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Chem. J. Chinese Universities ›› 2010, Vol. 31 ›› Issue (2): 402.

• Articles • Previous Articles     Next Articles

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.

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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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