Polymers have been used in agriculture and horticulture since the middle of the last century. There is a tremendous potential for using polymers in agriculture and our fields and garden would look very different if we did not use polymers in them. This review traces the history of polymer use, discusses the markets for polymers in these applications, and describes in detail the different types of polymers that can be used and their specific applications. An additional indexed section containing several hundred abstracts from the Polymer Library gives useful references for further reading.

The use of plastics in agriculture – to increase crop output, improve food quality and improve sustainability – has grown substantially in both quantity and the range of applications. Many of the early researchers that conducted field research in the use of plastics in agriculture have either retired or are deceased. These early pioneers in plasticulture research, the basis of plant production using plastics, were very creative and persistent in discovering uses of plastics in agricultural applications. A Guide to the Manufacture, Performance, and Potential of Plastics in Agriculture contains both references not only to their accomplishments but also their publications. The book discusses plasticulture-the basis of plant production using plastics – including topics such as plastic mulch, row covers, drip irrigation, and high/low tunnels. It covers the process of producing polyethylene and polypropylene plastics that are used in plant and animal production agriculture, and the many uses of plastics in all aspects of agriculture, including plastic greenhouses, rigid mold plastics, disposal of plastics, and plastics in animal production. This book introduces a range of academics and industrial practitioners to the impact of plastics in agriculture, both historically and in a range of current applications. It also provides new perspectives on future developments to enable further research and application. It is an invaluable reference on the use of polyethylene, polypropylene films, and such products in all aspects of agricultural production. - Discusses plasticulture, the basis of plant production using plastics, including topics such as plastic mulch, row covers, drip irrigation, and high/low tunnels - Contains 10 chapters that cover the process of producing polyethylene and polypropylene plastics that are used in agriculture - Covers the many uses of plastics in all aspects of agriculture, including plastic greenhouses, rigid mold plastics, disposal of plastics, and plastics in animal production

Natural polymers, such as proteins, starch, cellulose, hevea rubber, and gum which have been available for centuries, have been applied as materials for food, leather, sizings, fibers, structures, waterproofing, and coatings. During the past century, the use of both natural and syn thetic polymers has been expanded to include more intricate applications, such as membranes, foams, medicinals, conductors, insulators, fibers, films, packaging and applications requiring high modulus at elevated temperatures. The topics in this symposium which are summarized in this book are illustrative of some of the myriad applications of these ubiquitous mater ials. As stated in forecast in the last chapter in this book, it is cer tain that revolutionary applications of polymers will occur during the next decades. Hopefully, information presented in other chapters in this book will catalyze some of these anticipated applications. It is appropriate that these reports were presented at an American Chemical Society Polymer Science and Engineering Division Award Symposium honoring Dr. O.A. Battista who has gratifying to note that Phillips Pet roleum Company, which has paved the way in applications of many new poly mers, is the sponsor of this important award. We are all cheerfully expressing our thanks to this corporate spon sor and to Distinguished Professor Raymond B. Seymour of the University of Southern Mississippi who served as the organizer of this symposium and editor of this important book.

Polymer–Polymer Miscibility discusses miscibility of polymeric mixtures. This book explains the theoretical and practical aspects of polymer miscibility, which has become a considerable area of research in many academic and industrial laboratories. Comprised of seven chapters, this book starts with an overview of the physical nature of the variations of the basic polymer structure. This monograph then discusses the two cases of miscible polymer blends, namely, poly(vinyl chloride) (PVC)–butadiene/acrylonitrile copolymer (NBR) and polystyrene–poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) blends. This text explores the useful and unique properties of blends of poly(vinyl chloride) and butadiene/acrylonitrile copolymer rubber. Other chapters discuss the thermodynamic theories for the phase separation of block copolymers. The reader is also introduced to other variations of chemical structure, which can result in the permanent attachment of polymers to each other through block and graft copolymers. This text also explores the feasibility of covalent bonding of polymer components. This book is intended for chemical engineers and materials scientists.

