In the context of polymer crystallization there are several still open and often controversially debated questions. The present volume addresses issues such as novel general views and concepts which help to advance our understanding of polymer crystallisation, nucleation phenomena, long living melt structures affecting crystallization, confinement effects on crystallization, crystallization in flowing melts, fluid mobility restrictions caused by crystallites, the role of mesophases in the crystal formation and presents new ideas in a connected and accessible way. The intention is thus not only to provide a summary of the present state of the art to all active works but to provide an entry point to newcomer and graduate students entering the field.

Concerned primarily with the determination of the size of polymer molecules in solution, their sequence structure and also molecular weight characteristics, this book includes contributions relating to molecular weight and molecular weight characteristics using conventional chromatographic techniques, spectroscopic techniques describing determination of sequence structure, and scattering techniques concerned with the determination of macromolecular size.

The book will be invaluable for postgraduate and research polymer chemists and all those who are concerned with the study and use of macromolecular materials. The techniques described reflect some of the most recent advances which have been made in the development of methods for molar mass characterisation and also the size of molecules in solution and solid phases. The problem of molar mass characterisation is common to synthetic and biological polymers, hence this book will also be of interest to biologists, polymer engineers and technologists. Techniques covered include: Temperature Rising Elution Fractionation Field Flow Fractionation Static and Dynamic Light Scattering Neutron Scattering Vapour Pressure Osmometry/Viscometry Ultrafugation and Sedimentation Gel Electrophoresis of Biological Macromolecules Mass Spectrometry of Polymers

This book provides information about the sources, structure, and properties of keratin as well as its applications. The extraction from different biomass sources (e.g. feathers, hairs, nails, horn, hoof, and claws) as well as the characterization methods of these extracted materials are explained. The development of bioproducts from keratins is challenging and limited since they are neither soluble in polar solvents nor in non-polar solvents. Therefore, the utilization of different microorganisms for the degradation of keratin is also discussed. The main aim of this book is to highlight the unique features of keratin and to update readers with the possible prospects to develop various value-added products from keratins. The book is highly interesting to researchers working in industry and academia on bioproducts, tissue engineering, biocomposites, biofilm, and biofibers.

The long-awaited Third Edition of the classic in polymer synthesis

Thirty years ago, the Second Edition of Preparative Methods of Polymer Chemistry further established its reputation as the laboratory bible for polymer synthesis. The last three decades have witnessed a deeper understanding of the principles involved in preparing and processing polymers, leading to tremendous advances in polymer synthesis. Guiding practicing scientists through the methods of synthesizing polymers, the Third Edition retains theory and vital protocols, while revising and updating the sections on synthesis, fabrication techniques, and characterization methods.

Delving into the physical and chemical aspects of polymer processing, each chapter includes a discussion of the relevant background and principles, enabling the scientist to apply synthetic techniques intelligently. The Third Edition also contains sections on current topics such as:

• Extended-chain polymer technology
• High-temperature and high-performance polymers
• Carbon fibers
• Electrically conductive polymers
• Group-transfer polymerization
• Composites

Preparative Methods of Polymer Chemistry, Third Edition provides essential information for both students and practicing polymer scientists.

This book summarizes the results of years of research on the problem of strength and fracture of polymers and elastomers. It sets out the modern approach to the strength theory from the standpoint of fractals, the kinetic and thermodynamic theories as well as the meso-mechanic destruction. The dimension reduction method is applied to model the friction processes in elastomers subjected to the complex dynamic loading. Finally, it analyses a relation between the fracture mechanism and the relation phenomena, and provides new experimental data on the sealing nodes in accordance with their specific working conditions where the effect of self-sealing is observed.

Thermoplastic matrix composites have attracted much attention in the composites industry due to their easy processibility and improved impact properties. Although there are many books on thermoplastic composites available, none emphasize flexible towpregs and their composite properties. This book discusses various methods of manufacturing flexible towpregs, their properties, their textile preforming behavior, the properties of textile preform, and the properties of final composites. FEATURES Gives readers a complete view of composite manufacturing Offers details on flexible prepregs that other books overlook, such as manufacturing methods, influence of processing parameters, and properties Includes explanations that cover all steps of manufacturing with examples Features case studies and homework exercises for all chapters to reinforce understanding Provides technological information, discussion, and analysis of problems related to all types of flexible towpregs, such as commingling, electrostatic powder coating, wrapped hybrid yarns, micro-braided hybrid yarns, core-spun hybrid yarns, and others This book is aimed at readers working with composite materials, industrial textiles, and related areas to understand the significance of thermoplastic composites made through textile performance of flexible towpregs.

