CRCU

Chemical Research in Chinese Universities ›› 2011, Vol. 27 ›› Issue (5): 896-899.

• Articles • Previous Articles     Next Articles

Pore-filling Three-dimensionally Ordered Macroporous Polyimide Composite Proton Conducting Membranes

DAI Xin1, GENG Lei1, LIU Dan1, LÜ Chang-li1* and YANG Bai2*   

  1. 1. Institute of Chemistry, Northeast Normal University, Changchun 130024, P. R. China;
    2. State Key Laboratory of Supramolecular Structure & Materials, College of Chemistry, Jilin University, Changchun 130012, P. R. China
  • Received:2010-12-10 Revised:2011-05-04 Online:2011-09-25 Published:2011-09-06
  • Contact: Lü Chang-li;YANG Bai E-mail:lucl055@ nenu.edu.cn; byangchem@jlu.edu.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China(Nos.20704004, 21074019) and the Natural Science Foundation of Jilin Province, China(No.20101539).

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Abstract: The silica opal templates were prepared from three silica colloids of different diameters of 230 nm, 500 nm and 1.5 mm by a filtration route. The large-scale stable opal template membranes after sintering the deposited SiO2 opal template can be successfully obtained by optimizing the pH value and NaCl concentration in silica    colloidal solutions. The three-dimensionally ordered macroporous(3DOM) polyimide membranes without crack were fabricated by reproducing the structure of silica opal template. We prepared the pore-filling composite proton exchange membranes by filling the 3DOM structure with proton conducting organosilane sol. The result indicates that the composite membranes exhibit higher water uptake than pure filling organosilane gel. The proton conductivity increased with the increasing of pore cell in composite membranes.

Key words: Three-dimensionally ordered macroporous(3DOM), Pore-filling, Proton conducting membrane, Polymer composite material