![]() |
Welcome to Loot.co.za!
Sign in / Register |Wishlists & Gift Vouchers |Help | Advanced search
|
Your cart is empty |
||
|
Books > Professional & Technical > Industrial chemistry & manufacturing technologies > Industrial chemistry > Plastics & polymers technology
From Reports in Volume 5: "Recently polymer blends have emerged as one of the most important areas of research activity in the field of polymer science and technology. Because of their satisfactory performance in meeting specific needs of the polymer industry, they have drawn considerable attention in replacing not only many conventional materials, but also some of the polymers that are in vogue. By suitably varying the blend compositions and manipulating the processing conditions, tailor-made products with a unique set of end use properties can be achieved at a much lower cost and within a shorter time than would have been necessary for the development of a new polymer. The usefulness of such blends increases with the increasing range of applications of this type of materials." (Chapter 4) "New and growing demands on polymeric materials cannot be satisfied in future by an assortment extension of basic polymers. Although the introduction of new major-use basic polymer is possible, it seems unlikely in view of current projected economic and technical considerations. On the other hand, new products based on the modification of existing polymers have and will continue to be fruitful areas for both scientific and commercial developments. The driving forces for these developments are: 1. Improved performance, 2. Reduced cost, 3. Present, pending and future legislation dealing with health and environmental issues." (Chapter 11)
New synthetic techniques allow chemists to modify polymer microstructures more precisely than ever, making it possible to design materials that meet increasingly demanding performance requirements. Written and edited by experts in the field, Stereoselective Polymerization with Single-Site Catalysts reviews how the relative stereochemistry of polymer chains affects polymer properties and presents the latest strategies for developing tactic polymers using single-site catalysis. This unified volume explains the mechanistic basics of tactic polymerizations, beginning with an extensive survey of the most important classes of metallocene and post-metallocene catalysts used to make polypropylenes. It also focuses on tactic stereoblock and ethylene/propylene copolymers and catalyst active site models, followed by chapters discussing the structure of more stereochemically complex polymers and polymerizations that proceed via non-vinyl-addition mechanisms. Individual chapters thoroughly describe tactic polymerizations of -olefins, styrene, dienes, acetylenes, lactides, epoxides, acrylates, and cyclic monomers, as well as cyclopolymerizations and ditactic structures, olefin/CO polymers, and metathesis polyalkenamers. An ideal reference and supplementary text, Stereoselective Polymerization with Single-Site Catalysts enables both new and experienced chemists to better understand tactic polymers and select appropriate catalyst systems for their preparation.
Electrical Properties of Polymers describes the electric phenomena responsible for determining the chemical and supramolecular structure of polymers and polymeric materials. The authors explore the properties of quasi-static dipoles, reviewing Brownian motion, Debye theory, Langevin and Smoluchowski equations, and the Onsager model. This reference displays Maxwell and entropy equations, along with several others, that depict the thermodynamics of dielectric relaxation. Featuring end-of-chapter problems and useful appendices, the book reviews molecular dynamics simulations of dynamic dielectric properties and inspects mean-square dipole moments of gases, liquids, polymers, and fixed conformations.
This revised and expanded single-source reference analyzes all compounding material classes of dry rubber compounds, such as carbon blacks, platicizers and age resisters, integrating detailed information on how elastomers are built up. The work provides practical compounding tips on how to avoid oil or antioxidant bloom, how to adjust electrical conductivity and how to meet volume swell requirements.;This second edition: provides material on government regulations regarding rubber waste; presents current insights into the fast-growing polymer technology of thermoplastic elastomers; discusses the ramifications of the commercial availability of epoxidized natural rubber; and offers a comprehensive tabular chart on the properties of polymers.
Cellulose is the most abundant organic polymer on earth. In
solution, cellulose derivatives can form liquid crystals which take
on characteristics of the solid state with unique optical and
physico-mechanical properties. The author presents an overview of
modern developments in the physical chemistry of solutions of
cellulose and its derivatives. Physical Chemistry of Non-aqueous
Solutions of Cellulose and Its Derivatives discusses:
This series presents critical reviews of the present and future trends in polymer and biopolymer science including chemistry, physical chemistry, physics and materials science. It is addressed to all scientists at universities and in industry who wish to keep abreast of advances in the topics covered. Impact Factor Ranking: Always number one in Polymer Science.
