Effect of crystal-disrupting chlorohydroquinone on the first-order transitions of poly(aryl ether ketone)s containing biphenyl units
✍ Scribed by Shanju Zhang; Yubin Zheng; Zhongwen Wu; Mingwen Tian; Decai Yang; Ryutoku Yosomiya
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 223 KB
- Volume
- 18
- Category
- Article
- ISSN
- 1022-1336
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✦ Synopsis
Abstract
The novel poly(aryl ether ketone)s were synthesized by nucleophilic substitution reactions of 4,4′‐difluorobenzophenone with 4,4′‐biphenyldiol and chlorohydroquinone. As expected, the copolymers have lower melting transitions than the biphenyldiol‐based homopoly(aryl ether ketone) because of the copolymerization effect of the crystal‐disrupting monomer chlorohydroquinone. Copolymers containing 50 and 70% biphenyldiol show two first‐order transitions which are associated with the crystal‐to‐liquid crystal transition and the liquid crystal‐to‐isotropic transition.