Amphiphilic PPESK-g-PEG graft copolymers synthesized via Williamson method

作者：Zhu Liping^*; Zhu Baoku; Feng Yongxiang; Xu Youyi

来源：Acta Polymerica Sinica, 2007, (3): 301-304.

• amphiphilic
• poly(phthalazinone ether sulfone ketone) (PPESK)
• graft copolymer
• Williamson ether synthesis

Amphiphilic graft copolymers having poly( phthalazinone ether sul-fone ketone) (PPESK) backbones and poly ( ethylene glycol) side chains were synthesized through a modified Williamson ether method. Initially, chloromethylated PPESK (CMPPESK) was prepared using chloromethylether as chloromethylation agent. Then, PPESK-g-PEGs were synthesized via the coupling of CMPPESK with alkoxides formed from PEG mono methyl ether (PEG-OH) and sodium hydride.Two PEG-OHs with the average molecular weight of 350 g/mol and 750 g/mol, respectively were used as the grafting reactants.The grafting of PEG-OHs onto PPESK backbones was confirmed by FT-IR,H-1-NMR and solid C-13 CP-MAS NMR. The grafting degrees of PEG-OH were calculated from H-1-NMR analysis, and the obtained results were approximately consistent with those from TGA analysis. The resultant PPESK-g-PEG copolymers were hydrophilic, but water insoluble, rendering them potential candidates as surface modifying additive for PPESK porous membranes.

• 出版日期2007-3
• 单位浙江大学