len A. Dissado and published by IET. This book was released on 1992 with total page 630 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is in five parts: Part I introduces the physical and chemical structure of polymers and their breakdown; Part II reviews electrical degradation in polymers, and Part III reviews conduction and deterministic breakdown in solids. Part IV discusses the stochastic nature of break-down from empirical and modelling viewpoints, and Part V indicates practical implications and strategies for engineers. Much of the discussion applies to non-crystalline materials generally.

Reactions and Mechanisms in Thermal Analysis of Advanced Materials

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 1119117704
Total Pages : 660 pages
Book Rating : 4.1/5 (191 download)

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Book Synopsis Reactions and Mechanisms in Thermal Analysis of Advanced Materials by : Atul Tiwari

Download or read book Reactions and Mechanisms in Thermal Analysis of Advanced Materials written by Atul Tiwari and published by John Wiley & Sons. This book was released on 2015-07-29 with total page 660 pages. Available in PDF, EPUB and Kindle. Book excerpt: Strong bonds form stronger materials. For this reason, the investigation on thermal degradation of materials is a significantly important area in research and development activities. The analysis of thermal stability can be used to assess the behavior of materials in the aggressive environmental conditions, which in turn provides valuable information about the service life span of the materiel. Unlike other books published so far that have focused on either the fundamentals of thermal analysis or the degradation pattern of the materials, this book is specifically on the mechanism of degradation of materials. The mechanism of rapturing of chemical bonds as a result of exposure to high-temperature environment is difficult to study and resulting mechanistic pathway hard to establish. Limited information is available on this subject in the published literatures and difficult to excavate. Chapters in this book are contributed by the experts working on thermal degradation and analysis of the wide variety of advanced and traditional materials. Each chapter discusses the material, its possible application, behavior of chemical entities when exposed to high-temperature environment and mode and the mechanistic route of its decomposition. Such information is crucial while selecting the chemical ingredients during the synthesis or development of new materials technology.

Introduction to Bioplastics Engineering

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Author :
Publisher : William Andrew
ISBN 13 : 0323394078
Total Pages : 302 pages
Book Rating : 4.3/5 (233 download)

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Book Synopsis Introduction to Bioplastics Engineering by : Syed Ali Ashter

Download or read book Introduction to Bioplastics Engineering written by Syed Ali Ashter and published by William Andrew. This book was released on 2016-03-29 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: Introduction to Bioplastics Engineering is a practical, user-friendly reference for plastics engineers working with biopolymers and biodegradable plastics that addresses topics that are required for the successful development of cohesive bioplastic products. While there has been considerable demand for the use of bioplastics in industry, processing these bioplastics is a big challenge. The book provides plastics engineers and researchers with a fundamental, practical understanding of the differences between bioplastics and biodegradable polymers, along with guidance on the different methods used to process bioplastics. The book also covers additives and modifiers for biopolymers and their effect on properties. Examples include commercial applications of bioplastics, current bioplastics being developed, and future trends in the industry. This enables engineers, researchers, technicians, and students to understand the decisive relationship between different processing techniques, morphology, mechanical properties, and the further applications of bio-based polymers. The book presents a true engineering approach for the industry on the processing of biopolymers and biodegradable plastics – discussing the ease of use of the polymer, mechanical and thermal properties, rate of biodegradation in particular environments, and pros and cons of particular bioplastics. Enables engineers, researchers, technicians, and students to understand the decisive relationship between different processing techniques, morphology, mechanical properties, and the further applications of bio-based polymers. Covers additives and modifiers for biopolymers and their effect on properties Includes examples that illustrate the commercial applications of bioplastics, current bioplastics being developed, and future trends in the industry

Handbook of Biodegradable Polymers

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Author :
Publisher : John Wiley & Sons
ISBN 13 : 3527635823
Total Pages : 65 pages
Book Rating : 4.5/5 (276 download)

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Book Synopsis Handbook of Biodegradable Polymers by : Andreas Lendlein

Download or read book Handbook of Biodegradable Polymers written by Andreas Lendlein and published by John Wiley & Sons. This book was released on 2011-09-19 with total page 65 pages. Available in PDF, EPUB and Kindle. Book excerpt: A comprehensive overview of biodegradable polymers, covering everything from synthesis, characterization, and degradation mechanisms while also introducing useful applications, such as drug delivery systems and biomaterial-based regenerative therapies. An introductory section deals with such fundamentals as basic chemical reactions during degradation, the complexity of biological environments and experimental methods for monitoring degradation processes. The result is a reliable reference source for those wanting to learn more about this important class of polymer materials, as well as scientists in the field seeking a deeper insight.

Polymer Degradation Mechanisms

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Author :
Publisher :
ISBN 13 :
Total Pages : 280 pages
Book Rating : 4.:/5 (989 download)

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Book Synopsis Polymer Degradation Mechanisms by :

Download or read book Polymer Degradation Mechanisms written by and published by . This book was released on 1953 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Polymer Degradation Mechanisms

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Author :
Publisher :
ISBN 13 :
Total Pages : 292 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Polymer Degradation Mechanisms by : United States. National Bureau of Standards

Download or read book Polymer Degradation Mechanisms written by United States. National Bureau of Standards and published by . This book was released on 1953 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Handbook of Biodegradable Polymers

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Author :
Publisher : Walter de Gruyter GmbH & Co KG
ISBN 13 : 150151198X
Total Pages : 716 pages
Book Rating : 4.5/5 (15 download)

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Book Synopsis Handbook of Biodegradable Polymers by : Catia Bastioli

Download or read book Handbook of Biodegradable Polymers written by Catia Bastioli and published by Walter de Gruyter GmbH & Co KG. This book was released on 2020-03-09 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt: This handbook covers characteristics, processability and application areas of biodegradable polymers, with key polymer family groups discussed. It explores the role of biodegradable polymers in different waste management practices including anaerobic digestion, and considers topics such as the different types of biorefineries for renewable monomers used in producing the building blocks for biodegradable polymers.

Polymer Degradation and Stabilization

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Author :
Publisher :
ISBN 13 : 9780387128511
Total Pages : 119 pages
Book Rating : 4.1/5 (285 download)

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Book Synopsis Polymer Degradation and Stabilization by : W. Lincoln Hawkins

Download or read book Polymer Degradation and Stabilization written by W. Lincoln Hawkins and published by . This book was released on 1984 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: