Chemical Research in Chinese Universities ›› 2019, Vol. 35 ›› Issue (5): 916-923.doi: 10.1007/s40242-019-9065-x

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Proton Conductivity Improvement Effect of Cellulose on SPEEKK Based PEM

ZHAO Qi1, LIANG Xiaoxiao1, YOU Yingxue1, WANG Yuliang1, DU Xinwei1, LIU Baijun2, HU Wei1   

  1. 1. College of Chemical Engineering, Changchun University of Technology, Changchun 130012, P. R. China;
    2. College of Chemistry, Jilin University, Changchun 130012, P. R. China
  • Received:2019-03-06 Online:2019-10-01 Published:2019-09-24
  • Contact: HU Wei E-mail:huwei@ccut.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(Nos.21404013, 5187306), the Science and Technology De-velopment Plan of Jilin Province, China(Nos.20160101323JC, 20170101110JC, 20180201075GX), the Foundation of the Deve-lopment and Reform Commission of Jilin Province, China(No.2018C041-1), the Open Research Fund of the State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, China(Nos.201815, 201826) and the Open Project of National & Local United Engineering Lab for Power Battery, Northeast Normal University, China(No.130028822).

Abstract: The proton exchange membranes(PEMs) were prepared through the solution mixing method of sulfonated poly(ether ether ketone ketone)(sPEEKK) and cellulose. Cellulose was dissolved by 1-allyl-3-methylimidazolium chloride(AMIMCl) and then mixed with sPEEKK solution. sPEEKK/cellulose(SC) composite membranes were prepared by solution casting. The membranes have high flexibility and transparency, which meant the compounding in molecular level. Meanwhile, the composite membranes showed excellent mechanical properties and high proton conductivity. The mechanical property reached 29 MPa, and the proton conductivity was as high as 0.32 S/cm. Thus, as a kind of biomaterials, cellulose could be an excellent reinforcing material for poly(aryl ether ketone)(PAEK) based PEMs.

Key words: Cellulose, Poly(aryl ether ketone ketone), Ionic liquid, Mechanical property, Proton conductivity