This book deals with the micromechanical characterization of polymer materials. It emphasizes microhardness as a technique capable of detecting a variety of morphological and textural changes in polymers. The authors provide a comprehensive introduction to the microhardness of polymers, including descriptions of the various testing methods in materials science and engineering. They also discuss the micromechanical study of glassy polymers and the relevant aspects of microhardness of semicrystalline polymers. Numerous application examples of the microhardness technique for the characterization of polymeric materials help readers develop a solid understanding of the material. These real world examples include the influence of polymer processing, the use in weathering tests, the characterization of modified polymer surfaces, and others. This book will be of use to graduate level materials science students, as well as research workers in materials science, mechanical engineering and physics departments interested in the microindentation hardness of polymer materials.

Understanding Injection Molds opens up the entire subject of injection mold technology, including numerous special procedures, in a well-grounded and practical way. It is specifically intended for beginners, young professionals, business owners, and engineering students. The chapters are clearly structured and easy to understand. The book is designed so that it provides a complete basic knowledge of injection molds in chronological order as well as day-to-day guidance and advice. The numerous colour figures facilitate a rapid understanding of the content, which is especially helpful to the beginner who wants to learn about injection molds quickly. In the forefront of the description are thermoplastic molds. Divergent processes for thermoset or elastomer molds are explained at the end of each chapter. This book captures the current state of the art, and is written by authors who are specialists in the field. The second edition has been updated and improved throughout.

Polymers exhibit a range of physical characteristics, from rubber-like elasticity to the glassy state. These particular properties are controlled at the molecular level by the mobility of the structural constituents. Remarkable changes in mobility can be witnessed with temperature, over narrow, well defined regions, termed relaxation processes. This is an important, unique phenomenon controlling polymer transition behaviour and is described here at an introductory level. The important types of relaxation processes from amorphous to crystalline polymers and polymeric miscible blends are covered, in conjunction with the broad spectrum of experimental methods used to study them. In-depth discussion of molecular level interpretation, including recent advances in atomistic level computer simulations and applications to molecular mechanism elucidation, are discussed. The result is a self-contained, up-to-date approach to polymeric interpretation suitable for researchers in materials science, physics and chemistry interested in the relaxation processes of polymeric systems.

This book is derived from a recent project sponsored by the Polymer Engineering Directorate of the SERC and carried out at the University of Lancaster under the joint auspices of the Departments of Chemistry and Engineering. The project set out to provide a novel type of teaching material for introducing polymers and their uses to students, especially of engineering. Case studies of real examples of polymers at work are used, so the student or teacher can start with a successful and well-designed product and work backwards to its origins in the market, in design and material selection and in the manufacturing process. The philosophy is that such an approach captures interest right at the start by means of a real example and then retains it because of the relevance of the technical explanation. This after all is what most of us do habitually; we turn to examples to make our point. The hope is that subject matter with a somewhat notorious reputation among engineers, such as aspects of polymer chemistry and the non-linear behaviour of polymers under mechanical loading will be fairly painlessly absorbed through the context of the examples. Each study becomes a separate chapter in the book. The original studies, and hence the present chapters, vary in length because different topics demanded different approaches. No attempt has been made to alter this, or to adopt a standardized format because to have done so would have interfered with the vitality of the original work.

Block copolymers represent an important class of multi-phase material, which have received very widespread attention, particularly since their successful commercial development in the mid-1960s. Much of the interest in these polymers has arisen because of their rather remarkable micro phase morphology and, hence, they have been the subject of extensive microstructural examination. In many respects, the quest for a comprehensive interpretation of their structure, both theoretically and experimentally, has not been generally matched by a corresponding enthusiasm for developing structure/property relationships in the context of their commercial application. Indeed, it has been left largely to the industrial companies involved in the development and utilization of these materials to fulfil this latter role. While it is generally disappointing that a much greater synergism does not exist between science and technology, it is especially sad in the case of block copolymers. Thus these materials offer an almost unique opportunity for the application of fundamental structural and property data to the interpretation of the properties of generally processed artefacts. Accordingly, in this book, the editor has drawn together an eminent group of research workers, with the specific intention of highlighting some of those aspects of the science and technology of block copolymers that are potentially important if further advances are to be made either in material formulation or utilization. For example, special consideration is given to the relationship between the flow properties of block copo lymers and their microstructure."

