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Wool butadiene copolymers. I. Preparation and morphology
Author(s) -
Russell Ian M.,
Evans David J.
Publication year - 1990
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1990.070401112
Subject(s) - wool , grafting , copolymer , polymer chemistry , polymer , materials science , polymerization , yield (engineering) , morphology (biology) , chemical engineering , silk , polymer science , composite material , genetics , engineering , biology
Wool may be readily grafted with poly(butadiene) by gamma‐ray mutual irradiation or solutionfree radical techniques. Some factors important in the preparation are discussed. Through microscopic and chemical analyses, the radiation‐grafted polymer has been shown to be largely associated with, and bound to, the high‐sulfur matrix regions of the wool fiber, although there is some specific deposition in the outer exocuticle and in the normally inert regions of the cell membrane complex. The radiation grafted poly(butadiene) isolated by removal of the wool protein by acid hydrolysis has a crosslinked structure typical of other polybutadienes prepared by radiation‐induced polymerization. As the grafting yield increased, the molecular weight between points of grafting to the wool increased.