Polymer Processing Instabilities: Control and Understanding offers a practical understanding of the various flows that occur during the processing of polymer melts. The book pays particular attention to flow instabilities that affect the rate of production and the methods used to prevent and eliminate flow instabilities in order to increase production rates and enhance manufacturing efficiency. Polymer Processing Instabilities: Control and Understanding summarizes experimental observations of flow instabilities that occur in numerous processing operations such as extrusion, injection molding, fiber spinning, film casting, and film blowing for a wide range of materials, including most commodity polymers that are processed as melts at temperatures above their melting point or as concentrated solutions at lower temperatures. The book first presents the fundamental principles in rheology and flow instabilities. It relates the operating conditions with flow curves, the critical wall shear stress for the onset of the instabilities, and new visualization techniques with numerical modeling and molecular structure. It reviews one-dimensional phenomenological relaxation/oscillation models describing the experimental pressure and flow rate oscillations, analyzes the gross melt fracture (GMF) instability, and examines how traditional and non-traditional processing aids eliminate melt fracture and improve polymer processability. It supplies a numerical approach for the investigation of the linear viscoelastic stability behavior of simplified injection molding flows and examines a newly discovered family of instabilities that occur in co-extrusion. Polymer Processing Instabilities: Control and Understanding is unique in that it fills a gap in the polymer processing literature where polymer flow instabilities are not treated in-depth in any book. It summarizes state-of-the-art developments in the field, particularly those of the last ten years, and contains significant data based on this research.
An in-depth review of important preparative methods for the synthesis and chemical modification of polymers, this authoritative second edition examines the advantages and limitations of various polymerization applications and procedures. It features new approaches and innovative strategies from the most prominent industry and academic laboratories, reflecting the burgeoning role of polymers in modern science and technology. The book analyzes biodegradable polymers for biomedical applications; investigates the use of polyolefins, polymeric dienes, aromatic polyethers, polymides, and metal-containing macromolecules; and covers polymers of acrylic acid, methacrylic acid, and maleic acid.
The last six years have seen a great shift in plastics recycling from the mechanical recycling of the early nineties towards a more integrated approach in which feedstock recycling and the recovery of incineration energy is encouraged. Based on extensive research of the international recycling industry, this book describes technological advances in polymer recycling from the sorting stage through to recycling processes and end-use applications; provides an overview of state-of-the-art recycling techniques with current and potential applications and draws together and consolidates literature in this rapidly growing field. Due to widespread growing concern over the contribution of plastics to environmental pollution, a book which does all of the above is long overdue. In the US and Europe the recycling of polymers is a major political issue and has become an expanding commercial activity. Dr. Scheirs places significant emphasis on the recycling of automobile tyres, polyurethane foams, carpets, engineering plastics and fibre-reinforced composites, all of which had been previously thought to be hard to recycle.
Provides the basic background needed by engineers to determine experimentally and interpret the rheological behavior of polymer melts--including not only traditional pure melts but also solutions and compounds containing anisotropic (fiber or disc) or colloidal particles--and apply it to analyze flow in processing operations. Experimental foundations of modern rheology and rheo-optics and the interpretation of experimental data are covered, which also develops the fundamentals of continuum mechanics and shows how it may be applied to devise methods for measurement of rheological properties, formulation of three-dimensional stress-deformation relationships, and analysis of flow in processing operations. Also discusses the structure of polymers and considers rheological behavior in terms of structure. Constitutive equations relating stress to deformation history in non-Newtonian fluids and their applications are discussed. Each chapter presents an overview of the subject matter and then develops the material in a pedagogical manner.
Volume A of Handbook of Polymer Nanocomposites deals with Layered Silicates. In some 20 chapters the preparation, architecture, characterisation, properties and application of polymer nanocomposites are discussed by experts in their respective fields
The basic principles and mechanism of shape memory polymers, classification of shape memory polymers, and related characterization techniques are illustrated. Furthermore, an overview of the broad spectrum of applications in various fields for shape memory polymer is presented. Special focus will be given to hyperbranched, blended, interpenetrating and bio-based shape memory polymers, as well as shape memory polymer nanocomposites.
