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Mechanical properties of thermoplastic elastomers of poly(butylene terephthalate) and poly(ethylene glycol) in a bending deformation
Author(s) -
Wang Shuhong,
Mark J. E.,
Erman B.,
Fakirov S.
Publication year - 1994
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.1994.070510115
Subject(s) - materials science , thermoplastic elastomer , elastomer , composite material , ethylene glycol , creep , thermoplastic , copolymer , bending , polymer , deformation (meteorology) , izod impact strength test , relaxation (psychology) , peg ratio , polymer chemistry , ultimate tensile strength , chemical engineering , psychology , social psychology , engineering , finance , economics
Thermoplastic elastomers based on poly(butylene terephthalate) (PBT) and poly(ethylene glycol) (PEG) were studied by bending‐creep measurements. The dependence of the creep compliance on the composition of the block copolymer was determined, and the experimental results were compared with calculated results to obtain a better understanding of structure‐property relationships for this class of materials. The hard PBT domains in the rubbery PEG matrix make a large contribution to the mechanical strength and hardness, presumably serving as reinforcing fillers as well as cross‐links. Relaxation effects were found to decrease significantly with increase in hard‐segment content. © 1994 John Wiley & Sons, Inc.