Synthesis and curing behavior of alkyl-substituted poly(aryl ether ketone)s having a crosslinkable styryl group at chain ends
✍ Scribed by Yoshihiro Taguchi; Hiroshi Uyama; Shiro Kobayashi
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 595 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0887-624X
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✦ Synopsis
Crosslinkable alkyl-substituted poly(aryl ether ketone)s (PEKs) bearing a styryl group at both chain ends were synthesized by nucleophilic substitution reaction of 1,l'-(p-phenylenedioxy)bis[2-methy l-4-( 4-fluorobenzoyl) benzene] with an excess aromatic diol in the presence of a base, followed by the reaction of the terminal phenol group with chloromethylstyrene. The aromatic diols used in this study were hydroquinone and resorcinol. The molecular weight of the polymer determined by GPC and 'H NMR agreed with each other and close to the theoretical value calculated from the feed ratio. Tbe polymer was soluble in IV,N-dimethylacetamide and tetrahydrofuran, but insoluble in acetone and methanol. From DSC analysis, the polymer was thermally crosslinked around 2200C. The addition of dicumyl peroxide as a radical generator in the polymer decreased the curing temperature. The cured polymer showed high thermal stability up to 420°C under nitrogen. c 1997John Wiley & Sons, Inc. Keywords:
poly(aryl ether ketone) q curing q styryl group q high volubility toward organic solvents * To whom al} correspondenceshould be addressed.