International law is often manipulated in the debate about humanitarian intervention. The Liberian case provides an opportunity to challenge the UN and The Economic Community of West African States' (ECOWAS') new approach. ECOWAS and the UN's justifications for moving away from the current norms are flawed. No enlightened person would disagree with the values of peace, democracy, human rights, and economic development. This book, however, explores whether these goals be pursued within the current framework or outside it.

This important book is an overall analysis of different innovative methods and ways of recycling in connection with various types of materials. It aims to provide a basic understanding about polymer recycling and its reuse as well as presents an in-depth look at various recycling methods. It provides a thorough knowledge about the work being done in recycling in different parts of the world and throws light on areas that need to be further explored. Emphasizing eco-friendly methods and recovery of useful materials The book covers a wide variety of innovative recycling methods and research, including * Green methods of recycling * Effective conversion of biomass and municipal wastes to energy-generating systems * A catalyst for the reuse of glycerol byproduct * Methods of adsorption to treat wastewater and make it suitable for irrigation and other purposes * Disposal of sludge * The use of calcined clay to replace both fine and coarse aggregates * Recycling of rubbers * The production of a sorbent material for paper mill sludge * Replacing polypropylene absorbent in oil spill sanitations * The use of natural fibers for various industrial applications * Cashew nut shell liquid as a source of surface active reagents * Integrated power and cooling systems based on biomass * Recycling water from household laundering * much more

How easy life would be if only moldings were the same size and shape as the mold. But they never are, as molders, toolmakers, designers and end users know only too well. Shrinkage means that the size is always different; warpage often changes the shape too. The effects are worse for some plastics than others. Why is that? What can you do about it? The Handbook of Molded Part Shrinkage and Warpage is the first and only book to deal specifically with this fundamental problem. Jerry Fischer s Handbook explains in plain terms why moldings shrink and warp, shows how additives and reinforcements change the picture, sets out the effect of molding process conditions, and explains why you never can have a single correct shrinkage value. It goes on to demonstrate how to alleviate the problem through careful design of the molded part and the mold, and by proper material selection. It also examines computer-aided methods of forecasting shrinkage and warpage. And most important of all, the Handbook gives you the data you need to work with.

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Authoritative and rooted in extensive industrial experience, the expert guidance contained in this handbook offers practical understanding to novices, and new insights to readers already skilled in the art of injection molding and mold making.Contains the answers to common problems and detailed advice on how to control mold and post-mold shrinkage and warpage.Case Studies illustrate and enrich the text; Data tables provide the empirical data that is essential for success, but hard to come by. "

Graphite, Graphene, and Their Polymer Nanocomposites presents a compilation of emerging research trends in graphene-based polymer nanocomposites (GPNC). International researchers from several disciplines share their expertise about graphene, its properties, and the behavior of graphene-based composites. Possibly the first published monograph of its kind, this book provides a comprehensive snapshot of graphite, graphene, and their PNCs, including the underlying physics and chemistry, and associated applications. Beginning with an introduction to natural and synthetic graphite, the precursors to graphene, the text describes their properties, characterization techniques, and prominent commercial applications. The focus then moves to graphene and its unique features, and techniques for its characterization. The chapters cover advances in electrochemical exfoliation of graphite, as well as exfoliation routes to produce graphene and graphite nanoplatelets for polymer composites. They also explore commercial use of graphene-based materials, such as emerging clean energy and pulse laser applications, and use as nanofillers in epoxy-based composites. The authors provide an overview of nanofillers and address two methods for GPNC preparation as well as specialized properties of GPNC. With its multidisciplinary approach, this book provides a broader scientific and engineering perspective necessary for meaningful advancements to take place.