The basic problem of polymer physics is obtaining aEURO~structure-propertiesaEURO (TM) 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, which resulted in obtaining a great amount of experimental (mostly indirect) proofs of existence of the local order in the polymer amorphous state. Now, the time has come for creating a structural model of polymer basing based on the local order ideas. The cluster model, as presented in this monograph, of the polymer amorphous state structure represents the realization of such attempts. The development of this cluster model is based on well-known experimental observation: the behavior of glassy polymers in the area of stimulated high-elasticity plateau is described in the framework of rubber elasticity concepts. This gives an opportunity to present the local order (cluster) zone as a multifunctional entanglement of the physical network consisting of several collinear closely packed segments of different macromolecules (the amorphous analogue of crystallite with extended chains) and surrounded by a packless matrix. An independent method for assessing local order zone fraction in the structure has been elaborated. Segment length in the cluster equals the length of the chain statistical segment that gives a correlation between molecular and structural parameters of the polymer. Application of the cluster model allowed description and obtaining of analytical aEURO~structure-propertiesaEURO (TM) correlations for many processes proceeding in polymers: elasticity, yielding, degradation, transport, some thermodynamic processes, structural relaxation, plasticization, structural stabilization at thermo-oxidative degradation, etc. The relation between the cluster model and some modern physical concepts, for instance fractal analysis, fluctuation free volume kinetic
Polyurethane sealants are used in many high-volume applications such as construction and automotive. This volume provides an in-depth, illustrated survey of both the technology and applications. The detailed information will be useful to all those involved in the research, development, processing, evaluation and use of sealants for high-volume applications.
This is a complete illustrated guide and reference to today's plastic films for packaging. All significant aspects of plastic films for packaging are clearly and concisely presented: from materials, processes and machinery to applications and regulatory, social and economic considerations. More than 70 schematics illustrate materials, processes and package constructions. More than 30 tables provide important reference data in convenient form. The authors are leading authorities on plastic packaging films with first-hand experience in the R&D of many of today's widely used films. Published in cooperation with the Institute of Packaging Professionals.
This is a new, basic introduction to polymer science. It is both comprehensive and readable. The authors are leading educators in this field with extensive backgrounds in industrial and academic polymer research. The text starts with a description of the types of microstructures found in polymer materials. This provides an understanding of some of the key features of the various mechanisms of homopolymerization and copolymerization which are discussed in following chapters. Also discussed in these chapters are the kinetics and statistics of polymerization, with a separate chapter on the characterization of chain structure by spectroscopic methods. The next part of the text deals with chain conformation, structure and morphology, leading to a discussion of crystallization, melting and glass transition. The discussion then moves from solid state to solution properties where solution thermodynamics is introduced. This provides the basis for discussion of the measurement of molecular weight by various solution methods. The final chapter deals with mechanical and rheological properties which are discussed from a phenomenological continuum approach and then in terms of a fundamental molecular perspective. Altogether, this new text provides a comprehensive, readable introduction to and overview of polymer science. It is well illustrated with schematics prepared for this text to help in the understanding of key concepts. It will provide a basic understanding of today's polymer science for technical and engineering personnel not already familiar with the subject, and a convenient update and overview for materials scientists.
Biopolymers have the potential to cut carbon emissions and reduce carbon dioxide in the atmosphere. The carbon dioxide released when they degrade can be reabsorbed by plants, which makes them close to carbon neutral. Biopolymers are biodegradable and some are compostable, too. This book presents key topics on biopolymers, including their synthesis, characterization, and physiochemical properties, and discusses their applications in key areas such as biomedicine, agriculture, and environmental engineering. It will serve as an in-depth reference for the biopolymer industry-material suppliers and processors, producers, and fabricators-and engineers and scientists who are designing biopolymers or evaluating options for switching from traditional plastics to biopolymers.