Written by a pioneer in the development of spin labeling in biophysics, this expert book covers the fundamentals of nitroxide spin labeling through cutting-edge applications in chemistry, physics, materials science, molecular biology, and biomedicine. Nitroxides have earned their place as one of the most popular organic paramagnets due to their suitability as inhibitors of oxidative processes, as a means to polarize magnetic nuclei, and, in molecular biology, as probes and labels to understand molecular structures and dynamics AS DRAGS FOR CANCER AND OTHER DISEASES. Beginning with an overview of the basic methodology and nitroxides' 145-year history, this book equips students with necessary background and techniques to undertake original research and industry work in this growing field.

Morphology- Property Relationship in Rubber-Based Nanocomposites: Some Recent Developments, by A. K. Bhowmick, M. Bhattacharya, S. Mitra, K. Dinesh Kumar, P. K. Maji, A. Choudhury, J. J. George and G. C. Basak; * Rubber- Clay Nanocomposites: Some Recent Results, by Amit Das, De-Yi Wang, Klaus Werner St ckelhuber, Ren Jurk, Juliane Fritzsche, Manfred Kl ppel and Gert Heinrich; * Surface Modification of Fillers and Curatives by Plasma Polymerization for Enhanced Performance of Single Rubbers and Dissimilar Rubber/Rubber Blends, by J. W. M. Noordermeer, R. N. Datta, W. K. Dierkes, R. Guo, T. Mathew, A. G. Talma, M. Tiwari and W. van Ooij; * Recent Developments on Thermoplastic Elastomers by Dynamic Vulcanization, by R. Rajesh Babu and Kinsuk Naskar; * PTFE-Based Rubber Composites for Tribological Applications, by M. S. Khan and G. Heinrich Content Level Research

It covers the synthesis, characterizations, and properties of natural polymeric systems, including their morphology, structure, and dynamics. It introduces the most recent innovations and applications of natural polymers and their composites in the food, construction, electronics, biomedical, pharmaceutical, and engineering industries.

"Biodegradable Composites for Packaging Applications" describes design, processing, and manufacturing of advanced biodegradable composites in packaging industry applications. It covers fundamentals of biodegradable polymers followed by introduction to biodegradable materials for food packaging industry and its processing mechanisms. Pertinent applications are explained across different chapters including intelligent packaging, applied technologies, degradation problems and its impact on environment and associated challenges. Features Covers biodegradable composites and targeted applications in packaging for industrial applications. Includes exhaustive processing and characterizations of biodegradable composites. Discusses innovative commodities packaging applications. Reviews advanced integrated design and fabrication problems for conductive and sensors applications. Explores various properties and functionalities through extensive theoretical and experimental modeling. This volume is aimed at researchers and graduate students in sustainable materials, composite technology, biodegradable plastics, and food technology and engineering.

The series Advances in Polymer Science presents critical reviews of the present and future trends in polymer and biopolymer science. It covers all areas of research in polymer and biopolymer science including chemistry, physical chemistry, physics, material science.The thematic volumes are addressed to scientists, whether at universities or in industry, who wish to keep abreast of the important advances in the covered topics.Advances in Polymer Science enjoys a longstanding tradition and good reputation in its community. Each volume is dedicated to a current topic, and each review critically surveys one aspect of that topic, to place it within the context of the volume. The volumes typically summarize the significant developments of the last 5 to 10 years and discuss them critically, presenting selected examples, explaining and illustrating the important principles, and bringing together many important references of primary literature. On that basis, future research directions in the area can be discussed. Advances in Polymer Science volumes thus are important references for every polymer scientist, as well as for other scientists interested in polymer science - as an introduction to a neighboring field, or as a compilation of detailed information for the specialist.Review articles for the individual volumes are invited by the volume editors. Single contributions can be specially commissioned.Readership: Polymer scientists, or scientists in related fields interested in polymer and biopolymer science, at universities or in industry, graduate students.

This book is the second edition of Soft Actuators, originally published in 2014, with 12 chapters added to the first edition. The subject of this new edition is current comprehensive research and development of soft actuators, covering interdisciplinary study of materials science, mechanics, electronics, robotics, and bioscience. The book includes contemporary research of actuators based on biomaterials for their potential in future artificial muscle technology. Readers will find detailed and useful information about materials, methods of synthesis, fabrication, and measurements to study soft actuators. Additionally, the topics of materials, modeling, and applications not only promote the further research and development of soft actuators, but bring benefits for utilization and industrialization. This volume makes generous use of color figures, diagrams, and photographs that provide easy-to-understand descriptions of the mechanisms, apparatus, and motions of soft actuators. Also, in this second edition the chapters on modeling, materials design, and device design have been given a wider scope and made easier to comprehend, which will be helpful in practical applications of soft actuators. Readers of this work can acquire the newest technology and information about basic science and practical applications of flexible, lightweight, and noiseless soft actuators, which differ from conventional mechanical engines and electric motors. This new edition of Soft Actuators will inspire readers with fresh ideas and encourage their research and development, thus opening up a new field of applications for the utilization and industrialization of soft actuators.

