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

作　　者：DAI Xin GENG Lei LIU Dan LU Chang-li YANG Bai 

机构地区：[1]Institute of Chemistry, Northeast Normal University, Changehun 130024, P. R. China [2]State Key Laboratory of Supramolecular Structure ＆ Materials, College of Chemistry, Jilin University, Changehun 130012, P. R. China

出　　处：《Chemical Research in Chinese Universities》2011年第5期896-899,共4页高等学校化学研究（英文版）

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

摘　　要：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.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.

关 键 词：Three-dimensionally ordered macroporous（3DOM） Pore-filling Proton conducting membrane Polymercomposite material 

分 类 号：TQ425.23[化学工程] TB383[一般工业技术—材料科学与工程]