Polymer Permeability
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Polymer Permeability
Author: J. Comyn
language: en
Publisher: Springer Science & Business Media
Release Date: 2012-12-06
Polymers are permeable, whilst ceramics, glasses and metals are gener ally impermeable. This may seem a disadvantage in that polymeric containers may allow loss or contamination of their contents and aggressive substances such as water will diffuse into polymeric struc tures such as adhesive joints or fibre-reinforced composites and cause weakening. However, in some cases permeability is an advantage, and one particular area where this is so is in the use of polymers in drug delivery systems. Also, without permeable polymers, we would not enjoy the wide range of dyed fabrics used in clothing and furnishing. The fundamental reason for the permeability of polymers is their relatively high level of molecular motion, a factor which also leads to their high levels of creep in comparison with ceramics, glasses and metals. The aim of this volume is to examine some timely applied aspects of polymer permeability. In the first chapter basic issues in the mathema tics of diffusion are introduced, and this is followed by two chapters where the fundamental aspects of diffusion in polymers are presented. The following chapters, then, each examine some area of applied science where permeability is a key issue. Each chapter is reasonably self-contained and intended to be informative without frequent outside reference. This inevitably leads to some repetition, but it is hoped that this is not excessive.
Physical Properties of Polymers Handbook
Author: James E. Mark
language: en
Publisher: Springer Science & Business Media
Release Date: 2007-03-21
This book offers concise information on the properties of polymeric materials, particularly those most relevant to physical chemistry and chemical physics. Extensive updates and revisions to each chapter include eleven new chapters on novel polymeric structures, reinforcing phases in polymers, and experiments on single polymer chains. The study of complex materials is highly interdisciplinary, and new findings are scattered among a large selection of scientific and engineering journals. This book brings together data from experts in the different disciplines contributing to the rapidly growing area of polymers and complex materials.
Film Properties of Plastics and Elastomers
Now in its 3e, Film Properties of Plastics and Elastomers, has been extensively revised. This is the only data handbook available on the engineering properties of commercial polymeric films. It details many physical, mechanical, optical, electrical, and permeation properties within the context of specific test parameters, providing a ready reference for comparing materials in the same family as well as materials in different families. Data is presented on the characteristics of 47 major plastic and elastomer packaging materials. New to this edition, the resin chapters each contain textual summary information including category, general description, processing methods, applications, and other facts as appropriate, such as reliability, weatherability, and regulatory approval considerations for use in food and medical packaging. Extensive references are provided. - Essential data and practical guidance for engineers and scientists working with polymer films - 3e expanded by nearly 50% to include new data sections and additional explanatory chapters to help readers utilize the data and work successfully with plastic films - Written for engineers working across the key market sectors for polymer film applications: semiconductor, chemicals, food, beverage and pharmaceutical packaging, energy, medical devices, etc.