This book provides readers with a comprehensive toolbox for dispersing single-walled and multiwalled carbon nanotubes in thermoplastic polymer matrices. The book starts with an overview of all known techniques for dispersing CNTs in thermoplastic polymers and then concentrates on one of the most versatile techniques known nowadays: the so-called latex technology. Also discussed are the basic principles of this latex technology, the role of the matrix viscosity on percolation threshold, the importance of the intrinsic CNT quality, the use of "smart" surfactants facilitating electron transport in the final composite, the preparation of highly loaded master-batches, which can be diluted with virgin polymer by melt-extrusion, and some promising potential applications.

This book is an authoritative and comprehensive account of the principles and practice of NMR spectroscopy of solids as applied to polymeric materials to determine their structure and dynamics at a molecular level. NMR spectroscopy has been applied to the characterization of polymers in solid state for over 40 years. The past few decades have seen the development of many new NMR capabilities, including high-resolution techniques for solids, multi-dimensional methods, deuterium NMR and others. All of these developments have contributed to a dramatic increase in the power and applicability of NMR for the characterization, at a molecular level, of the dynamics and structural organization of polymeric solids. The applications chapters emphasize the polymer types and properties. The authors have included an introduction to all the main principles of the technique involved in its application to solid polymers. Rigorous and detailed analytical treatment of all main areas is also available.

The novel properties of multifunctional polymer nanocomposites make them useful for a broad range of applications in fields as diverse as space exploration, bioengineering, car manufacturing, and organic solar cell development, just to name a few. Presenting an overview of polymer nanocomposites, how they compare with traditional composites, and their increasing commercial importance, Multifunctional Polymer Nanocomposites conveys the significance and various uses of this new technology for a wide audience with different needs and levels of understanding. Exploring definitions, architectures, applications, and fundamental principles of various functions of multifunctional polymeric smart materials-from bulk to nano-this book covers the use of multifunctional polymer nanocomposites in: Carbon nanotubes Electroactive and shape memory polymers Magnetic polymers Biomedical and bioinformation applications Fire-resistance treatments Coating technologies for aeronautical applications Ocean engineering A practical analysis of functional polymers, nanoscience, and technology, this book integrates coverage of fundamentals, research and development, and the resulting diversity of uses for multifunctional polymers and their nanocomposites. Quite possibly the first reference of its kind to explore the progress of polymer nanocomposites in terms of their multifunctionality, it covers both theory and experimental results regarding the relationships between the effective properties of polymer composites and those of polymer matrices and reinforcements. This book is a powerful informational resource that illustrates the importance of polymer nanomaterials, examining their applications in various sectors to promote new, novel research and development in those areas. It will be a welcome addition to the libraries of not only engineering researchers, but senior and graduate students in relevant fields.

Biopolymers are attracting immense attention of late because of their diverse applications that can address growing environmental concerns and energy demands. The development of various biomaterials creates significant advancements in the medical field as well, and many biopolymers are used for the fabrication of biomaterials. Together, biopolymers and biomaterials create great potential for new materials, applications, and uses. This new volume, Biopolymers and Biomaterials, covers the science and application of biopolymers and biomaterials. It presents an array of different studies on biopolymers and biomaterials, along with their results, interpretation, and the conclusions arrived at through investigations. It includes biopolymer synthesis, their characterizations, and their potential applications. The book begins with an explanation of the different biopolymers used in the textile industry, their advantages and disadvantages, and their applications.

