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Mechanical relaxation processes in polyether block amide copolymers (PEBA)
Author(s) -
Alberola Nicole,
Vassel Alain,
Christophe Helluin J.
Publication year - 1989
Publication title -
makromolekulare chemie. macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 0258-0322
DOI - 10.1002/masy.19890230119
Subject(s) - copolymer , polyamide , glass transition , materials science , amide , block (permutation group theory) , polymer chemistry , relaxation (psychology) , dynamic mechanical analysis , composite material , polymer , chemistry , organic chemistry , mathematics , geometry , psychology , social psychology
Dynamic mechanical experiments were carried out on a series of polyether block amide copolymers based on poly(tetramethylene oxide) and polyamide 12 with varying PE/PA weight ratio. Internal friction spectra exhibited three main peaks related to the subglass transition of the soft segments, the glass transition of the soft segments and the glass transition of the hard segments, respectively. Moreover, the effect of thermal history on dynamic mechanical behaviour of a particular PEBA sample (70% PA wt) is investigated.