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Author: Thomas Roy Crompton Publisher: iSmithers Rapra Publishing ISBN: 9781847350008 Category : Science Languages : en Pages : 458
Book Description
This book is designed as a practical text for use in the laboratories of the plastic producer and user industries and by others such as universities and institutions who are concerned with problems associated with additives and adventitious impurities in polymers. For example, powerful new analytical tools have been made available to the chemist by a combination of various chromatographic techniques with methods of identifying separated additives and their degradation products by techniques based on infrared and mass spectrometry. In particular supercritical fluid chromatography combined with m.
Author: Thomas Roy Crompton Publisher: iSmithers Rapra Publishing ISBN: 9781847350008 Category : Science Languages : en Pages : 458
Book Description
This book is designed as a practical text for use in the laboratories of the plastic producer and user industries and by others such as universities and institutions who are concerned with problems associated with additives and adventitious impurities in polymers. For example, powerful new analytical tools have been made available to the chemist by a combination of various chromatographic techniques with methods of identifying separated additives and their degradation products by techniques based on infrared and mass spectrometry. In particular supercritical fluid chromatography combined with m.
Author: Jan C. J. Bart Publisher: John Wiley & Sons ISBN: 0470012056 Category : Technology & Engineering Languages : en Pages : 836
Book Description
This industrially relevant resource covers all established and emerging analytical methods for the deformulation of polymeric materials, with emphasis on the non-polymeric components. Each technique is evaluated on its technical and industrial merits. Emphasis is on understanding (principles and characteristics) and industrial applicability. Extensively illustrated throughout with over 200 figures, 400 tables, and 3,000 references.
Author: Michael Bolgar Publisher: CRC Press ISBN: 1439860750 Category : Science Languages : en Pages : 626
Book Description
Polymers have undoubtedly changed the world through many products that improve our lives. However, additives used to modify the overall characteristics of these materials may not be fully disclosed or understood. These additives may present possible environmental and health hazards. It is important to monitor consumer products for these compounds u
Author: Victor M. Litvinov Publisher: iSmithers Rapra Publishing ISBN: 9781859572801 Category : Science Languages : en Pages : 666
Book Description
This book deals with the application of spectroscopic techniques for characterisation of chemical and physical structures in viscoelastic materials, such as unvulcanised elastomers and their vulcanisates, various rubbery materials and some plastics, which when blended with particular additives (plasticisers) behave like rubbers. Analysis of the rubbery materials is complicated by the fact that rubbery products, such as tyres, tubes, seals, V-belts and hoses, contain in the rubbery matrix a significant amount of various compounds, i.e., fillers, vulcanising agents, antioxidants and plasticisers. Due to the complex composition, no single technique can provide a good understanding of the effect of chemical and physical structures on the functional properties of rubbery materials. Thus spectroscopy has become a powerful tool for the determination of polymer structures. The most comprehensive information on chemical and physical structures in relation to material properties can be obtained by using a combination of macroscopic techniques and methods that provide information on the molecular level. frequently used for analysis of rubbery materials, i.e., various methods of nuclear magnetic resonance (NMR) and optical spectroscopy. The main objective of this present book is to discuss a wide range of applications of the spectroscopic techniques for the analysis of rubbery materials. The book brings together the various spectroscopic techniques for obtaining the following information: chemical structure of rubbery materials, network structure analysis, heterogeneity of rubbery materials, physical properties of rubbery materials, functional properties and stability of rubbery materials, processing of rubbery materials and quality control. The contents of this book are of interest to chemists, physicists, material scientists and technologists who seek a better understanding of rubbery materials.
Author: T. R. Crompton Publisher: Elsevier ISBN: 1483157717 Category : Medical Languages : en Pages : 247
Book Description
Additive Migration from Plastics Into Food examines the intrusion of foreign chemicals into food via additives present in plastics packaging and the toxic hazards they pose to consumers. This book shows how direct contact between the packed commodity and the plastic is likely to result in the transfer of polymer additives, adventitious impurities such as monomers, catalyst remnants, and residual polymerization solvents, and low-molecular-weight polymer fractions from the plastic into the packaged material. This book is comprised of nine chapters and begins with a discussion on the various types of plastics used in food packaging as well as the types of substances present in the plastic that might migrate into the food. Subsequent chapters review world literature on extraction testing and the analysis of extractants. The determination of various types of polymer additives and residual monomers in extractants of liquid foodstuffs and beverages, solid foods, edible oils, and fatty foodstuffs is considered. The final chapter looks at the legal requirements concerning the use of additives in food-grade plastics in various countries. This monograph will be of interest to those in the plastics industry, food and beverage packaging industry, and large retail outlets such as supermarkets, along with medical and public health officials, legislators, environmentalists, and the general public.