Styrenic polymers encompass a broad range of types from commodity plastics to engineering polymers. Early polystyrenes - whilst having many favourable attributes such as outstanding clarity, high gloss, ease of processability and low cost - suffered from brittleness and poor chemical resistance. Today there exists a variety of new polymers, copolymers and blends that enable styrenic polymers to be used in ever growing and more demanding applications. Styrenic polymers now find widespread use in areas from packaging materials right through to structural components for domestic and automotive applications.

This book serves as the first comprehensive reference to systematically cover the preparation, properties and applications of this important class of polymers. Major end-use consideration of styrenic polymers such as fracture properties, flammability and photodegradation are covered in detail. This book also describes the latest advances from new polymerization technologies to novel polymer architectures. The book is truly international in its scope, with 31 contributions from leading experts in North America, South America, Europe, Japan and Australia.

With over 15 chapters written by The Dow Chemical Company and some five chapters by BASF, this book provides an authoritative and comprehensive treatment by contemporary experts from the leading companies engaged in the commercial manufacture, research and development of styrenic polymers.

This volume explains cleaning of cotton after blow room treatment and individualization process in conventional card including functions related to licker-in, cylinder, and doffer, and so forth. Description of modern card includes improved cleaning at higher production rates and individualization at such higher rates. Larger part of the book is devoted to drawing of the sliver and relative description for any modern machine including on-line controls and introduction of indicator lamp system to improve both machine and labour efficiency is discussed as well. This volume also includes the related calculation for both card and draw frame. Focuses on modern carding processes, functions, and attachments. Includes chapters on defects in carding and drawn material and related calculations. Highlights the features of modern draw frame, especially the drafting system. Discusses automation and processes of modern carding machines for improving machine efficiency. Describes drafting and doubling including drafting as basic processes of spinning. This volume is aimed at senior undergraduate/Graduate students in Textile Engineering, staple fibre processing, spinning of staple fibres.

Polymeric Foams: Innovations in Technologies and Environmentally Friendly Materials offers the latest in technology and environmental innovations within the field of polymeric foams. It outlines how application-focused research in polymeric foam can continue to improve living quality and enhance social responsibility. This book: Addresses technological innovations including those in bead foams, foam injection molding, foams in tissue engineering, foams in insulation, and silicon rubber foam Discusses environmentally friendly innovations in PET foam, degradable and renewable foam, and physical blowing agents Describes principles as well as applications from internationally recognized foam experts This work is aimed at researchers and industry professionals across chemical, mechanical, materials, polymer engineering, and anyone else developing and applying these advanced polymeric materials.

Porous Polymer Science and Applications aims to provide recent developments and advances in synthesis, tuning parameters, and applications of porous polymers. This book brings together reviews written by highly accomplished panels of experts working in the area of porous polymers. It encompasses basic studies and addresses topics of novel issues concerning the applications of porous polymers. Chapter topics span basic studies, novel issues, and applications addressing all aspects in a one-stop reference on porous polymers. Applications discussed include catalysis, gas storage, energy and environmental sectors making this an invaluable guide for students, professors, scientists and R&D industrial experts working in the field of material science and engineering and particularly energy conversion and storage. Additional features include: Provides a comprehensive introduction to porous polymers addressing design, synthesis, structure, properties and characterization. Covers task-specific applications of porous polymers. Explores the advantages and opportunities of these materials for most major fields of science and engineering. Outlines novel research areas and potential development and expansion areas.

This new volume, Natural Polymers for Pharmaceutical Applications, Volume 1: Plant-Derived Polymers, presents some of the latest research on the applications of natural polymers in drug delivery and therapeutics for healthcare benefits. Polymers and their applications from several plants are discussed in depth, including tamarind gum, gum Arabic, natural carbohydrate polymer gum tragacanth, pectin, guar gum and its derivatives, locust bean gum, sterculia gum, okra gum, and others. The use of the polymers derived from plants as potential pharmaceutical excipients is expanding day by day because of their stability in the biological system, drug-releasing capability, drug-targeting abilities, as well as their bioavailability.

