Oxydative Ageing Of Polymers

Author : Jacques Verdu
Publisher : John Wiley & Sons
Page : 259 pages
File Size : 45,8 Mb
Release : 2012-12-17
Category : Technology & Engineering
ISBN : 9781118563199

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Oxydative Ageing of Polymers by Jacques Verdu Pdf

This book aims to rehabilitate kinetic modeling in the domain of polymer ageing, where it has been almost abandoned by the research community. Kinetic modeling is a key step for lifetime prediction, a crucial problem in many industrial domains in which needs cannot be satisfied by the common empirical methods. The book proposes a renewed approach of lifetime prediction in polymer oxidative ageing. This approach is based on kinetic models built from relatively simple mechanistic schemes but integrating physical processes (oxygen diffusion and stabilizer transport), and use property (for instance mechanical failure) changes. An important chapter is dedicated to radiation-induced oxidation and its most important applications: radiochemical ageing at low dose rates and photo-chemical ageing under solar radiation. There is also a chapter devoted to the problem of ageing under coupled oxidation and mechanical loading.

Author : Gennadiĭ Efremovich Zaikov
Publisher : Unknown
Page : 272 pages
File Size : 54,9 Mb
Release : 2002
Category : Science
ISBN : UOM:39015056436473

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Aging of Polymers, Polymer Blends and Polymer Composites by Gennadiĭ Efremovich Zaikov Pdf

Preface; Some Manifestations of the Antioxidant Synergy During Polypropylene Oxidation; Inhibiting Properties of Substituted Arylamines with 3,5-di-tert-butyl-4-Hydroxybenzene Fragments; Free Radical Mechanisms of the Unhydroglucose Cycle Radiation Degradation in Polysaccharides; Physical Features of Thermal Ageing Kinetics of Polyurethane and Polyisocyanurate Foams and Forecasting of their Durability; The Ageing of Rigid Polyurethane Foams and Their Waste Destruction at Influence of Landfill Leachiest; Influence of Mineral Filling Agent on the Thermostability of Poly(vinylchloride); Effect of Production Procedure of Butadiene Acrylonitrile Rubber (BNR) on Accelerated Aging of Industrial Rubber Compounds; Using Hindered-Amine Light Stabilisers for Protecting of Rubbers Under Various Types of Aging; Utilisation of Rubber Waste by Pyrolysis with Subsequent Burning of Solid Retorting Residue; Stages of Processes of Extension Deformation of Cross-Linked Polymer Obtained by Hardening Resorcine Glycidyl Ester by Metaphenylenediamine of Temperatures Above Glass Temperature; Temperature Dependence of Rate Constants of Linear Chain Termination for the Three-dimensional Polymerisation of Dimethacrylates; Kinetic Parameters Estimation of Reaction of Peroxides with Amines; Estimation of Kinetic Parameters of Peroxides Decomposition; Synthesis of Functional Group Containing Organocyloxanes and Copolymeres on Their Base; Effect of Temperature on Conductivity of Polymer Conducting Composites; Ageing of Polyester Resin under Moisture Action; Supramolecular Heterophase Kinetic Model of Photo-Transformations in Cellulose Triacetate Sensitised by Naphtalene; Estimation, Forecasting, Regulation of Operational Stability of Materials in XXI Century; Perspectives of a Quantitative Estimation of Kinetics and Mechanism of Processes); The Role of Sulphur Containing Groups in Inhibition of Oxidative Degradation of Polyolefins by Hindered Amines; Estimation of Hindered Amines Molecular Structure Influence on Their Efficiency; Express Method for Thermoplastic Products Longevity Estimation; Thermal Behaviour and Stabilisation of Arylaliphatic Polyamide; Liquid Crystalline Copolymers as Modifiers for Some Thermoplastics; Diffusion at Acetic Acid in Hydrolysable Glassy Polymers. Case of Poly(vinylacetate), Poly(vinylalcohol) and Polyester; Inhibited Oxidation of Polypropylene Melt. The Effect of Multiple Crystallisation at the Polymers; Effect of Conditions on the Mechanism of Fracture of Polymers under Intense Stress Fields at Evaluated Temperature; Kinetic Peculiarities of Synthesis of Adamantane-Containing Polyamides and Polyimides; Chemical Modification of Aromatic Polyimides by Adamantane-Containing Diamines and Properties of Resulted Polymers; Research of a Membranes Material by Reversed Gas Chromatography; Influence of Intensive Mechanical Treatment on Decomposition of Barium Peroxide; The Peculiarities of a Bitumens Modification by Solidifying Thiokol Compositions; Ecological Aspects of Manufacture and Application of Highly Pure Liquid Substances; Use of Fluoropolymerts Unique Properties at Design of New Highly Effective Ecologically Friendly Technologies for Fine Purification of Halogen Hydrides and Their Aqueous Solutions; Index.

