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Sulfonation of polyetheretherketone by chlorosulfuric acid

✍ Scribed by Francesco Trotta; Enrico Drioli; G. Moraglio; E. Baima Poma

Publisher: John Wiley and Sons
Year: 1998
Tongue: English
Weight: 123 KB
Volume: 70
Category: Article
ISSN: 0021-8995
DOI: 10.1002/(sici)1097-4628(19981017)70:3<477::aid-app8>3.0.co;2-k

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✦ Synopsis

Sulfonated poly(oxa-p-phenylene-3,3-phthalido-p-phenylene-oxa-p-phenyleneoxy-phenylene) (PEEK-WC) with various degrees of substitution was obtained by reaction of polyetheretherketone with neat chlorosulfuric acid. Highly sulfonated PEEK-WC was freely soluble in cold water. By working under suitable reaction conditions, no degradation of the polymeric chain was detected. The modified PEEK-WC was able to form asymmetric membranes. The expected chlorosulfonated derivatives were never achieved.

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