The basic problem of polymer physics is obtaining a ‘structure-propertiesa correlations for their future application for practical purposes. However, these cannot be obtained without the development of a quantitative model of the polymer structure.This problem has been actively investigated during the last 45 years.
This book presents investigation results of thermal transformations in thermoresistant polymers: polysulfones, polyester-imides, aliphatic-aromatic polyimides and polyamides, liquid-crystal aromatic co-polyesters, polyphenylquinoxalines at temperatures of materials and articles processing and operation. An important result of investigations is the determination of thermooxidative degradation regularities for aliphatic-aromatic heterochain polymers and description of the degradation mechanism. The applied aspect of this work is the approach to stabilization of thermoresistant polymers and composite materials derived from them using additives and analysis of the mechanism of high-temperature inhibited oxidation. The book presents results which have been obtained through many years of research until recently, mostly obtained by scientists of G.S. Petrov Research Institute of Polymeric Materials (Moscow, Russia) – one of the leading Institutes in this branch - which have not been available in international scientific publications before.
This volume in the book series New Concepts in Polymer Science deals with the damaging effects, which microorganisms such as bacteria, fungi, etc. can have on a range of materials in machinery. The book aims to provide theoretical notions about the mechanisms of material damaging by microorganisms under operation conditions as well as to give recom
There are obvious benefits in using flame-retardants, as many human lives and property are saved from fire. A large number of compounds have been identified as being used as flame-retardants. At present, knowledge of long-term effects resulting from exposure to flame retardants and their breakdown products is limited. The aim of this volume in the book series New Concepts in Polymer Science is to provide a general overview of the nature, mechanism of action, use and environmental hazards for a number of flame-retardants. This monograph (together with the book by the same authors, Ecological Aspects of Polymer Flame Retardancy (1999) will valuable to anyone interested in the field of flame-retardant chemicals.
New fields of science and technology call for new materials with valuable performance characteristics. Long-term resistance to such temperatures can be found only in polymers with chains made up of thermostable fragments. Particularly interesting in this respect are elementorganic polymers with inorganic and organo-inorganic molecular chains. Elementorganic polymers are not only highly thermostable, but also perform well under low temperatures, sunlight, humidity, weather, etc. Thus, these polymers (especially silicones) are widely and effectively used in the electrical, radio, coal, mechanical rubber, aircraft, metallurgical, textile, and other industries. They are of great utility not only in industry, but also in households and in medicine, where their merits can hardly be overestimated. The need to publish this book arose with the scientific and technical developments of the last decade, the reconstruction and technical renovation of existing factories, as well as fundamental changes in some syntheses of elementorganic monomers and polymers. Moreover, nowadays it is essential to train highly skilled chemical engineers with a comprehensive knowledge of current chemistry, of the production technology of elementorganic monomers and polymers, and of their characteristics and applications.
Processes for clearing gases from dust in wet-type dust separators are widely applied in many industries for technological purposes and environmental control. Among goals of these processes is to ensure high efficiency of dust removal with minimum energy costs. This book presents the newest scientific research data under the theory and practice of
The demand for organosilicon elastomers used in the production of thermally resistant rubbers and organosilicon polymers for making non-metal composite materials is increasing from year to year.This monograph presents a discussion on the methods used for synthesizing and studying properties of newly designed organosilicon polymers, namely organosil
Natural polymers have always been used in medicine. However, the development of synthetic polymers for use in medicine has occurred only in the last few decades. The successful applications of these synthetic polymers in medicine depend mainly on their physico-chemical and special characteristics such as biological compatibility with tissues, stability, durability and elasticity. This book deals mainly with the kinetic and structural aspects which are essential for the realization of these characteristics. The authors have examined in detail the processes of diffusion, chemical and biological diintegration, changes in various structural levels induced by chemical and biological media, and the problems of simultaneous influence of these media and mechanical strains on polymers used in medicine. Researchers in the field of polymer physics and chemistry, as well as those who are working with applications of polymers in medicine and biology should find this book useful.