It is difficult to imagine how our highly evolved technological
society would function, or how life would even exist on our planet,
if polymers did not exist. The intensive study of polymeric
systems, which has been under way for several decades, has recently
yielded new insights into the properties of assemblies of these
complex molecules and the physical principles that govern their
behavior. These developments have included new concepts to describe
aspects of the many body behavior in these systems, microscopic
analyses that bring our understanding of these systems much closer
to our understanding of simple liquids and solids, and the
discovery of novel chemistry that these molecules can catalyze.
Phase morphology in multicomponent polymer-based systems represents the main physical characteristic that allows for control of the material design and implicitly the development of new plastics. Emphasizing properties of these promising new materials in both solution and solid phase, this book describes the preparation, processing, properties, and practical implications of advanced multiphase systems from macro to nanoscales. It covers a wide range of systems including copolymers, polymer blends, polymer composites, gels, interpenetrating polymers, and layered polymer/metal structures, describing aspects of polymer science, engineering, and technology. The book analyzes experimental and theoretical aspects regarding the thermal and electrical transport phenomena and magnetic properties of crucial importance in advanced technologies. It reviews the most recent advances concerning morphological, rheological, interfacial, physical, fire-resistant, thermophysical, and biomedical properties of multiphase polymer systems. Concomitantly the book deals with basic investigation techniques that are sensitive in elucidating the features of each phase. It also discusses the latest research trends that offer new solutions for advanced bio- and nanotechnologies. Introduces an overview of recent studies in the area of multiphase polymer systems, their micro- and nanostructural evolutions in advanced technologies, and provides future outlooks, new challenges and opportunities. Discusses multicomponent structures that offer enhanced physical, mechanical, thermal, electrical, magnetic, and optical properties adapted to current requirements of modern technologies. Covers a wide range of materials, such as composites, blends, alloys, gels and interpenetrating polymer networks. Presents new strategies for controlling the micro- and nanomorphology and the mechanical properties of multiphase p
This book provides a simplified and practical approach to designing with plastics that funda mentally relates to the load, temperature, time, and environment subjected to a product. It will provide the basic behaviors in what to consider when designing plastic products to meet performance and cost requirements. Important aspects are presented such as understanding the advantages of different shapes and how they influence designs. Information is concise, comprehensive, and practical. Review includes designing with plastics based on material and process behaviors. As de signing with any materials (plastic, steel, aluminum, wood, etc.) it is important to know their behaviors in order to maximize product performance-to-cost efficiency. Examples of many different designed products are reviewed. They range from toys to medical devices to cars to boats to underwater devices to containers to springs to pipes to buildings to aircraft to space craft. The reader's product to be designed can directly or indirectly be related to product design reviews in the book. Important are behaviors associated and interrelated with plastic materials (thermoplastics, thermosets, elastomers, reinforced plastics, etc.) and fabricating processes (extrusion, injec tion molding, blow molding, forming, foaming, rotational molding, etc.). They are presented so that the technical or non-technical reader can readily understand the interrelationships."
Independent, practical guidance on the structural design of polymer composites is provided for the first time in this book. Structural designers familiar with design of conventional structural materials such as steel and concrete will be able to use it to design a broad range of polymeric composites for structural applications, using glass fibre reinforced plastic materials, components, connections and assemblies.