Radical polymerization is one of the most widely used means of producing vinyl polymers, supporting a myriad of commercial uses. Maintaining the quality of the critically acclaimed first edition, the Handbook of Vinyl Polymers: Radical Polymerization, Process, and Technology, Second Edition provides a fully updated, single-volume source on the chemistry, technology, and applications of vinyl polymers. Emphasizes radical initiating systems and mechanisms of action... Written by renowned researchers in the field, this handbook is primarily concerned with the physical and organic chemistry of radical vinyl polymerization. The authors survey the most recent advances, processing methods, technologies, and applications of free radical vinyl polymerization. The book features thorough coverage of polymer functionalization, photo initiation, block and graft copolymers, and polymer composites. Analyzes living/controlled radical polymerization, one of the latest developments in the field... Combining fundamental aspects with the latest advances, processing methods, and applications in free radical vinyl polymerization and polymer technology, this invaluable reference provides a unified, in-depth, and innovative perspective of radical vinyl polymerization.

The improvement of strength and durability in polymers has implications relevant to industrial, medical, and household applications. Enhanced by the improved knowledge of the interactions between complex hierarchical structures and functional requirements, Mechanical Properties of Polymers Based on Nanostructure and Morphology focuses on new polymer materials that possess a combination of improved mechanical and other physical properties. This book specifies techniques used in structural and morphological characterization, discusses crazing and molecular variables of fracture behavior, and clarifies various modes of deformation mechanisms and orientation processes for semicrystalline polymers, block copolymers, and composites. The volume examines microindentation hardness studies and mechanisms of toughness enhancement for particle modified, amorphous and semicrystalline polymers and blends using model analysis. Experts in the field present innovations that illustrate new aspects of manufacturing, structure development, and properties of practical relevance in nanoparticle-filled thermoplastic polymers and the applications of carbon nanotube and nanofiber reinforced polymer systems. Other topics discussed in the book include alternative methods of polymer modification based on micro- and nanolayered polymers and hot compaction of oriented fibers and tapes. This book reflects the continuing research of mechanisms contributing to the structure-function relationship of nanostructured polymers and nanocomposites. Mechanical Properties of Polymers Based on Nanostructure and Morphology presents effective ways to combine improved mechanical and physical properties in polymers and form new, performance-enhanced composite materials.

Recent advances not only in the creation of new polymers but also in their processing and production have ushered in huge strides in a variety of biomedical and clinical areas. Orthopedics and dentistry are two such areas that benefit immensely from developments in polymer science and technology. Polymers for Dental and Orthopedic Applications examines the most current topics in this expanding field with an emphasis on technological evolution and clinical impacts. Surveying major progress in polymer science and technology for dental, maxillofacial, and orthopedic applications, this book provides a unique illustration of the conceptual development of novel biomaterials and processes designed to meet targeted clinical needs. Two preeminent scientists lead a close-knit team of international experts with extensive experience in product development, bioengineering, education, and clinical applications. Ranging from polymeric materials for dental and maxillofacial application to joint repair and replacement, polymeric composites, and tissue engineering, the book also examines topics that are common to both dental and orthopedic fields, such as osseointegration and infection management. Explore the current status and future possibilities of polymeric biomaterials in Polymers for Dental and Orthopedic Applications. A unique blend of technical information and practical insight, this reference fosters the continued growth of a critically important field.

Admired for their extraordinary stimuli-sensitive behavior and shape-changing capabilities, shape-memory polymers (SMPs) and multifunctional composites are among the most important smart materials. They continue to be widely applied in many diverse fields to create things such as self-deployable spacecraft structures, morphing structures, SMP foams, smart textiles, and intelligent medical devices. Written by renowned authors, Shape-Memory Polymers and Multifunctional Composites is a broad overview of the systematic progress associated with this emerging class of materials. The book presents an overview of SMPs and a detailed discussion of their structural, thermo-mechanical, and electrical properties, and their applications in fields including aeronautics, astronautics, biomedicine, and the automotive industry. Covering topics ranging from synthesis procedures to ultimate applications, this is a sound instructional text that serves as a guide to smart materials and offers an in-depth exploration of multifunctional SMPs and SMP composites, outlining their important role in the materials field. In each chapter, industry experts discuss different key aspects of novel smart materials, from their properties and fabrication to the actuation approaches used to trigger shape recovery. This comprehensive analysis explores the different functions of SMPs, the fundamentals behind them, and the ways in which polymers may reshape product design in general.

Derived from the fourth edition of the well-known "Plastics Technology Handbook," Plastics Fabrication and Recycling presents the molding and fabrication processes of plastics as well as several important features of plastics recycling.

