Chem. J. Chinese Universities ›› 2016, Vol. 37 ›› Issue (11): 2108.doi: 10.7503/cjcu20160282

• Polymer Chemistry • Previous Articles     Next Articles

Properties of CeO2/PTFE/Nafion Composite Membranes Prepared by Magnetron Sputtering

XIA Qingcheng, MAO Fei, YANG Yong, HAN Jing, LIU Xiaohui, YANG Jiazhi*(), SUN Dongping   

  1. School of Chemical Engineering, Nanjing University of Science and Technology, Nanjing 210094, China
  • Received:2016-04-25 Online:2016-11-10 Published:2016-10-20
  • Contact: YANG Jiazhi E-mail:jiazhiyang@sina.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(Nos.51303083, 21206076)

Abstract:

CeO2/PTFE composite membranes(PTFE=polytetrafluoroethylene) were prepared by magnetron sputtering CeO2 on the surface of PTFE microporous membranes. The membranes were characterized by XPS and SEM. The properties of the membranes, such as contact angle, tensile strength were investigated. It was found that high quality CeO2/PTFE composite membranes were obtained under the optimized magnetron sputtering: sputtering time of 120 s and magnetic sputtering power of 40 W. The CeO2/PTFE composite membranes exhibited better comprehensive performance: favorable hydrophibility and tensile strength. In order to improve the performance of CeO2/PTFE composite membranes, CeO2/PTFE/Nafion composite membranes were prepared by Nafion casting. The properties of the composite membrane such as water uptake, ion conductivity were investigated. The water uptake and ion conductivity of CeO2/PTFE /Nafion composite membranes were 30%, 0.071 S/cm, respectively.

Key words: Polytetrafluoroethylene(PTFE) microporous membrane, Magnetron sputtering, Contact angle, Tensile strength

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