Diffusion is the process of transport of a substance in space due to thermal migration of 'kinetic' particles. This book firstly determines the general aspects of diffusion in polymers and goes onto to explore characteristics of electrolyte diffusion in different polymers, acids; water diffusion and chemical reactions.
The successful applications of synthetic polymers in medicine depend mainly on their physico-chemical and special characteristics. This book deals mainly with the kinetic and structural aspects which are essential for the realization of these characteristics.
This book considers general aspects of the theory of polymers applied in optics. The main factors affecting the light loss in polymeric wave beam guides (PG) are discussed, and the mechanism of light loss in PG is analysed. Polymers applied in fiber optics are classified with reference to methods of fabrication and purification of the materials. Technological aspects of material fabrication are considered together with kinetic aspects of polymerisation. Updated information on polymerisation kinetics of MMA and styrene, and copolymerisation of these monomers with each other is reported. Other topics discussed in the book are heterogeneity of optic copolymers, association between structure and reactivity of monomers, other properties of optic copolymers, and areas of their commercial application. This volume will be of value and interest to anyone working in the field of optic polymers, both in academia and industry.
This book deals with the ecological aspects of polymer flame retardation. It deals with methods for estimating polymer flammability, the mode of action of modern flame retardants, and ecological concerns of the most used halogenated flame retardants.
The issue of biodamages comprises a wide range of scientific and practical tasks associated with protection of raw materials and products against damage by bacteria, fungi, insects and rodents during long-term storage, production, transportation and operation. The biodegradation is used for degradation and utilization of worn-out materials and articles. This research is urgent for ecology and the struggle against environmental contamination. The biodamage problem is both scientifically complex and practically diverse. Scientifically, it is based on the knowledge of material science, biology and chemistry.The first objective of this book is to provide detailed information on the three interrelated parts: bacteria and fungi (the source of biodamages); insects and rodents (materials and products depredators); and materials and products damaged by living organisms. The most modern data on morphology and physiology of biodegrading microorganisms are presented. The second objective of this book is to provide the reader with a systematisation of biological degradation on both natural and synthetic materials and products (plastics, textile, fibres, leather and fur, wood and so on). Problems of utilisation of polymeric wastes using microorganisms are discussed and main protection methods and technology for raw materials and semi-products against biodamages are shown. Practical recommendation for struggle against biodamage of materials by insects (moth, leather beetles, wood-fretters, cockroaches and termites) and rodents (mice and rats) are given.Since 1960 the biodamage problem received the official status as a large international and practical direction at the junction of sciences and practice of mankind and pooling efforts of various specialists. The final objective of this book is to illustrate that the problem of biodamages is very real today because it is relevant to many aspects of our everyday lives.This volume is intended to be a practical guide on biodamage and biodegradation of polymeric materials and a quick reference to students and researchers from academia and the industry.
This book deals with the fundamental laws of passing of fast liquid-phase chemical as well as heat and mass transfer processes in turbulent flows. The fundamental laws of passing of fast liquid-phase chemical and also heat and mass transfer processes in turbulent flows are considered in the book. Development of a macrokinetics approach is generaliz
This volume in the book series New Concepts in Polymer Science deals with the damaging effects, which microorganisms such as bacteria, fungi, etc. can have on a range of materials in machinery. The book aims to provide theoretical notions about the mechanisms of material damaging by microorganisms under operation conditions as well as to give recom
This new volume in the book series New Concepts in Polymer Science focuses on the problem of creating materials with reduced combustibility as well as the use of polymeric materials for protection from fire or overheating. The majority of polymeric materials are combustible, which has led to the development of polymers, and materials based on these, with reduced combustibility. However the combustibility degree or their ability to protect from fire or high temperature can be indicated only in particular cases of combustion. In this volume the results of the development of physicochemical bases for creating organic polymeric materials with reduced combustibility, which are capable of protecting against high temperatures are discussed. A presentation of chlorinated polyolefins as organic polymers with reduced combustibility is also given.
