Hydrophilic Modification of Poly(vinylidene fluoride) via Atom transfer Radical Polymerization of 3-(Trimethoxysilyl)propyl Methacrylate

摘要

PVDF was modified by atom transfer radical polymerization (ATRP) directly from the secondary fluoride group of PVDF backbone. 3-(trimethoxysilyl) propyl methacrylate (TMSPMA) was initiated to polymerization by copper (I) chloride (CuCl) and 4,4'-dimethyl-2,2'-dipyridyl (DMDP) in a N-methyl pyrrolidinone (NMP) solution under an argon atmosphere. Spectra of NMR and FTIR-ATR on the grafted polymers showed that poly-(PTMSPMA) (PTMSPMA) side chains were successfully grafted to the PVDF backbone. Hydrolysis of the films prepared from the modified PVDF resulted in a reduction of contact angle, indicating their increased hydrophilicity. This modified PVDF with amphiphilicity and functional silyl groups would be a promising material for novel membrane separation applications.