高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (2): 402.

• 研究论文 • 上一篇    下一篇

ATRP法合成接枝共聚物PVDF-g-PNIPAAm及其分离膜的研究

林先凯, 冯霞, 陈莉   

  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
  • 收稿日期:2009-04-30 出版日期:2010-02-10 发布日期:2010-02-10
  • 通讯作者: 陈莉, 女, 博士, 教授, 博士生导师, 主要从事智能高分子研究. E-mail: chenlis@tjpu.edu.cn
  • 基金资助:

    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)和天津市高等学校发展基金(批准号: 20071214)资助.

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

LIN Xian-Kai, FENG Xia, CHEN Li*   

  1. Tianjin Key Laboratory of Fiber Modification and Functional Fiber, School of Materials Science and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300160, China
  • Received:2009-04-30 Online:2010-02-10 Published:2010-02-10
  • Contact: CHEN Li. E-mail: chenlis@tjpu.edu.cn
  • Supported by:

    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)和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(1H NMR)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.

关键词: 聚偏氟乙烯; 原子转移自由基聚合; 温敏性

Abstract:

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.

Key words: Poly(viaylidene fluoride); Atom transfer radical polymerization; Temperature-sensitivity

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