Author: Thomas Roy Crompton Publisher: iSmithers Rapra Publishing ISBN: 9781847350558 Category : Electronic books Languages : en Pages : 330
Book Description
Plastics are now being used on a large scale for the packaging of fatty and aqueous foodstuffs and beverages, both alcoholic and non-alcoholic. Thus it is likely that some transfer of polymer additives will occur - adventitious impurities such as monomers, oligomers, catalyst remnants and residual polymerisation solvents and low molecular weight polymer fractions - from the plastic into the packaged material with the consequent risk of a toxic hazard to the consumer. This book covers all aspects of the migration of additives into food and gives detailed information on the analytical determination of the additives in various plastics. This book will be of interest to those engaged in the implementation of packaging legislation, including management, analytical chemists and the manufacturers of foods, beverages, pharmaceuticals and cosmetics and also scientific and toxicologists in the packaging industry.
Author: Victor O. Sheftel Publisher: CRC Press ISBN: 9781566704991 Category : Technology & Engineering Languages : en Pages : 1324
Book Description
Now, more than ever, foods come packaged in containers designed for direct cooking or heating, which often causes the movement of substances - indirect additives - into foods. Because of their unique characteristics, plastics or polymeric materials (PM) have become the most important packaging material for food products. The safety assessment of plastics intended for use in contact with foodstuffs or drinking water continues to present a serious challenge. Indirect Food Additives and Polymers: Migration and Toxicology studies the potential hazards of indirect additives for human health and develops recommendations for their safe manufacture and use. It contains an impressive review of basic regulatory, toxicological, and other scientific information necessary to identify, characterize, measure, and predict the hazards of nearly 2,000 plastic-like materials employed in packaging. The author presents the data underlying federal regulations - previously unavailable a single volume. The entry for each chemical provides: Prime Name Molecular or Structural Formula Molecular Mass Synonyms CAS Number RTECS number Properties Application and Exposure Migration Data Acute Toxicity Repeated Exposure Short-Term Toxicity Long-Term Toxicity Immunotoxicity of Allergenic Effect Reproductive Toxicity Mutagenicity Carcinogenicity Chemobiokinetics Standards Guidelines Regulations Recommendations References International in scope, the Handbook of Indirect Polymeric Additives in Food and Water: Migration and Toxicology offers comprehensive data on the toxic effects of polymeric materials and their ingredients. You will find the most information on plastics and polymeric materials- their migration and toxicology - in this resource.
Author: B.J. Hunt Publisher: Springer Science & Business Media ISBN: 9401121605 Category : Science Languages : en Pages : 376
Book Description
Polymers continue to play an ever increasing role in the modern world. In fact it is quite inconceivable to most people that we could ever have existed of the increased volume and variety of materials without them. As a result currently available, and the diversity of their application, characterisation has become an essential requirement of industrial and academic laboratories in volved with polymeric materials. On the one hand requirements may come from polymer specialists involved in the design and synthesis of new materials who require a detailed understanding of the relationship between the precise molecular architecture and the properties of the polymer in order to improve its capabilities and range of applications. On the other hand, many analysts who are not polymer specialists are faced with the problems of analysing and testing a wide range of polymeric materials for quality control or material specification purposes. We hope this book will be a useful reference for all scientists and techno or industrial laboratories, logists involved with polymers, whether in academic and irrespective of their scientific discipline. We have attempted to include in one volume all of the most important techniques. Obviously it is not possible to do this in any great depth but we have encouraged the use of specific examples to illustrate the range of possibilities. In addition numerous references are given to more detailed texts on specific subjects, to direct the reader where appropriate. The book is divided into II chapters.
Author: Thomas Roy Crompton
Author: Thomas Roy Crompton
Author: Jan C. J. Bart
Author: Jan C. J. Bart
Author: Michael Bolgar
Author: R. Yoda
Author: Victor M. Litvinov
Author: T. R. Crompton
Author: Thomas Roy Crompton
Author: Victor O. Sheftel
Author: B.J. Hunt