The addition of nanoparticles to polymer composites has led to a new generation of composite materials with enhanced and novel properties. Advances in polymer nanocomposites reviews the main types of polymer nanocomposites and their applications.
Part one reviews types of polymer nanocomposites according to fillers. Processing of carbon nanotube-based nanocomposites, layered double hydroxides (LDHs) and cellulose nanoparticles as functional fillers and reinforcement are discussed, alongside calcium carbonate and metal-polymer nanocomposites. Part two focuses on types of polymer nanocomposites according to matrix polymer, with polyolefin-based, (PVC)-based, nylon-based, (PET)-based and thermoplastic polyurethane (TPU)-based polymer nanocomposites discussed. Soft, gel and biodegradable polymer nanocomposites are also considered. Part three goes on to investigate key applications, including fuel cells, aerospace applications, optical applications, coatings and flame-retardant polymer nanocomposites.
With its distinguished editor and international team of expert contributors, Advances in polymer nanocomposites is an essential guide for professionals and academics involved in all aspects of the design, development and application of polymer nanocomposites.
Reviews the main types of polymer nanocomposites and their applicationsDiscusses processing of carbon nanotube-based nanocomposites, layered double hydroxides (LDHs) and cellulose nanoparticles as functional fillers and reinforcementDiscusses polyolefin-based, (PVC)-based, nylon-based, (PET)-based and thermoplastic polyurethane (TPU)-based polymer nanocomposites

Biopolymers and Biodegradable Plastics are a hot issue across the Plastics industry, and for many of the industry sectors that use plastic, from packaging to medical devices and from the construction indusry to the automotive sector.

This book brings together a number of key biopolymer and biodegradable plastics topics in one place for a broad audience of engineers and scientists, especially those designing with biopolymers and biodegradable plastics, or evaluating the options for switching from traditional plastics to biopolymers.

Topics covered include preparation, fabrication, applications and recycling (including biodegradability and compostability). Applications in key areas such as films, coatings controlled release and tissue engineering are discussed.

Dr Ebnesajjad provides readers with an in-depth reference for the plastics industry - material suppliers and processors, bio-polymer producers, bio-polymer processors and fabricators - and for industry sectors utilizing biopolymers - automotive, packaging, construction, wind turbine manufacturers, film manufacturers, adhesive and coating industries, medical device manufacturers, biomedical engineers, and the recycling industry.
Essential information and practical guidance for engineers and scientists working with bioplastics, or evaluating a migration to bioplastics.Includes key published material on biopolymers, updated specifically for this Handbook, and new material including coverage of PLA and Tissue Engineering Scaffolds.Coverage of materials and applications together in one handbook enables engineers and scientists to make informed design decisions.

Natural Polymers, Biopolymers, Biomaterials, and Their Composites, Blends, and IPNs focuses on the recent advances in natural polymers, biopolymers, biomaterials, and their composites, blends, and IPNs. Biobased polymer blends and composites occupy a unique position in the dynamic world of new biomaterials. The growing need for lubricious coatings and surfaces in medical devices-an outcome of the move from invasive to noninvasive medicines/procedures-is playing a major role in the advancement of biomaterials technology. Natural polymers have attained their cutting-edge technology through various platforms, yet there is a lot of novel information about them that is discussed in the book. This important work covers topics such as chitosan composites for biomedical applications and wastewater treatment, coal biotechnology, biomedical and related applications of second generation polyamidoamines, silk fibers, PEG hydrogels, bamboo fiber reinforced PE composites, jute/polyester composites, magnetic biofoams, and many other interesting aspects of importance to polymer research today.

As an area of high topical interest , Biopolymers New materials for Sustainable Films and Coatings covers the development and utilization of polymers derived from bioresources, with a particular focus on film and coating applications. With growing concern for the environment and the rising price of crude oil, there is increasing demand for non-petroleum-based polymers from renewable resources. Leading research groups worldwide in industry and academe are working on such technology with the objective of applying the latest advances in the field. Written by well-respected experts, this text systematically covers the extraction and production of selected biopolymers as well as their properties and application as films or coatings in a variety of uses. The areas addressed include food packaging, edible coatings, paper coatings and agricultural films. Intended for researchers and students, this book will also be of interest to industry, especially in terms of the practical applications.

