Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 84, Issue 5, Pages 969-974Publisher
WILEY-BLACKWELL
DOI: 10.1002/app.10202
Keywords
grafting; tenacity; stress relaxation; moisture regain; elastic and work recovery
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The mechanical properties such as the tenacity, breaking extension, initial modulus, elastic and work recovery, and stress relaxation behavior of methyl methacrylate (MMA) grafted silk fibers prepared under different conditions were measured and explained in terms of the relative dominance of the stress concentration, reduction in the interchain cohesion, and fiber matrix stiffening at different grafting percentages. The moisture regain characteristics of fibers grafted in the presence of different Solvents were also studied and compared. The grafting of MMA on silk was found to improve the recovery properties significantly without affecting the stress relaxation behavior. The moisture regain studies indicate that moisture regain is reduced with increasing length of the grafted poly(MMA) chains. (C) 2002 Wiley Periodicals, Inc.
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