EFFECT OF CRYSTAL-DISRUPTING CHLOROHYDROQUINONE ON THE FIRST-ORDER TRANSITIONS OF POLY(ARYL ETHER KETONE)S CONTAINING BIPHENYL UNITS

Authors
ZHANG SJ ZHENG YB WU ZW TIAN MW YANG DC YOSOMIYA R
Citation
Sj. Zhang et al., EFFECT OF CRYSTAL-DISRUPTING CHLOROHYDROQUINONE ON THE FIRST-ORDER TRANSITIONS OF POLY(ARYL ETHER KETONE)S CONTAINING BIPHENYL UNITS, Macromolecular rapid communications, 18(8), 1997, pp. 729-732
Citations number
12
Categorie Soggetti
Polymer Sciences
Journal title
Macromolecular rapid communications → ACNP
ISSN journal
10221336
Volume
18
Issue
8
Year of publication
1997
Pages
729 - 732
Database
ISI
SICI code
1022-1336(1997)18:8<729:EOCCOT>2.0.ZU;2-O
Abstract
The novel poly(aryl ether ketone)s were synthesized by nucleophilic su bstitution reactions of 4,4'-difluorobenzophenone with 4,4'-biphenyldi ol and chlorohydroquinone. As expected, the copolymers have lower melt ing transitions than the biphenyldiol-based homopoly(aryl ether ketone ) because of the copolymerization effect of the crystal-disrupting mon omer chlorohydroquinone. Copolymers containing 50 and 70% biphenyldiol show two first-order transitions which are associated with the crysta l-to-liquid crystal transition and the liquid crystal-to-isotropic tra nsition.