Hydrolysis of 4-Acetoxystyrene Polymers Prepared by Atom Transfer Radical Polymerization
作者： Xianyi Chen , Katja Jankova , J�rgen Kops , Walther Batsberg
DOI: 10.1002/(SICI)1099-0518(19990301)37:5<627::AID-POLA13>3.0.CO;2-Q
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摘要: Hydrolysis of 4-acetoxystyrene polymers prepared by atom transfer radical polymerization was carried out under various reaction conditions. It found that hydrazinolysis homopolymers, random and block copolymers with styrene in 1,4-dioxane, afforded the corresponding narrow dispersed materials phenolic groups which were substantially free from crosslinkages. Gel permeation chromatographic (GPC) analysis these revealed different extents molecular weight distribution (MWD) broadening for hydrolysis products structures. On other hand, NaOH catalyzed deprotection, including triblock copolymer poly(4-acetoxystyrene-b-isobutylene-b-4-ace-toxystyrene) suffered some degrees coupling or even gelation, except poly-(styrene-b-4-acetoxystyrene-b-styrene) also this method could be conveniently converted to its product.
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