Affiliation:
1. 1Corporate Research-Science Laboratories, Exxon Research and Engineering Company, P. O. Box 45, Linden, New Jersey 07036
2. 2Ames Research Center, National Aeronautics and Space Administration, Moffett Field, California 94035
Abstract
Abstract
This article surveys recent advances in the chemical modification of unsaturated polymers, with emphasis on the literature since 1974. Among the topics covered are hydrogenation, halogenation, cyclization, isomerization, epoxidation, cycloaddition, sulfonation, carbenation, and silylation. The olefin functionality is a useful target for modification because of its varied reactivity, and recent work in unsaturated polymer reaction chemistry has yielded significant discoveries and valuable new information. For example, modern synthetic reagents and catalysts (e.g., as phase-transfer catalysts) have been advantageously employed to improve process and/or product quality. Synthetic techniques have been refined to allow the selective modification of specific polymer microstructures or blocks. Moreover, new structural and mechanistic insights have been derived from the judicious use of model compounds and/or specialized characterization methods. The relationship between chemically modified polymer structure and properties is being more clearly defined, and sequence effects are beginning to be appreciated. Finally, important new applications (e.g., elastomers, plastics, motor oil additives) have been discovered for chemically modified diene polymers.
Subject
Materials Chemistry,Polymers and Plastics
Cited by
104 articles.
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