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Author : American Chemical Society,Norbert A. J. Platzer,American Chemical Society. Division of Industrial and Engineering Chemistry
Publisher : Unknown
Page : 128 pages
File Size : 49,5 Mb
Release : 1967
Category : Electronic
ISBN : OCLC:263526689
Author : Anonim
Publisher : Unknown
Page : 332 pages
File Size : 51,7 Mb
Release : 1968
Category : Electronic
ISBN : OCLC:925701275
Author : M. B. Neiman
Publisher : Springer Science & Business Media
Page : 374 pages
File Size : 44,5 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9781461585497
The need for a broad development of the production of polymer ma terials has become evident. All these materials are subject to various types of aging (destruction); hence, stabilizers which permit the stor age, reprocessing, and use of polymer materials without any appreci able change in their properties must be introduced into them. In recent years, this problem of stabilizing polymers has attracted the attention of many scientists and technologists, both in the USSR and abroad. The scientific basis of the foreign studies will be found in a number of theo retical premises, but chiefly the theory of chain reactions with un branched chains. In the Soviet Union, the concepts of Academician N. N. Semenov on chain reactions with degenerate branches have become the starting point of theoretical studies of the stabilization and destruction of polymers. Soviet scientists have developed a theory of critical concentrations of antioxidants and have shown that the processes of stabilization have a very complex chemical character. The nature of the polymers them selves greatly affects these processes and consequently, different stabil izers are required for polymers of different structures. In addition, it has been shown that the antioxidants used thus far can not only cause chain termination, but can also initiate oxidation and give rise to de generate branches.
Author : Hans Zweifel
Publisher : Springer Science & Business Media
Page : 225 pages
File Size : 53,7 Mb
Release : 2012-12-06
Category : Science
ISBN : 9783642803055
Plastics are used worldwide in everyday life, e.g. as food packaging, electronics, construction, automotive parts, and household appliances. To produce these products with the desired service lifetimes the use of suitable stabilizers is necessary. This book provides a concise and comprehensive overview of the basic mechanisms of plastic degradation processes caused by heat and light. At its core is a detailed description of the stabilization of different polymers, including an explanation of stabilization mechanisms and the influence of commonly used additives such as fillers, flame retardents and pigments on the stability of plastic. Every polymer scientist, material technologist, or application engineer dealing with the design of the properties of plastics will benefit from this new overview.
Author : Norbert A. J. Platzer
Publisher : Unknown
Page : 360 pages
File Size : 50,9 Mb
Release : 1968
Category : Science
ISBN : UOM:39015003735902
Author : W. L. Hawkins
Publisher : Springer Science & Business Media
Page : 129 pages
File Size : 48,8 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9783642693762
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.
Author : K. J. Saunders
Publisher : Springer Science & Business Media
Page : 480 pages
File Size : 48,8 Mb
Release : 2013-03-09
Category : Technology & Engineering
ISBN : 9789401725040
This book deals with the organic chemistry of polymers which find technological use as adhesives, fibres, paints, plastics and rubbers. For the most part, only polymers which are of commercial significance are considered and the primary aim of the book is to relate theoretical aspects to industrial practice. The book is mainly intended for use by students in technical institutions and universities who are specializing in polymer science and by graduates who require an introduction to this field. Several excellent books have recently appeared dealing with the physical chemistry of polymers but the organic chemistry of polymers has not received so much attention. In recognition of this situation and because the two aspects of polymer chemistry are often taught separately, this book deals specifically with organic chemistry and topics of physical chemistry have been omitted. Also, in this way the book has been kept to a reasonable size. This is not to say that integration of the two areas of polymer science is undesirable; on the contrary, it is of the utmost importance that the inter-relationship should b~ appreciated. I wish to record my thanks to my colleagues with whom I have had many helpful discussions, particularly Mrs S. L. Radchenko. I also thank Miss E. Friesen for obtaining many books and articles on my behalf and Mr H. Harms for encouragement and assistance. I am also grateful to Mrs M. Stevens who skilfully prepared the manuscript. Department of Chemical and Metallurgical Technology, Ryerson Polytechnical Institute, K. J. S.