Author : M. B. Neiman
Publisher : Springer Science & Business Media
Page : 374 pages
File Size : 50,6 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9781461585497

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Aging and Stabilization of Polymers by M. B. Neiman Pdf

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 : Gennadiĭ Efremovich Zaikov
Publisher : Nova Publishers
Page : 186 pages
File Size : 54,5 Mb
Release : 2002
Category : Science
ISBN : 1590334442

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Polymer Aging at the Cutting Edge by Gennadiĭ Efremovich Zaikov Pdf

Twenty-one papers collected here report on the latest work in polymer ageing, looking at aspects including the ageing of polyester resin under moisture action, kinetic peculiarities of synthesis of Adamantan- containing polyamidoacids and polyimides, the influence of intensive mechanical treatment on decomposition of barium peroxide, and ecological aspects of manufacture and application of highly pure liquid substances. Biodegradable blends of starch and cellulose derivatives, the quantum chemical calculation of components of biosynthesis of adrenaline, low combustible poly(vinyl chloride) compositions with mixtures of plasticiSers, and inhibited oxidation of polypropylene melt are some other topics discussed.

Author : D. C. Wright
Publisher : iSmithers Rapra Publishing
Page : 142 pages
File Size : 50,8 Mb
Release : 2001
Category : Science
ISBN : 1859572715

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Failure of Polymer Products Due to Thermo-oxidation by D. C. Wright Pdf

The combined effects of oxidising media and heat result in degradation by thermo-oxidation. The principles and cases described in this review emphasise long term degradation in service. Two additional phenomena that influence thermo-oxidation are also described: catalysis by certain metal ions, and the influence of stress. An additional indexed section containing several hundred abstracts from the Polymer Library gives useful references for further reading.

Author : J.F. Rabek
Publisher : Springer Science & Business Media
Page : 679 pages
File Size : 52,5 Mb
Release : 2012-12-06
Category : Technology & Engineering
ISBN : 9789401112741

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Polymer Photodegradation by J.F. Rabek Pdf

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.

Author : M. Strlic (ed.),J. Kolar (ed.)
Publisher : Unknown
Page : 228 pages
File Size : 41,9 Mb
Release : 2005
Category : Paper
ISBN : UOM:39015080705927

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Ageing and Stabilisation of Paper by M. Strlic (ed.),J. Kolar (ed.) Pdf

Author : Norman Grassie,Gerald Scott
Publisher : CUP Archive
Page : 236 pages
File Size : 52,7 Mb
Release : 1988-04-14
Category : Science
ISBN : 0521357977

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Polymer Degradation and Stabilisation by Norman Grassie,Gerald Scott Pdf

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 : R.G. Compton,C.H. Bamford,C.F.H. Tipper†
Publisher : Elsevier
Page : 561 pages
File Size : 55,9 Mb
Release : 1975-01-01
Category : Science
ISBN : 0080868088

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Degradation of Polymers by R.G. Compton,C.H. Bamford,C.F.H. Tipper† Pdf

