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Relationship between molecular structure and thermal properties of poly(aryl ether ketone)s
Author(s) -
Shibata Mitsuhiro,
Yosomiya Ryutoku,
Wang Junzuo,
Zheng Yubin,
Zhang Wanjin,
Wu Zhongwen
Publication year - 1997
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.1997.030180205
Subject(s) - ether , ketone , differential scanning calorimetry , aryl , polymer chemistry , glass transition , nucleophilic substitution , crystal structure , chemistry , materials science , crystallography , organic chemistry , polymer , alkyl , thermodynamics , physics
Five kinds of poly(aryl ether ketone)s (PAEKs) having para‐substituted linear molecular chains were synthesized via nucleophilic substitution reaction of the corresponding difluoro‐ and dihydroxy‐compounds. The glass transition temperature and melting temperature of the PAEKs measured through differential scanning calorimetry in addition to those of other PAEKs reported are approximately proportional to the logarithm of the ratio of the mole fractions of ketone and ether groups in the repeating unit of the PEAKs. On the other hand, this ratio does not affect the crystal structure of the PAEKs.