Ever since the beginning of the plastics and rubber industry, it was
realized that useful products could be produced only if cer- tain
additives were incorporated into polymers. With the help of these
additives, when physically dispersed in a polymer matrix, it has been
possible to improve stability against thermal, oxidative, UV, hydrolytic
and biological degradation, mechanical properties, flammability, cost,
and processibility of plastics. The enormous growth of the volume of
plastics consumed by modern society, and new application areas for
plastics, have created a demand for new, better additives and better
understanding of their functions in polymer systems. As a result of
these trends there is a need for sharing of information on progress
achieved in the area of polymer additives among engineers and scientists
of the plastics industry and academia. This book is based on expanded
and updated papers originally presented at the International Symposium
on Polymer Additives, which was held in Las Vegas, Nevada, and was
sponsored by the American Chemical Society, Division of Polymeric
Materials Science and Engi- neering. The book is divided into five parts
which cover advances in various areas of polymer additives. The first
part is devoted to the progress in understanding of UV degradation and
stabilization of various polymers. Oxidation degradation and
stabilization of plastic materials is covered in the second part. New
developments in the stabilization of PVC are presented in the third
part.