Author : John J. McKetta Jr
Publisher : CRC Press
Page : 520 pages
File Size : 42,8 Mb
Release : 1977-02-01
Category : Science
ISBN : 0824724526
"Written by engineers for engineers (with over 150 International Editorial Advisory Board members),this highly lauded resource provides up-to-the-minute information on the chemical processes, methods, practices, products, and standards in the chemical, and related, industries. "
Author : Niyazi,Savenkova
Publisher : CRC Press
Page : 195 pages
File Size : 43,8 Mb
Release : 2006-11-14
Category : Science
ISBN : 9789047410874
Photodegradation and light stabilization are very important aspects of polymer aging. Polymer degradation includes different types of processes: thermodegradation, oxidation, acting of ozone, photodegradation, radiation, hydrolysis, mechanical degradation, and biodegradation. It is very important to know the mechanism of polymer degradation in orde
Author : Herman F. Mark
Publisher : John Wiley & Sons
Page : 1490 pages
File Size : 50,6 Mb
Release : 2013-10-16
Category : Science
ISBN : 9780470073698
The compact, affordable reference, revised and updated The Encyclopedia of Polymer Science and Technology, Concise Third Edition provides the key information from the complete, twelve-volume Mark's Encyclopedia in an affordable, condensed format. Completely revised and updated, this user-friendly desk reference offers quick access to all areas of polymer science, including important advances in nanotechnology, imaging and analytical techniques, controlled polymer architecture, biomimetics, and more, all in one volume. Like the twelve-volume full edition, the Encyclopedia of Polymer Science and Technology, Concise Third Edition provides both SI and common units, carefully selected key references for each article, and hundreds of tables, charts, figures, and graphs.
Author : Dan Rosu,Visakh P. M.
Publisher : Springer
Page : 405 pages
File Size : 50,6 Mb
Release : 2016-11-21
Category : Technology & Engineering
ISBN : 9783319251967
This book offers in-depth insights into the photochemical behavior of multicomponent polymeric-based materials, with a particular emphasis on the photodegradation and photostabilization of these materials. Studying various classes of materials bases such as polysaccharides, wood, synthetic polymers, rubber blends, and nanocomposites, it offers a valuable reference source for graduate and postgraduate students, engineering students, research scholars and polymer engineers working in industry.
Author : Norman Grassie,Gerald Scott
Publisher : CUP Archive
Page : 236 pages
File Size : 43,6 Mb
Release : 1988-04-14
Category : Science
ISBN : 0521357977
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.
Author : Dunsan C Prevorsek
Publisher : CRC Press
Page : 402 pages
File Size : 46,6 Mb
Release : 1998-09-16
Category : Science
ISBN : 9056995863
The Institute of Chemical Physics of the Russian Academy of Sciences has become one of the world's premiere centers for studies of polymeric materials; in use, during processing, and in harsh environments. The Institute's focus is on commercially available materials and their modifications to improve performance through advanced theoretical analysis and implementation of experimental results. Selected papers from the Institute have been incorporated into five sections-Stabilization and Degradation, Biochemistry , Photochemistry, Rheology and Flame Retardancy-and should provide invaluable background to producers of polymeric materials.
Author : N.S. Allen,M. Edge
Publisher : Springer Science & Business Media
Page : 218 pages
File Size : 47,5 Mb
Release : 1992-10-31
Category : Technology & Engineering
ISBN : 1851667733
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.
Author : Philip E. Slade
Publisher : Routledge
Page : 540 pages
File Size : 40,5 Mb
Release : 2018-10-03
Category : Science
ISBN : 9781351442763
Discusses the components of textile finishes, and the chemical and physical properties of, as well as their effects on, various fibres. The book covers fundamentals of fibre finish science, such as theories of friction; laboratory testing of formulations, from preliminary component evaluation to analyses for material characterization; and the influence of wetting, emulsification and finish distribution on coatings.