This book focuses on exciting new research in polymer science. The first section of the book deals with new advancements in polymer technology, which includes polymers that are responsible for progress in the field of energy, electronics, and medical sciences. It focuses on the most promising polymer nanocomposites and nanomaterials. Composites are becoming more important because they can help to improve quality of life. The second section of the book highlights this aspect of macromolecules, while the third section emphasizes biopolymers, their development, and applications.

PEEK biomaterials are currently used in thousands of spinal fusion patients around the world every year. Durability, biocompatibility and excellent resistance to aggressive sterilization procedures make PEEK a polymer of choice, replacing metal in orthopedic implants, from spinal implants and hip replacements to finger joints and dental implants.

This Handbook brings together experts in many different facets related to PEEK clinical performance as well as in the areas of materials science, tribology, and biology to provide a complete reference for specialists in the field of plastics, biomaterials, medical device design and surgical applications.

Steven Kurtz, author of the well respected "UHMWPE Biomaterials Handbook" and Director of the Implant Research Center at Drexel University, has developed a one-stop reference covering the processing and blending of PEEK, its properties and biotribology, and the expanding range of medical implants using PEEK: spinal implants, hip and knee replacement, etc.

Covering materials science, tribology and applications, Kurtz provides a complete reference for specialists in the field of plastics, biomaterials, biomedical engineering and medical device design and surgical applications.

In this important volume, the structures and functions of these advanced polymer and composite systems are evaluated with respect to improved or novel performance, and the potential implications of those developments for the future of polymer-based composites and multifunctional materials are discussed. It focuses exclusively on the latest research related to polymer and composite materials, especially new trends in frontal polymerization and copolymerization synthesis, functionalization of polymers, physical properties, and hybrid systems. Several chapters are devoted to composites and nanocomposites.

Elastomer-Based Composite Materials: Mechanical, Dynamic, and Microwave Properties and Engineering Applications is focused on elastomer-based composite materials comprising different types of reinforcing fillers. The book provides an informative examination of the possibilities for broadening the engineering applications of elastomer composites through using various types of hybrid fillers, ferrites, and ceramics, and also examines their synthesis and characterization. It discusses new hybrid fillers that have been synthesized by different techniques, e.g. impregnation of different substrates (carbon black, conductive carbon black, activated carbons, etc.) with silica or magnetite. These new fillers have been thoroughly characterized by standard techniques and by up-to-date methods, such as energy dispersive X-ray spectroscopy in scanning transmission electron microscopy (STEM-EDX), atomic absorption spectroscopy (AAS), and inductively coupled plasma-optical emission spectroscopy (ICP-OES). The effect of those fillers upon the curing properties, mechanical and dynamic parameters, electrical conductivity, and dielectric and microwave characteristics of elastomer-based composites is discussed in detail in this volume. The book also covers the influence of various types of ceramics (SiC, B4C, and TiB2) and barium and strontium hexaferrites upon the aforementioned properties of rubber composites in conjunction with a view toward solutions for environmental problems caused by waste tires. The book shows that pyrolysis-cum-water vapor is a suitable and environmentally friendly method for the conversion of the waste green tires into useful carbon-silica hybrid fillers. The properties of elastomer-based composites comprising different types of nanostructures (fullerenes, carbon nanotubes, graphene nanoplatelets), modified activated carbons, and calcined kaolin are also discussed. Special attention is paid to composites with lower levels of zinc oxide. The volume provides an abundance of knowledge on the detailed characterization of these fillers and on the curing, mechanical, dynamic mechanical, and dielectric and microwave properties of the elastomeric composites. The book surveys the most recent research activities of the authors, which will make it a vital reference source for scientists in both the academic and industrial sectors, as well as for individuals who are interested in rubber materials. It will be very useful for students, especially PhD students, scientists, lecturers, and engineers working or doing research in the field of polymer materials science, elastomer-based composites and nanocomposites and their engineering applications in the production of microwave absorbers and electromagnetic waves shielding materials, materials for electronics devices and telecommunications.

