Chemical Research in Chinese Universities ›› 2019, Vol. 35 ›› Issue (4): 735-741.doi: 10.1007/s40242-019-8330-3

• Articles • Previous Articles    

Carboxyl-functionalized Nanocellulose Reinforced Nanocomposite Proton Exchange Membrane

YANG Xue1, WEI Yingcong2, CHU Xuefeng3, ZHAO Qi1, YAN Wenling1, DONG Chenjun1, LIU Baijun4, SUN Zhaoyan5, HU Wei1, ZHANG Niaona1   

  1. 1. College of Chemical Engineering, Changchun University of Technology, Changchun 130012, P. R. China;
    2. State Key Laboratory of Photocatalysis on Energy and Environment, College of Chemistry, Fuzhou University, Fuzhou 350002, P. R. China;
    3. School of Electrical and Electronic Information Engineering, Jilin Jianzhu University, Changchun 130118, P. R. China;
    4. College of Chemistry, Jilin University, Changchun 130012, P. R. China;
    5. State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, P. R. China
  • Received:2018-10-15 Revised:2019-01-17 Online:2019-08-01 Published:2019-08-01
  • Contact: HU Wei, ZHANG Niaona E-mail:huwei@ccut.edu.cn;zhangniaona@ccut.edu.cn
  • Supported by:
    Supported by the National Natural Science Foundation of China(No.21404013), the Science and Technology Development Plan of Jilin Province, China(Nos.20160101323JC, 20170101110JC, 20180201075GX), the Project of the Jilin Provincial Deve-lopment and Reform Commission, China(No.2018C041-1), the Open Research Fund of State Key Laboratory of Polymer Physics and Chemistry of Chinese Academy of Sciences, and the Open Project of National & Local United Engineering Lab for Power Battery(Northeast Normal University), China(No.130028822).

Abstract: Nanocellulose(NCC) was prepared through the acid hydrolysis of microcellulose(MCC) and was reacted with maleic anhydride to obtain carboxyl-functionized nanocellulose(MA-NCCs). The presence of-OH and-SO3H on the surface of rod-like MA-NCC was confirmed by Fourier transform infrared spectrometry(FTIR). Sulfonated poly(aryl ether ether ketone ketone)(Ph-SPEEKK) was synthesized with bis(4-fluorophenyl-methanone) and 2-phenylhydroquinone as monomer. MA-NCC/Ph-SPEEKK nanocomposite membranes with different MA-NCCs content were prepared, and their properties were characterized. Compared with Ph-SPEEKK, MA-NCC/Ph-SPEEKK nanocomposite membrane showed better mechanical and thermal properties and higher proton conductivity. The proton conductivity of the composite membrane with 4%(mass fraction) MA-NCCs under 80℃ was 0.095 S/cm. And its tensile strength reached 30.3 MPa, which was 21.2% higher than that of Ph-SPEEKK pure polymer membrane.

Key words: Sulfonated poly(arylether ether ketone ketone), Carboxylation, Nanocellulose, Proton exchange membrane