The basic problem of polymer physics is obtaining a ‘structure-propertiesa correlations for their future application for practical purposes. However, these cannot be obtained without the development of a quantitative model of the polymer structure.This problem has been actively investigated during the last 45 years.
This monograph deals with the structural aspects of transport processes of gases, physical ageing and thermo-oxidative degradation of polymers in detail. Fractal analysis, cluster models of the polymer structurea ‘s amorphous state as well as irreversible aggregation models are used as main structural models. It is shown that the polymer structure
This monograph-based on the authors course lectures on radiation chemistry of biopolymers-deals with the primary stages of radiation-chemical transformation of main biopolymers. Special attention is given to radiolysis of their aqueous solutions, formation and conversion mechanisms of macroradicals, synthesized in acts of solvent radical interactio
The use of polymers is restricted by their flammability - they may indeed initiate or propagate fire. Fire Retardancy of Polymers focuses on mineral additives from either micro- or nano-composites for application in fire retardants. With the use of fire retardant additives containing halogen or phosphorus compounds in decline, the need for other systems is evident. The major materials that are used are alumina trihydrate or magnesium hydroxide which account for more than 50% by weight of the world-wide sales of fire retardants. Recent works have shown that such halogen-free compounds may give enhanced fire retardancy to polymeric materials when used in low levels, alone, or in synergistic mixtures. The corresponding fire performance depends on the dispersion of the mineral filler, with micrometer-scale dispersion leading to the best performances. Specialists discuss these new applications of mineral fillers with particular emphasis on action mechanisms, new materials including textiles, toxicology and hazards. With extensive references, this book provides a comprehensive and up-to-date view of these applications. This book will appeal to professionals, materials scientists and engineers looking for novel ways to eliminate fire hazards and improve flame retardancy of materials, with a special interest in sustainable development.
Biodamage comprises a wide range of damage by bacteria, fungi, insects and rodents during long-term storage, production, transportation and operation. This research is urgent for ecology and the struggle against environmental contamination. The biodamage problem is both scientifically complex and practically diverse. The first objective of this book is to provide detailed information on three interrelated parts: bacteria and fungi (source of biodamages); insects and rodents (depredators); and materials and products damaged by living organisms. The most modern data on morphology and physiology of biodegrading microorganisms are presented. The second objective is to provide the reader with a systematisation of biological degradation on natural and synthetic materials and products (plastics, textile, fibres, leather and fur, wood and so on). It presents the problem of utilisation of polymeric wastes using microorganisms and main protection methods and technology for raw materials and semiproducts. It also offers practical recommendations in the struggle against biodamage by insects (moth, leather beetles, wood-fretters, cockroaches and termites) and rodents (mice and rats). This volume is intended to be a practical guide on biodamage and biodegradation of polymeric materials, offering a reference to students and researchers from academia and the industry.
Polymer nanocomposites continue to receive widespread acclaim for their potential to improve composite materials beyond the use of conventional macroscale fillers. Nanofillers in nanocomposites are used in a broad range of applications because their ease of processing, low price and a combination of advantageous properties. In the last decade, nanofiller particles have prompted much attention and become a developing field in nanocomposites. The main objective of this book is to show how a particle size at the nano scale offers a large surface area and good dispersion behaviour. Detailed information is provided to show that the use of nanofillers is very promising for improving the physical properties more effectively than conventional types of fillers. This book provides up-to-date information on recent advances in various aspects of modern composites reinforced by nanofillers, including their fabrication and engineering properties. The change in such properties can be related to the subsequent conformational changes, but there is controversy about the conformational behaviour of polymer chains when perturbed by nanoparticles. To accomplish these tasks, this book focuses on the behaviour of nanoparticles in both morphology control and reinforcement.
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