Globally, fire retardants are needed to satisfy a multibillion dollar market. Fire retardancy of polymeric materials is an important component of fire safety. Fire retardants either reduce the likelihood of ignition and/or reduce the rate of flame spread and hence, escalation of fire. The need to comply with safety legislations forces industry to use fire retardants in materials in order to save lives. With growing consumer demands and new legislations, the development of new systems is an on-going process, which also involves understanding their mechanisms of action. This book covers the latest developments in fire retardant strategies including: " new fire retardant systems (including nanoparticulate fillers, sometimes combined with conventional fire retardants) " intumescent formulations and their recent applications in bulk polymers, fibres and textiles " test-methods for material flammability " material-specific aspects of combustion, smoke and toxicity. Fire retardant strategies covered, include the use of synergistic combinations of alumina with organoclay, organophosphorus compunds, silica and organosilicones, clay-phosphate combinations and a novel tecnhique for investigating fire rerardant behaviour. The section on nanoparticulate fillers includes an investigation on the effect of filler shape, the use of carbon nanofibres and nanotubes, the interpretation of nanocomposite behaviour in the cone calorimeter, and groundbreaking new research on the influence of rheological properties on burning behaviour. The coverage of fibres and textiles includes a discussion on trends in textile fire retardancy and flammability regulations, and some novel halogen-free approaches to fire retardancy of cellulose, acrylic and polypropylene textiles. Finally, the influence of fire retardants on fire toxicity is discussed in detail, followed by an investigation of the toxic products from burning fire retarded polymer nanocomposites. This book will update fire retardant materials' developers with latest in research and design of new fire retardant materials. It will also provide a snapshot of the state-of-the-art for a range of other groups including environmentalists looking for alternatives to brominated flame retardants and engineers needing to use fire safe materials in their projects.

Practical and affordable, thermoplastics account for more than 90 percent of all plastic materials manufactured. That so many varieties are now available, speaks to the idea that while there is no one perfect material, it is possible to find a material that fits for every application. However, selecting that right material is no small challenge. Answering the needs of manufacturers and product developers, Thermoplastic Materials: Properties, Manufacturing Methods, and Applications provides all the information required to confidently select the right thermoplastic for any application. Based on a course taught to engineering students, the book starts with an overview of the plastics industry, looking at the major companies involved and how their products influence society. It then discusses various topics essential to the understanding and manufacturing of thermoplastics before getting to the core of the book, more than 400 pages of consistently formatted entries, organized according to 19 thermoplastics families and groupings. Each chapter covers raw materials, manufacturing methods, properties, costs, and applications. Among many topics related to thermoplastic resins, this seminal work: Provides micro and quasi-macro perspectives on their behavior Evaluates major manufacturing methods Discusses crystallinity and permeability Elaborates on the properties that make them useful barrier and packaging materials Written by Christopher Ibeh, professor of plastics engineering technology and director of the Center for Nanocomposites and Multifunctional Materials at Pittsburg State University, this book goes beyond current practices to look at emerging materials, including nanocomposites, and discusses sustainability as it relates to plastics. It also includes a chapter on functionalized thermoplastics, written by Andrey Beyle.

Dendrimers are a new class of macromolecule increasingly used in the fields of synthetic organic chemistry, biology, medicine and biotechnology. Dendrimers in Medicine and Biotechnology: New Molecular Tools looks at this exciting and rapidly growing area of science. Using an interdisciplinary approach with particular emphasis on biological applications, the book discusses the relationship between the dendrimer molecular motif and its biological properties. A general introduction to the subject of dendrimers, including definitions of terms and symbols, is provided. Subsequent sections discuss topics including dendrimers in biological systems, dendrimers as drug delivery devices, dendrimers in diagnostics and dendrimer drugs. Throughout the book examples from current research are also provided. This book will appeal to a wide range of scientists, including non specialists who require an introduction to dendrimers, as well as those wishing to know more about the application of dendrimers in the field of biology and medicine.

