Synthesis of polystyrene- block -polycarbonate- block - polystyrene and polycarbonate- graft -polystyrene using tandem condensation polymerization and atom transfer radical polymerization |
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| Authors: | Dawa Shen Yan Shi Zhifeng Fu Wantai Yang Xiaoping Cai Runxong Lin and Desheng Zhang |
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| Affiliation: | (1) Key Laboratory for Controlled Chemical Reactions of Education Ministry, Beijing University of Chemical Technology, Beijing 100029, China, CN;(2) Research Institute, Jilin Chemical Industry Corporation, Jilin 132021, China, e-mail fuzf@mail.buct.edu.cn, Tel +86-10-64416783, CN |
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| Abstract: | Summary
Polystyrene-block-polycarbonate-block-polystyrene was synthesized by atom transfer radical polymerization of styrene using polycarbonate having two 2-bromoisobutyryloxy
end groups as the macroinitiator, which was prepared by condensation polymerization of bisphenol A with triphosgene in the
presence of chain-stopper, 2-(4-hydroxyphenyl)-2-(4-(2-bromoisobutyryloxy)phenyl)propane. While polycarbonate-graft-polystyrene was synthesized by atom transfer radical polymerization of styrene using polycarbonate having 2-bromoisobutyryloxy
side groups as the macroinitiator, which was prepared by condensation of bisphenol and l,l-bis(4-hydroxyphenyl)- 1 -(4-(2-bromoisobutyryloxy)phenyl)ethane
with triphosgene. The molecular weights of polystyrene block or graft chains increased linearly with monomer conversion, and
their polydispersities were low throughout the blocking or grafting polymerization process.
Received: 25 June 2002/Revised version: 23 October 2002/ Accepted: 25 November 2002
Correspondence to Zhifeng Fu |
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