The book begins with a discussion of different types of molds and dies, including compression molding, injection molding, blow molding, thermoforming, reaction injection molding, extrusion, and pultrusion. It then covers spinning, casting, reinforcing, foaming, compounding, and coating processes as well as powder molding, adhesive bonding, and plastics welding techniques. The authors also explore the decoration of plastics, including painting operations, printing processes, hot stamping, in-mold decorating, embossing, electroplating, and vacuum metallizing. They conclude with an overview on key aspects of plastics recycling, developments in the field, and waste recycling problems.

When combined with reinforcing agents, plastics can be used for a number of high-temperature applications. Plastics Reinforcement and Industrial Applications provides a detailed discussion on plastics, polymers, and reinforcing agents (including organic and natural biomaterials). Focused specifically on improving the mechanical, thermal, and electrical stability of plastics by combining them with reinforcing agents, this book explains the background of reinforced plastics and describes how they work. The book examines reinforcing agents that include glass fibers, carbon fibers, carbon nanotubes, graphite, talc, and minerals, and commonly used plastics such as polyamides, polyesters, polyethylene terephthalate, and epoxy resins. It also introduces newer plastics such as polyimides, polysulfones, polyethersulfone, polyphenylene sulfide, and polyether ether ketones. It highlights recent developments in the field that include the use of nanocomposites for manufacturing sports equipment, and other applications of nanoparticles in polymer reinforcement. In addition, use of this material can aid in the production of plastics utilized in the construction of aircraft and light weight automobiles. The author covers a wide range of applications that may be applied in general engineering, automotive, aerospace, building materials, electronics and microelectronics, power sources, medical, and bioengineering. He also includes material on natural fibers used for reinforcement and green chemistry applications. Suitable for use in the metals and plastics industries, Plastics Reinforcement and Industrial Applications is an ideal resource for polymer and material scientists, and chemical and mechanical engineers.

This book deals with the micromechanical characterization of polymer materials. It emphasizes microhardness as a technique capable of detecting a variety of morphological and textural changes in polymers. The authors provide a comprehensive introduction to the microhardness of polymers, including descriptions of the various testing methods in materials science and engineering. They also discuss the micromechanical study of glassy polymers and the relevant aspects of microhardness of semicrystalline polymers. Numerous application examples of the microhardness technique for the characterization of polymeric materials help readers develop a solid understanding of the material. These real world examples include the influence of polymer processing, the use in weathering tests, the characterization of modified polymer surfaces, and others. This book will be of use to graduate level materials science students, as well as research workers in materials science, mechanical engineering and physics departments interested in the microindentation hardness of polymer materials.

This practical guide for managers and engineers in the plastics industry shows how to reduce high noise levels which often occur in the workplace and reduce the risk of noise-induced hearing damage to employees. Practical methods for reducing noise from industrial machinery are described and illustrated with about twenty-five case studies relating to plastics processing machines such as granulators, shredders, extruders and injection moulders. Noise-control techniques include standard noise-control measures: enclosures, silencers and the use of sound insulating, sound-absorbing materials, vibration isolation and damping; and now the use of active noise control methods. Along with fresh case studies this new edition adds chapters on environmental noise, on European Union machinery noise emission regulations, hearing protection, prediction of noise levels, and the design of quieter workplaces.

This book discusses the concept of single polymer composites (SPCs), their preparation, and properties and the main factors which affect the manufacturing of this class of composites. It deals with the leading classes of polymers, chapter wise, which have been majorly explored for manufacturing SPCs - polyolefins, polyesters, polyamides, and LCPs - includes a case study on manufacturing of SPCs, and devotes three chapters to detailed analyses of research on all-cellulose composites. Addressing the concerns of the researchers, it also answers intriguing questions in the field of SPCs with pointers to the right references. Key Features Presents a summary of single polymer composites based on various polymers Includes mechanical and thermal properties of single polymer composites Reviews detailed view of eco-friendly approaches to composites Offers a special focus on all-cellulose composites Supports concepts with figures, schemes, and tables

