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4708211 
Journal Article 
RAFT Polymerization of Acrylamide Polyhedral Oligometic Silsesquioxane in Supercritical CO2 
Cheng Long; Bian Zhongxuan; Ding Minyuan; Zhao Meng; Li Hui 
2015 
1 
Gaodeng Xuexiao Huaxue Xuebao / Chemical Journal of Chinese Universities
ISSN: 0251-0790 
36 
10 
2067-2072 
WOS:000363708700031 
Polyacrylamide (PAM) isobutyl-polyhedral oligometic silsesquioxane (POSS) (PAMPOSS) homopolymer and PAMPOSS-b-PMMA (polymethyl methacrylate) block copolymers were prepared via reversible addition-fragmentation transfer(RAFT) polymerization using benzenecarbodithioic acid 1,1-dimethylethyl ester as the RAFT agent in supercritical CO2. The products were characterized. The results show that polymerization reaction in supercritical CO2 is well controlleded. Both of PAMPOSS and PAMPOSS-b-PMMA. have high degree of polymerization (DP) and low polydispersity index (PDI). It can be also found that the polymerization of AM-POSS is a homogeneous reaction, and the solubility of POSS containing polymers in supercritical CO, is effected by the crystallinity of POSS. 
Supercritical CO2; Polyhedral oligometic silsesquioxane (POSS); Benzenecarbodithioic acid 1,1-dimethylethyl ester(TTBT); Reversible addition fragmentation transfer(RAFT) polymerization