Polymer Surfaces and Interfaces II W. J. Feast, University of Durham, Durham, UK H. S. Munro, Courtaulds Research, Coventry, UK R. W. Richards, University of Durham, Durham, UK This volume presents a collection of review papers, based on the a Polymer Surfaces and Interfaces II International Symposiuma which took place in Durham (UK), July 1991 Compiled here, the papers present an authoritative overview of current technology and research on polymer surfaces, by acknowledged experts in their specialist fields. Individual reviews cover analytical techniques, properties, reactions, modelling and synthesis of surfaces and interfaces. Polymer Surfaces and Interfaces II will be of interest to polymer scientists, surface scientists, chemists, physicists and biologists, working in industrial and academic laboratories. Reviews of the previous volume a Altogether a most useful addition to polymer sciencea ---- Physics Bulletin a The book can be unreservedly recommended to chemists and materials scientists with an interest in adhesion, biomaterials, polymer dispersions and molecular engineeringa ---- Polymer Contents Surface Chemistry of Chemically Resistant Polymers; T. G. Bee, A. J. Dias, N. L. Franchina, B. U. Kolb, K.--W. Lee, P. A. Patton, M. S. Shoichet and T. J. McCarthy Self--assembled Molecular Films as Polymer Surface Models; D. L. Allara, S. V. Atre and A. N. Parikh Non--equilibrium Effects in Polymeric Stabilization; M. E. Cates and J. T. Brooks Ion Beam Analysis of Composition Profiles near Polymer Surfaces and Interfaces; R. A. L. Jones Laser Light Scattering; J. C. Earnshaw Characterization of Interfaces in Polymers and Composites using Raman Spectroscopy; R. J. Young Surface Modification and Analysis of Ultra--high--modulus Polyethylene Fibres for Composites; G. A. George SSIMS ---- An Emeriging Technique for the Surface Chemical Analysis of Polymeric Biomaterials; M. C. Davies Scanning Probe Microscopy ---- Current Issues in the Analysis of Polymeric Biomaterials; M. C. Davies, D. E. Jackson, C. J Roberts, S. J. B. Tendler, K. M. Kreusel, M. J. Wilkins and P. M. Williams Surface Grafting of a Thrombin Substrate on a Polymer Membrane and the Inhibition of Thrombin Activity Leading to Non--thrombogenicity; Y. Ito, L.--S. Liu and Y. Imanishi Acid----Base Effects at Polymer Interfaces; C. J. van Oss
- One of very few books available to cover this subject area.
Science and Applications of Conducting Polymers emphasizes potential industrial applications of conducting polymers. The papers presented discuss the basic physics and chemistry of conducting polymers, followed by an in-depth examination of applications. The book is ideal for researchers in polymer physics, electronics, optics, and semiconductor physics.
Together, the nano explosion and the genomic revolution are ushering in a new frontier in drug delivery. In recent years we've seen how polymers can play a crucial role in controlling the rate of drug release, enhancing solubility and uptake, and limiting degradation and toxicity. In the very near future, they may well be used to deliver gene therapy. While Polymers in Drug Delivery offers much new insight for the veteran specialist, this work has been compiled with the non-specialist in mind. It includes contributions from many of the world's leading drug delivery specialists, yet avoids jargon and presents background information that initiates the next generation of scientists into the amazing work going on at the frontiers of this rapidly evolving science. Targeting specific issues at the forefront of drug delivery today, this engaging volume- * Outlines the issues that must be considered when selecting a polymer for fabricating a drug delivery agent or other medical devices * Explains the more commonly used methods by which polymers may be characterized prior to use * Profiles polymer matrices that have been used in the formulation of solid oral dosage forms, drug delivery scaffolds, and hydrogels * Examines the issues surrounding the encapsulation of biologics within microspheres * Explores the use of nanoparticulates, especially solid nanoparticles and nanocapsules prepared from largely-water-insoluble cyanoacrylate polymers * Discusses polymeric micelles and investigates the potential of soluble polymer prodrugs and polymer nanomedicines * Details the contribution made by polymers and dendrimers to the gene delivery effort, which may one day lead to effective treatments for largely incurable diseases Noting a dramatic paradigm shift that is bridging the gap between materials science and life science, the editor's have compiled this volume to paint an interdisciplinary portrait of drug delivery that will challenge young scientists to turn their attention and effort towards this critical branch of biomedicine. Containing state-of-the-art information for drug delivery scientists, it is also a great choice for medical and pharmaceutical students and others seeking an in-depth introduction to the field. |
You may like...
Polyurea - Synthesis, Properties…
Pooria Pasbakhsh, Damith Mohotti, …
Paperback
R4,684
Discovery Miles 46 840
Fundamental Biomaterials: Polymers
Sabu Thomas, Preetha Balakrishnan, …
Paperback
3D and 4D Printing of Polymer…
Kishor Kumar Sadasivuni, Kalim Deshmukh, …
Paperback
R5,549
Discovery Miles 55 490
Recycling of Polyethylene Terephthalate…
Sabu Thomas, Ajay Vasudeo Rane, …
Hardcover
R3,977
Discovery Miles 39 770
Sustainable Composites for Aerospace…
Mohammad Jawaid, Mohamed Thariq
Paperback
|