Cyclic Polymers (Second Edition) reviews the many recent advances in this rapidly expanding subject since the publication of the first edition in 1986. The preparation, characterisation, properties and applications of a wide range of organic and inorganic cyclic oligomers and polymers are described in detail, together with many examples of catenanes and rotaxanes. The importance of large cyclics in biological chemistry and molecular biology is emphasised by a wide coverage of circular DNA, cyclic peptides and cyclic oligosaccharides and polysaccharides. Experimental techniques and theoretical aspects of cyclic polymers are included, as well as examples of their uses such as ring opening polymerisation reactions to give commercially important materials. This book covers a wide range of topics which should be of interest to many scientific research workers (for example, in polymer science, chemistry and molecular biology), as well as providing a reference text for undergraduate and graduate students.

The book describes the development and commercialization of materials with viscoelastic properties, placing particular emphasis on the scientific and technological differences between plastics and bioplastics. The authors explain how to handle each of the two types of materials and determine the comparative environmental impact of the material life-cycle. The practical values of the overlapping aspects of the two types of materials from technical properties to eco-compatibility are also discussed.

In order to adapt the properties of living materials to their biological functions, nature has developed unique polyelectrolytes with outstanding physical, chemical and mechanical behavior. Namely polyampholytes can be suitable substances to model protein folding phenomenon and enzymatic activity most of biological macromolecules due to the presence of acidic and basic groups. The ability of linear and crosslinked amphoteric macromolecules to adopt globular, coil, helix and stretched conformations and to demonstrate coil-globule, helix-coil phase transitions, and sol-gel, collapsed expanded volume changes in relation to internal (nature and distribution of acid and base substituents, copolymer composition, hydrophobicity etc. ) and external (pH, temperature, ionic strength of the solution, thermodynamic quality of solvents etc. ) factors is very important and constantly attracts the attention of theorists and experimentalists because the hierarchy of amphoteric macromolecules can repeat, more or less, the structural organization of proteins. That is why polyampholytes fall within eyeshot of several disciplines, at least polymer chemistry and physics, molecular biology, colloid chemistry, coordination chemistry and catalysis. The main purpose of this monograph is to bridge the gap between synthetic and natural polymers and to show a closer relationship between two fascinating worlds. The first chapter of the book acquaints the readers with synthetic strategy of "annealed," "quenched" and "zwitterionic" polyampholytes. Radical copolymerization, chemical modification and radiation-chemical polymerization methods are thoroughly considered. Kinetics and mechanism of formation of random, alternating, graft, di-block or tri-block sequences is discussed. The second chapter deals with behavior of polyampholytes in solutions."

30 years ago, polymer processing was considered to be a set of operations aiming at imparting a desired shape to the material, while its final properties were defined exclu sively by the molecular structure and architecture resulted from the respective synthetic approaches. These two fields of knowledge - polymer processing and polymer structure - grew closer as several scientific and technological works disclosed the microstructure and other morphological features developed by polymeric systems upon different process ing conditions. Even before the real understanding of the polymer structural details, engineers were able to make use of the effect of molecular orientation and to manufacture polymeric fi bres with enhanced properties in terms of stiffness and strength. However, it was during the 1970s that the scientific community started to relate microstructure development and the thermomechanical environment associated to different processing techniques. Ever since, very important works were done on semi crystalline, amorphous or blended polymers in order to identify and, recently, to predict the effect of the imposed shear fields and cool ing gradients on the final product properties. These efforts led to more accurate process ing methods and stimulated new engineering approaches, such as property enhancement through out-of-the-processing as well as on-line control. Modem processing technology has developed further towards the nano level, enabling impacts on the macromolecular structure."

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Polymer science is fundamentally interdisciplinary, yet specialists in one aspect, such as chemistry or processing, frequently encounter difficulties in understanding the effects of other disciplines on their own. This book describes clearly how polymer chemistry and polymer processing interact to affect polymer properties. As such, specialists in both disciplines can gain a deeper understanding of how these subjects underpin each other. Coverage includes step-by-step introductions to polymer processing technologies; details of fluid flow and heat transfer behaviour; shaping methods and physical processes during cooking and curing, and analyses of moulding and extrusion processes.