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Stress relaxation and the domain structure of thermoplastic elastomer
Author(s) -
Hsiue GingHo,
Chen DerJang,
Liew YeongKang
Publication year - 1988
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.1988.070350414
Subject(s) - polybutadiene , thermoplastic elastomer , materials science , relaxation (psychology) , stress relaxation , elastomer , amorphous solid , domain (mathematical analysis) , thermoplastic , copolymer , stress (linguistics) , composite material , polymer , creep , crystallography , chemistry , mathematics , psychology , social psychology , mathematical analysis , linguistics , philosophy
Abstract The relationship between the stress relaxation phenomena and domain structure of thermoplastic elastomer (TPE) was studied. Two representative thermoplastic elastomers: styrenebutadiene‐styrene block copolymer (SBS) and 1,2‐syndiotactic polybutadiene (1,2‐PB), representing the amorphous glassy domain and crystalline domain, respectively, were tested in different atmospheres and temperatures. Results show that the structure of the domain has a significant effect on the stress relaxation curve. It is found that the way the glassy domain is formed determines the failure of the domain and hence the stress relaxation rate. In the case of crystalline domain, the history of heat treatment determines the crystal structure and, in turn, the stress relaxation rate.