【摘 要】
：
The living cationic polymerization of 4-[2-(tert-butyldimethylsiloxy)ethyl]styrene (TBDMES) was studied in methylcyclohexane (MeChx)/methylchloride (MeCI) (50/5
【机 构】
：
Department of Material Science and Engineering,College of Material Science and Engineering
论文部分内容阅读
The living cationic polymerization of 4-[2-(tert-butyldimethylsiloxy)ethyl]styrene (TBDMES) was studied in methylcyclohexane (MeChx)/methylchloride (MeCI) (50/50 V/V) solvent mixture at -80℃. The initiator 1,1-diphenylethylene (DPE) capped 2-chloro-2,4,4-trimethylpentane (TMPCI) was formed in situ in conjunction with titanium tetrachloride (TiCl4). The Lewis acidity of TiCl4 was decreased by the addition of titanium(IV) isopropoxide (Ti(OiPr)4) to accomplish living polymerization of TBDMES. Hydrolysis of poly(TBDMES) in the presence of tetra-butylammonium fluoride yielded poly[4-(2-hydroxyethyl)styrene] (poly(HOES)). FT-IR, NMR and DSC demonstrated the hydrolysis was complete.
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