Synthesis of 3D ordered porous polystyrene using silica template  

作　　者：Jianhua Rong Zhenzhong Yang Kai Qi Xigao Jin 

机构地区：[1]Chinese Acad Sci, Inst Chem, Ctr Mol Sci, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China

出　　处：《Chinese Science Bulletin》2001年第4期306-308,共3页

基　　金：by the National Natural Science Foundation of China (Grant No. 29774038), and the National Key Project for Fundamental Research, "Macromolecular Condensed State" of the Ministry of Science and Technology of China. The support by the Polymer Physics Labor

摘　　要：A rigid colloidal silica template was formed by self-assembly of the monodispersed silica spheres prepared according to Stober method. The silica template is highly ordered, which was verified by bright color effect due to Bragg diffraction and the results of SEM. The free radical polymerization of styrene was allowed within the interstices of the rigid template to result in the formation of the three-dimensional periodic silica/polystyrene nano-composites. The titled porous polystyrene was prepared by chemical decomposition of the template with concentrated aqueous hydrofluoric acid. Scanning electron microscopy characterization showed that the macroporous polystyrene has ordered arrays of the uniform pores replicated from the template. Moreover, it was found that the morphology of the as-synthesized macroporous polystyrene was greatly affected by the connectivity of the silica spheres treated under different conditions.A rigid colloidal silica template was formed by self-assembly of the monodispersed silica spheres prepared according to St?ber method. The silica template is highly ordered, which was verified by bright color effect due to Bragg diffraction and the results of SEM. The free radical polymerization of styrene was allowed within the interstices of the rigid template to result in the formation of the threedimensional periodic silica/polystyrene nano-composites. The titled porous polystyrene was prepared by chemical decomposition of the template with concentrated aqueous hydrofluoric acid. Scanning electron microscopy characterization showed that the macroporous polystyrene has ordered arrays of the uniform pores replicated from the template. Moreover, it was found that the morphology of the as-synthesized macroporous polystyrene was greatly affected by the connectivity of the silica spheres treated under different conditions.

关 键 词：TEMPLATE synthesis COLLOIDAL SILICA THREE-DIMENSIONAL order MACROPOROUS polystyrene. 

分 类 号：TQ325[化学工程—合成树脂塑料工业]