Synthetic and semi-synthetic polymeric materials were originally developed for their durability and resistance to all forms of degradation including biodegradation. Such materials are currently widely accepted because of their ease of processability and amenability to provide a large variety of cost effective items that help to enhance the comfort and quality of life in the modern industrial society. However, this widespread utilization of plastics has contributed to a serious plastic waste burden, and the expectation for the 21st century is for an increased demand for polymeric material. This volume focuses on a more rational utilization of resources in the fabrication, consumption and disposal of plastic items, specifically: -Environmentally Degradable Polymeric Materials (EDPs); -Water-soluble/Swellable Biodegradable Polymers; -EDPs from Renewable Resources; -Biopolymers; -Bioresorbable Materials for Biomedical Applications; -Biorelated Polymers; -Standards and Regulations on EDPs.

The purpose of this book will be to demonstrate 1) the newly developed method of using reactive functionalized materials in agriculture to solve the economic and public health problems associated with using conventional agrochemicals; and 2) new technology aimed at achieving the greening of chemistry to meet appropriate environmental standards in both agriculture and industrial foodstuffs production. More specifically, the book will accomplish this goal by addressing 3 key issues in the field: 1) the production of reactive functionalized materials with enhanced properties that offer a major opportunity to overcome the disadvantages of using traditional materials; 2) the applications of functionalized materials in agriculture for the purpose of solving the economic and the environmental pollution problems associated with the uses of conventional agrochemicals; and 3) the contribution of polymers in solving problems associated with conventional procedures of food growth and processing, including those used in the dairy industry, sugar and fruit juices, beer and wine production, nutritive and nonnutritive food additives, and in food protection.

Compostable Polymer Materials, Second Edition, deals with the environmentally important family of polymers designed to be disposed of in industrial and municipal compost facilities after their useful life. These compostable plastics undergo degradation and leave no visible, distinguishable, or toxic residue. Environmental concerns and legislative measures taken in different regions of the world make composting an increasingly attractive route for the disposal of redundant polymers.This book covers the entire spectrum of preparation, degradation, and evironmental issues related to compostable polymers. It emphasizes recent studies concerning compostability and ecotoxilogical assessment of polymer materials. It descibes the thermal behavior, including flammability properties, of compostable polymers. It also explores possible routes of compostable polymers waste disposal through an ecological lens. Finally, the book examines the economic factors at work, including price evolution over the past decade, the current market, and future perspectives. Compostable Polymer Materials is an essential resource for graduate students and scientists working in chemistry, materials science, ecology, and environmental science. - Provides a comprehensive study of the composting process - Details methods of compostable polymers preparation, including properties, processing and applications - Presents the state-of-the-art knowledge on ecotoxicity testing and biodegradation under real composting conditions of compostable polymers, as well as biodegradation in various environments, such as marine environments and anaerobic conditions - Discusses the evolution of waste management in Europe and the United States, as well as the status of MSW disposal and treatment methods in countries such as China and Brazil - Overviews biodegradation studies under real composting conditions of products made of compostable polymers, e.g. bags, bottles, cutletry - Analyzes evolution of market development, including price of compostable polymers during the last decade

Derived from the fourth edition of the well-known Plastics Technology Handbook, Industrial Polymers, Specialty Polymers, and Their Applications covers a wide range of general and special types of polymers

Salinity and water stress limit crop productivity worldwide and generate substantial economic losses each year, yet innovative research on crop and natural resource management can reveal cost-effective ways in which farmers can increase both their productivity and their income. Presenting recent research findings on salt stress, water stress and stress-adapted plants, this book offers insights into new strategies for increasing the efficiency of crops under stressful environments. The strategies are based on conventional breeding and advanced molecular techniques used by plant physiologists, and are discussed using specific case studies to illustrate their potential. The book emphasizes the effects of environmental factors on specific stages of plant development, and discusses the role of plant growth regulators, nutrients, osmoprotectants and antioxidants in counteracting their adverse affects. Synthesising updated information on mechansisms of stress tolerance at cell, tissue and whole-plant level, this book provides a useful reference text for post graduate students and researchers involved in the fields of stress physiology and plant physiology in general, with additional readership amongst researchers in horticulture, agronomy, crop science, conservation, environmental management and ecological restoration.

Due to their unique properties, chitosan-based materials have emerged as useful resources in a variety of medicines, drug controlled-release carriers, tissue engineering scaffolds, and immobilized enzymes. But many of these materials have yet to reach the commercial market. Therefore, more work must be completed to fill the gap between research and