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Author : Gerald Scott
Publisher : Unknown
Page : 342 pages
File Size : 52,8 Mb
Release : 1983
Category : Polymers
ISBN : OCLC:755158581
Author : Gerald Scott
Publisher : Elsevier Science & Technology
Page : 360 pages
File Size : 53,5 Mb
Release : 1979
Category : Technology & Engineering
ISBN : STANFORD:36105019764435
Author : G. Scott
Publisher : Springer Science & Business Media
Page : 303 pages
File Size : 47,7 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9789400934290
The purpose of the present series of publications 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 complementary and ultimately more important objec tive 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 the basis of a firm mechanistic foundation. Research into the role of 'stable' free radicals as antioxidants and stabilisers for polymers has intensified in recent years. Nitroxyl radicals (nitroxides) were the earliest long-lived radicals to be investi gated in detail and Maslov and Zaikov review the developments that have taken place in understanding their reaction mechanisms from the time when they were first investigated in liquid hydrocarbon systems to the present day when their outstanding performance as light stabilisers has been the object of much scientific research. Although some features of their reactivity remain obscure, the authors approach the problem kinetically and indicate the factors limiting their effectiveness.
Author : Gerald Scott
Publisher : Unknown
Page : 244 pages
File Size : 48,6 Mb
Release : 1980
Category : Electronic
ISBN : OCLC:867147397
Author : Gerald Scott
Publisher : Unknown
Page : 0 pages
File Size : 45,8 Mb
Release : 1987
Category : Polymers
ISBN : OCLC:1123910290
Author : Anonim
Publisher : Unknown
Page : 334 pages
File Size : 42,8 Mb
Release : 1979
Category : Polymers
ISBN : OCLC:777117084
Author : Norman Grassie,Gerald Scott
Publisher : CUP Archive
Page : 236 pages
File Size : 44,7 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 : S. Al-Malaika
Publisher : Springer Science & Business Media
Page : 416 pages
File Size : 48,9 Mb
Release : 2012-12-06
Category : Science
ISBN : 9789400914490
Chemical modification of polymers by reactive modifiers is no longer an academic curiosity but a commercial reality that has delivered a diverse range of speciality materials for niche markets: reactively grafted styrenic alloys, maleated polyolefins, super-tough nylons, silane modified and moisture-cured polyolefins, and thermoplastic elastomers, are but few exam ples of commercial successes. Although the approach of reactive modification of polymers has been largely achieved either in solution or in the solid state (through in situ reactions in polymer melts), it is the latter route that has attracted most attention in the last two decades owing to its flexibility and cost-effective ness. This route, referred to as reactive processing, focuses on the use of suitable reactive modifier(s) and the adoption of conventional polymer processing machinery, an extruder or a mixer, as a chemical reactor, to perform in situ targeted reactions for chemical modification of preformed polymers. This relatively simple, though scientifically highly challenging, approach to reactive modification offers unique opportunities in exploiting various reactive modifiers for the purpose of altering and transforming in a controlled manner the properties of preformed commercial polymers into new/speciality materials with tailor-made properties and custom-designed performance for target applications. Such an economically attractive route constitutes a radical diversion away from the traditional practices of manufacturing new polymers from monomers which involves massive in vestments in sophisticated technologies and chemical plants.
Author : Francesco Paolo La Mantia
Publisher : ChemTec Publishing
Page : 198 pages
File Size : 53,9 Mb
Release : 1996
Category : Electronic books
ISBN : 9781895198119
This book, on recycling of PVC and mixed plastic wastes, has been compiled from contributions from an array of scientists from several countries who are playing a leading role in plastic recycling. They offer practical solutions to many difficult problems in this field. Anyone involved in production of materials from virgin polymers who is concerned with their recyclability should read this book. The ideas and data presented will help the process of planning future recycling efforts and help to bring the recycling process from a costly nuisance to a profitable industry.
Author : G. Scott
Publisher : Elsevier
Page : 348 pages
File Size : 49,7 Mb
Release : 1997-05-01
Category : Technology & Engineering
ISBN : 9780857099938
The use of antioxidants is widespread throughout the rubber, plastics, food, oil and pharmaceutical industries. This book brings together information generated from research in quite separate fields of biochemical science and technology, and integrates it on a basis of the common mechanisms of peroxidation and antioxidant action. It applies present knowledge of antioxidants to our understanding of their role in preventing and treating common diseases, including cardiovascular disease, cancer, rheumatoid arthritis, ischemia, pancreatitis, hemochromatosis, kwashiorkor, disorders of prematurity and disease of old age. Antioxidants deactivate certain harmful effects of free radicals in the human body due to biological peroxidation, and thus prevent protection against cell damage. The book is of considerable interest to scientists working in the materials and foodstuff industries, and to researchers seeking information on the connection between diet and health, and to those developing new drugs to combat diseases associated with oxidative stress. It is important also throughout the non-medical world, especially to the work force within the affected industries. Examines research in separate fields of biochemical science and technology and integrates it on a basis of the common mechanisms of peroxidation and antioxidant action Applies present knowledge of antioxidants to our understanding of their role in preventing and treating common diseases, including cardiovascular disease, cancer, rheumatoid arthritis and others
Author : Nicholas Cheremisinoff
Publisher : CRC Press
Page : 766 pages
File Size : 49,7 Mb
Release : 2023-07-21
Category : Technology & Engineering
ISBN : 9781000938487
This handbook focuses on physical, structural, and compositional properties of elastomeric materials and plastics. It provides a broad overview of the physical and physicochemical properties of synthetic rubbers that are used in conventional cured applications.
Author : N. Grassie
Publisher : Springer
Page : 450 pages
File Size : 53,7 Mb
Release : 2011-10-19
Category : Technology & Engineering
ISBN : 9401086893
Author : N.S. Allen,M. Edge
Publisher : Springer Science & Business Media
Page : 218 pages
File Size : 48,5 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 : Bozzano G Luisa
Publisher : Elsevier
Page : 556 pages
File Size : 42,7 Mb
Release : 2012-12-02
Category : Science
ISBN : 9780444597021
This volume examines the oxidation chemistry of carbon-based materials in more detail with emphasis on the technological phenomena that result from the attack of oxygen and the practical procedures developed to prevent them.
Author : G. Scott
Publisher : Springer Science & Business Media
Page : 336 pages
File Size : 52,9 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9789401138383
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.