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Anion exchange resins prepared from polystyrene crosslinked via a Friedel–Crafts reaction
Author(s) -
Belfer Sofia,
Glozman Raisa
Publication year - 1979
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1979.070241007
Subject(s) - polystyrene , copolymer , cationic polymerization , friedel–crafts reaction , polymer chemistry , styrene , solvent , ion exchange resin , ion exchange , chemistry , materials science , ion , chemical engineering , organic chemistry , catalysis , polymer , engineering
The preparation of anion exchange resins from polystyrene crosslinked via a Friedel–Crafts reaction is investigated. Chloromethylation of a highly swollen styrene–hexahydrotriacrylolyl‐ s ‐triazine copolymer with a mixture of chlorosulfonic acid and methylal is accompanied by the crosslinking of the initially flexible copolymer. The crosslinking efficiency is dependent on the conditions (temperature, nature of solvent) of chloromethylation and can be explained by cationic postpolymerization of polystyrene or poly(benzylchloride), which takes place concurrently with the chloromethylation.