Whether you realize it or not, you are probably already a collector of plastic cups. Just look in your kitchen cabinets and you'll find those plastic cups you didn't realize you were even collecting. The popularity of collecting plastic cups is rapidly increasing due to the latest collaborated marketing efforts between the fast food restaurant and movie industries in promoting a blockbuster movie while selling soft drinks. Plastic cup collecting is no longer just a hobby. The increasing interest and rapid growth of this newest market clearly demands that information and prices be made available to the expanding group of knowledgeable and novice collectors. In over 150 full color photographs, Bryan Meccareillo provides a complete guide to these new collectibles.

This book presents the chemical properties of lignocellulosic fibers, knowledge of which is essential for innovation and sustainable development of their transformation. Thermochemical transformation of wood and other lignocellulosics is presented to highlight its volatile, liquid and solid products and their novel applications. Forest biorefinery is described to emphasize the new products from lignocellulosic constituents, both structural (cellulose, hemicelluloses and lignins) and those extraneous to cell walls-extractives. New developments in cellulose technology related to nanocellulose are discussed in relation to new applications. Industrial lignins are presented in detail, both in terms of extraction procedures from spent liquors and structural characterization of the isolated lignins. Application of lignocellulosic biopolymers in new composite materials, or in biomaterials for medicinal purposes, and in solid wood preservation, are described. The example of an industrial biorefinery installed in southwestern France more than 40 years ago is presented.

Hydrogels are crosslinked, macromolecular polymeric materials arranged in a three-dimensional network, which can absorb and retain large amounts of water. Hydrogels are commonly used in clinical practice and experimental medicine for a wide range of applications, including drug delivery, tissue engineering and regenerative medicine, diagnostics, cellular immobilization, separation of biomolecules or cells, and barrier materials to regulate biological adhesions. This book elucidates the underlying concepts and emerging applications of hydrogels and will provide key case studies and critical analysis of the existing research.

Analytical pyrolysis allows scientists to use routine laboratory instrumentation for analyzing complex, opaque, or insoluble samples more effectively than other analytical techniques alone. Analytical Pyrolysis Handbook, Third Edition is a practical guide to the application of pyrolysis techniques to various samples and sample types for a diversity of fields including microbiology, forensic science, industrial research, and environmental analysis. The much-anticipated third edition incorporates recent technological advances that increase the technique's sensitivity to trace elements, improve its reproducibility, and expand its applicability. The book reviews the types of instrumentation available to perform pyrolysis and offers guidance for interfacing instruments and integrating other analytical techniques, including gas chromatography and mass spectrometry. Fully updated with new sample pyrograms, figures, references, and real-world examples, this edition also highlights new areas of application including cultural materials, forensic analysis, and environmental studies. This book illustrates how the latest advances make pyrolysis a practical, cost-effective, reliable, and flexible alternative for increasingly complex sample analyses. Analytical Pyrolysis Handbook, Third Edition is an essential, one-stop guide for determining if pyrolysis meets application-specific needs as well as performing pyrolysis and handling the data obtained.

This new work, Functional Polymeric Composites: Macro to Nanoscales, focuses on new challenges, findings, opportunities, and applications in the area of polymer composites. The chapters, written prominent researchers from academia, industry, and research institutes from around the world, present contemporary research and developments on advanced polymeric materials, including polymer blends, polymer electrolytes, bio-based polymer, polymer nanocomposites, etc. Several chapters also cover the applications of the polymeric systems in current industry development and synthesis and characterization of the products.

This volume provides in-depth knowledge and recent research on polymers and nanostructured materials from synthesis to advanced applications. Leading researchers from industry, academia, government, and private research institutions across the globe have contributed to this volume, covering new research on nanocomposites, polymer technology, and electrochemistry.

