ATRP法合成接枝共聚物PVDF-g-PNIPAAm及其分离膜的研究  

Synthesis and Characterization of Graft Copolymer PVDF-g-PNIPAAm via ATRP and Its Separating Membranes

作　　者：林先凯[1] 冯霞[1] 陈莉[1] 

机构地区：[1]天津市改性与功能纤维重点实验室,天津工业大学材料科学与工程学院,天津300160

出　　处：《高等学校化学学报》2010年第2期402-405,共4页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:20774064);国家“八六三”计划项目(批准号:2007AA03Z533);教育部科学技术研究重点项目(批准号:209005);天津市高等学校发展基金(批准号:20071214)资助

摘　　要：以氯化亚铜(CuCl)/三(N,N-二甲基氨基乙基)胺(Me6TREN)为催化配位体系,用DMF作为溶剂,通过原子转移自由基聚合(ATRP)方法直接在商用聚偏氟乙烯(PVDF)粉末上接枝温敏性材料N-异丙基丙烯酰胺(NIPAAm).红外光谱(FTIR)和核磁共振(1HNMR)分析表明,PNIPAAm成功接枝到了PVDF上.考察了聚合反应时间及反应温度对接枝率的影响.接枝共聚物以相转化法进行制膜,通过纯水通量测试温敏性能,结果表明,PVDF能成功用于ATRP反应,当温度变化时所制备的PVDF-g-PNIPAAm共聚膜呈现出一定的温度敏感性能.The direct graft temperature-sensitive material N-isopropylacrylamide（NIPAAm） on commercial poly（vinylidene fluoride）（PVDF） via atom transfer radical polymerization（ATRP） is demonstrated.The application of ATRP used Copper（Ⅰ） chloride（CuCl）/Tris（2-dimethylaminoethyl）amine（Me6TREN） as the catalyst systems and N,N-dimethylformamide（DMF） as solvent.The graft copolymers of PVDF-g-PNIPAAm were characterized by Fourier transform infrared（FTIR） and 1H NMR spectra.The effects of polymerization temperature and reaction time on grafting ratio were studied.The PVDF-g-PNIPAAm membranes were prepared from the graft copolymers by the phase inversion method.The effect of temperature on the flux of pure water for the PVDF-g-PNIPAAm membrane was investigated.The results show that alkyl fluorides are successfully applied in the ATRP and the PVDF-g-PNIPAAm membranes can exhibit temperature-sensitive performance as the temperature change.

关 键 词：聚偏氟乙烯 原子转移自由基聚合 温敏性 

分 类 号：O631[理学—高分子化学] TQ316.3[理学—化学]