Many polymers derived from various marine sources and microorganisms possess some important biological properties such as biocompatibility, biodegradability, and bioadhesivity that make them attractive as pharmaceutical excipients in various pharmaceutical dosage forms. Moreover, these polymers can be modified physically and/or chemically to improve their biomaterial properties. In this volume, Natural Polymers for Pharmaceutical Applications, Volume 2: Marine- and Microbiologically Derived Polymers, looks at how these polymers have been explored and exploited for pharmaceutical uses, such as in tablets, microparticles, nanoparticles, ophthalmic preparations, gels, emulsions, suspensions, etc. Some commonly used marine- and microbiologically derived polymers used as pharmaceutical excipients include alginates, agar-agar, gellan gum, carrageenan; chitosan, xanthan gum, and others. The book focuses on important recent advances from experts around the world on marine-derived polysaccharides and pharmaceutical applications of alginates, agar-agar, gellan gum, carrageenan, chitosan derivatives, xanthan gum.

Biopolymers represent a carbon emission solution: they are green and eco-friendly with a variety of uses in biomedical engineering, the automotive industry, the packaging and paper industries, and for the development of new building materials. This book describes the various raw materials of biopolymers and their chemical and physical properties, the polymerization process, and the chemical structure and properties of biopolymers. Furthermore, this book identifies the drawbacks of biopolymers and how to overcome them through modification methods to enhance the compatibility, flexibility, physicochemical properties, thermal stability, impact response, and rigidity.

Polymers and Nanomaterials for Gene Therapy provides the latest information on gene therapy, a topic that has attracted significant attention over the past two decades for the treatment of inherited and acquired genetic diseases. Major research efforts are currently focused on designing suitable carrier vectors that compact and protect oligonucleotides for gene therapy. The book explores the most recent developments in the field of polymer science and nanotechnology, and how these advancements have helped in the design of advanced materials. Non-viral vector systems, including cationic lipids, polymers, dendrimers, peptides and nanoparticles, are potential routes for compacting DNA for systemic delivery. However, unlike viral analogues that have no difficulty in overcoming cellular barriers and immune defense mechanisms, non-viral gene carriers consistently exhibit significant reduced transfection efficiency due to numerous extra- and intracellular obstacles. Therefore, biocompatibility and potential for large-scale production make these compounds increasingly attractive for gene therapy. This book contains chapters on the engineering of polymers and nanomaterials for gene therapy, and how they can form complexes with DNA and avoid both in vitro and in vivo barriers. Other chapters describe in vitro, ex vivo, in vivo gene therapy studies, and the current issues affecting non-viral gene therapy.

Chitosan in the Preservation of Agricultural Commodities presents a cohesive overview of research topics regarding the production and characterization of chitosan, the development of coatings and fi lms, its functional properties, and antimicrobial potential of this compound on economically important agricultural commodities. It includes the modes of action from a physiological, enzymatic, and molecular perspective, and evaluations of the activity of chitosan nanocomposites and nanoparticles in biological models. The first section deals with the chemical characteristics and functional properties of chitosan and new chitosan-based biomaterials intended for food preservation. The second section covers various aspects of the control achieved by chitosan on different microorganisms affecting various horticultural commodities, grains, and ornamentals, and its modes of action. The third section explores enzymatic and gene expression induction by chitosan application on fruit and vegetables; the fourth section offers insight on the use of chitosan nanocomposites in biological models associated with food conservation and control of microorganisms.

For more than 60 years, The Alkaloids has been the leading book series in the field of alkaloid chemistry. In more than 70 volumes all aspects of alkaloids, including chemistry, biology and pharmacology, have been covered in high-quality timeless reviews written by renowned experts in the field.

This book introduces the reader to thermal field-flow fractionation and discusses its advantages over the fundamental problems associated with traditional column-based analytical techniques commonly used to characterize polymers and macromolecules. The authors discuss the theoretical background, equipment, experimental procedures as well as the recent advances and applications of thermal field-flow fractionation. Complete with several practical examples and troubleshooting guidelines, the book is written for beginners and experienced separation scientists alike and will enable its readers to optimize their experimental conditions for their specific separation needs and problems.

While books have been written on many topics of Polymer Science,no comp- hensive treatise o n l ong-chain b ranching has e ver b een c omposed.This se ries o f reviews in Volume 142 an d 143 o f Advances in P olymer Science tries to fill this gap by highlighting active areas of research on branched polymers. Long-chain branching is a p henomenon observed in s ynthetic polymers and in some natural polysaccharides.It has l ong been r ecognized as a ma jor molecular parameter of macromolecules.Its presence was first surmised by H.Staudinger and G.V.Schulz (Ber.68,2320,1935).Interestingly,their method of identifica- on b y m eans o f the a bnormal r elation b etween in trinsic viscosity an d mo lecular weight has s urvived to this day.Indeed,the most sophisticated method for a- lysis o f long-chain b ranching use s size ex clusion fractionation with the simul- neous recording of mass,molecular weight and intrinsic viscosity of the fr- tions.