CIESC Journal ›› 2016, Vol. 67 ›› Issue (S1): 384-389.doi: 10.11949/j.issn.0438-1157.20160654

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Preparation of proton exchange membrane by radiation-induced grafting of PVDF film

GAO Jinjin1,2, LI Xue2, ZHAO Yubin1, LI Weiwei2, ZHAO Yang2, WANG Shubo2, XIE Xiaofeng2, ZHANG Zhenlin1   

  1. 1 State Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, Hebei, China;
    2 Institute of Nuclear and New Energy Technology, Tsinghua University, Beijing 100084, China
  • Received:2016-05-11 Revised:2016-05-25 Online:2016-08-31 Published:2016-08-31
  • Supported by:

    supported by the National High Technology Research and Development Program of China (2012AA051201).


Sulfonated proton exchange membrane is a kind of ion exchange membrane with high thermal stability, chemical stability and good mechanical properties, having extremely broad application prospects. Numerous free radicals can be generated when the poly(vinylidene fluoride)(PVDF) membrane was irradiated by 60Co γ-source, acting as active sites for the graft of 4-sulfonyl chloride vinylbenzene monomer, thus the proton exchange membrane can be prepared by subsequent alkaline and acid treatment. And the structures of the monomer, the original PVDF and grafted PVDF membrane were confirmed by FT-IR spectra, indicating that the monomer had been successfully grafted into PVDF membrane. This proton exchange membrane shows good thermal stability, also can meet the requirement of the temperature of proton exchange membrane fuel cells. The relationship of the proton conductivity, water uptake, ionic exchange capacity with degree of graft at different does rate but same total does were studied. The results showed that when the does rate was 40 Gy·min-1, the degree of graft of the membrane was 52.7%, ionic exchange capacity was 1.274 mmol·g-1, water uptake was 36.85% and conductivity was 136 mS·cm-1 at 80℃.

Key words: radiation, poly (vinylidene fluoride), irradiation grafting, proton exchange membrane

CLC Number: 

  • TM911.4
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