Kinetics and Mechanism of Polyreactions: Polymer-analogous reactions. Depolymerization, degradation, and stabilization of polymers PDF Download
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Category : Chemical kinetics
Languages : de
Pages : 0
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Author:
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Category : Chemical kinetics
Languages : de
Pages : 0
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Author:
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Category : Chemical kinetics
Languages : en
Pages : 432
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Author:
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ISBN:
Category : Chemical kinetics
Languages : en
Pages : 506
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Author:
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Category : Chemical kinetics
Languages : en
Pages : 456
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Author:
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Category : Chemical kinetics
Languages : en
Pages : 514
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Author: W. L. Hawkins
Publisher: Springer
ISBN:
Category : Science
Languages : en
Pages : 144
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Book Description
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: Norman Grassie
Publisher: CUP Archive
ISBN: 9780521357975
Category : Science
Languages : en
Pages : 236
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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: Norman Grassie
Publisher:
ISBN:
Category : Polymerization
Languages : en
Pages : 364
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Author: Michael Buback
Publisher: John Wiley & Sons
ISBN: 3527610871
Category : Technology & Engineering
Languages : en
Pages : 270
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This volume from the successful Macromolecular Symposia series presents the contributions from the IUPAC-sponsored International Symposium on "Radical Polymerization: Kinetics and Mechanism", held in Il Ciocco, Italy, in September, 2006. This was the fourth within the series of so-called SML conferences, which are the major scientific forum for addressing kinetic and mechanistic aspects of free-radical polymerization and controlled radical polymerization. SML IV again marked an important step forward toward the better understanding of the kinetics and mechanism of radical polymerization, which is extremely relevant for both conventional and controlled radical polymerization and for people in academia as well as in industry. Here, top international authors, such as K. Matyjaszewski, T. P. Davis and T. Fukuda, present their latest research. The five major themes covered were: Fundamentals of free-radical polymerization, heterogeneous polymerization, controlled radical polymerization, polymer reaction engineering, and polymer characterization.
Author: Leo Reich
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 392
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