Degradation of Polymers

Author : Robert L. Feller
Publisher : Oxford University Press, USA
Page : 304 pages
File Size : 43,8 Mb
Release : 1994
Category : Art
ISBN : UOM:39015032308630

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Accelerated Aging by Robert L. Feller Pdf

A survey of accelerated-aging tests and the underlying causes of the deterioration of organic coatings, based on research conducted at the Carnegie Mellon Research Institute. Topics include classes of stability, kinetic analysis of change, photochemical deterioration, the effect of moisture and high temperatures in oxidative degradation, and the role of oxygen. Includes appendices on dyes, auto-oxidation of organic compounds, and determination of photo-initiation rates by measurement of nitroxide termination. Annotation copyright by Book News, Inc., Portland, OR

Author : Krzysztof Pielichowski,James Njuguna,Tomasz M. Majka
Publisher : Elsevier
Page : 379 pages
File Size : 40,5 Mb
Release : 2022-11-05
Category : Technology & Engineering
ISBN : 9780128231425

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Thermal Degradation of Polymeric Materials by Krzysztof Pielichowski,James Njuguna,Tomasz M. Majka Pdf

Thermal Degradation of Polymeric Materials, Second Edition offers a wealth of information for polymer researchers and processors who require a thorough understanding of the implications of thermal degradation on materials and product performance. Sections cover thermal degradation mechanisms and kinetics, as well as various techniques, such as thermogravimetry in combination with mass spectroscopy and infrared spectrometry to investigate thermal decomposition routes. Other chapters focus on polymers and copolymers, including polyolefins, styrene polymers, polyvinyl chloride, polyamides, polyurethanes, polyesters, polyacrylates, natural polymers, inorganic polymers, high temperature-resistant and conducting polymers, blends, organic-inorganic hybrid materials, nanocomposites, and biocomposites. Finally, other key considerations such as recycling of polymers by thermal degradation, thermal degradation during processing, and modelling, are discussed in detail. Explains mechanisms of polymer degradation, making it possible to understand and predict material behavior at elevated temperatures Offers systematic coverage of each polymer group that is supported by data detailed explanations and critical analysis Investigates thermal decomposition routes in new materials, such as organic-inorganic hybrid materials and polymer nanocomposites

Author : G. Geuskens
Publisher : Unknown
Page : 224 pages
File Size : 50,5 Mb
Release : 1975
Category : Polymerization
ISBN : UCSD:31822012118873

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Degradation and Stabilisation of Polymers by G. Geuskens Pdf

Author : Hans Helmut Gunter Jellinek
Publisher : Elsevier Publishing Company
Page : 700 pages
File Size : 45,5 Mb
Release : 1983
Category : Science
ISBN : UOM:39015016098066

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Degradation and Stabilization of Polymers by Hans Helmut Gunter Jellinek Pdf

Author : Norbert A. J. Platzer
Publisher : Unknown
Page : 360 pages
File Size : 43,9 Mb
Release : 1968
Category : Science
ISBN : UOM:39015003735902

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Stabilization of Polymers and Stabilizer Processes by Norbert A. J. Platzer Pdf

Author : Richard Arthur Pethrick,Gennadiĭ Efremovich Zaikov,Daniel Horák
Publisher : Nova Publishers
Page : 218 pages
File Size : 43,7 Mb
Release : 2007
Category : Science
ISBN : 1600214754

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Polymers and Composites by Richard Arthur Pethrick,Gennadiĭ Efremovich Zaikov,Daniel Horák Pdf

Book & CD. This book aims to present the progress in the science of polymers and monomer, synthesis, study of properties and application of polymers, polymer mixtures, composites and filled polymers. The book collects original articles and reviews important for both pure and applied chemistry. The application of polymers in medicine, composites and nanocomposites, reduction of polymer material combustibility, kinetics and the mechanism of various reactions are of special attention. Both synthetic and natural polymers are discussed. Some part of the collection, related to chemistry and physics of polymers, is devoted to oligomers and low-molecular compounds. This book brings together new and exciting research in this field.