The Handbook of Polyhydroxyalkanoates (PHA) focusses on and addresses varying facets of PHA biosynthesis and processing, spread across three volumes. The first volume discusses feedstock aspects, enzymology, metabolism and genetic engineering of PHA biosynthesis. It addresses better understanding the mechanisms of PHA biosynthesis in scientific terms and profiting from this understanding in order to enhance PHA biosynthesis in bio-technological terms and in terms of PHA microstructure. It further discusses making PHA competitive for outperforming established petrol-based plastics on industrial scale and obstacles for market penetration of PHA. This second volume focusses on thermodynamic and mathematical considerations of PHA biosynthesis, bioengineering aspects regarding bioreactor design and downstream processing for PHA recovery from microbial biomass. It covers microbial mixed culture processes and includes a strong industry-focused section with chapters on the economics of PHA production, industrial-scale PHA production from sucrose, next generation industrial biotechnology approaches for PHA production based on novel robust production strains, and holistic techno-economic and sustainability considerations on PHA manufacturing. Third volume is on the production of functionalized PHA bio-polyesters, the post-synthetic modification of PHA, processing and additive manufacturing of PHA, development and properties of PHA-based (bio)composites and blends, the market potential of PHA and follow-up materials, different bulk- and niche applications of PHA, and the fate and use of spent PHA items. Divided into fourteen chapters, it describes functionalized PHA and PHA modification, processing and their application including degradation of spent PHA-based products and fate of these bio-polyesters during compositing and other disposal strategies. Aimed at professionals and graduate students in Polymer (plastic) industry, wastewater treatment plants, food industry, biodiesel industry, this set: Presents comprehensive and holistic consideration of these microbial bioplastics in the volumes. Enables reader to learn about microbiological, enzymatic, genetic, synthetic biology, and metabolic aspects of PHA biosynthesis based on the latest scientific discoveries. Discusses design and operate a PHA production plant. Strong focus on post-synthetic modification, preparation of functional PHA and follow-up products, and PHA processing. Covers all related engineering considerations

This book is intended to serve as a "one-stop" reference resource for important research accomplishments in the area of nanostructured polymer membranes and their processing and characterizations. It will be a very valuable reference source for university and college faculties, professionals, post-doctoral research fellows, senior graduate students, and researchers from R&D laboratories working in the area of polymer nanobased membranes. The various chapters are contributed by prominent researchers from industry, academia and government/private research laboratories across the globe and comprise an up-to-date record on the major findings and observations in the field.

Derived from the fourth edition of the well-known "Plastics Technology Handbook," Plastics Fundamentals, Properties, and Testing covers the behavior, characterization, and evaluation of polymers. With a lucid approach and wealth of valuable information, this volume looks at the remarkable versatility of this nonmetallic class of materials.

Examining polymers at the molecular level, the book first discusses their inherent properties and how their end-use properties can be influenced through changes in the molecular architecture or incorporation of various fillers and additives. The authors coherently present a wide spectrum of topics by sequentially introducing structural aspects, properties, and applications. They then proceed to explore the mechanical, electrical, optical, and thermal properties of polymers, providing theoreticalderivations where necessary as well as explanations on molecular and structural features. To identify the principles involved, the book also furnishes the bases of many standard test methods according to ASTM and BS 2782 specifications.

This second volume of the "Handbook of Polyhydroxyalkanoates (PHA): Kinetics, Bioengineering and Industrial Aspects" focusses on thermodynamic and mathematical considerations of PHA biosynthesis, bioengineering aspects regarding bioreactor design and downstream processing for PHA recovery from microbial biomass. It covers microbial mixed culture processes and includes a strong industry-focused section with chapters on the economics of PHA production, industrial-scale PHA production from sucrose, next generation industrial biotechnology approaches for PHA production based on novel robust production strains, and holistic techno-economic and sustainability considerations on PHA manufacturing. Aimed at professionals and graduate students in Polymer (plastic) industry, wastewater treatment plants, food industry, biodiesel industry, this book Provides an insight into microbial thermodynamics to reveal the central domain governing in PHA formation, both aerobically and anaerobically. Includes systematic overview of mathematical modelling approaches, starting from low-structured and formal kinetic models until modern tools like metabolic models, cybernetic models and so forth Discusses challenges during scale up of PHA production processes and on development of non-sterile processes and contamination-resistant strains Presents a holistic picture of the current state of PHA research by mixed cultures Reviews the industry-related point of view about current and future trends in PHA production and processing