单分散聚苯乙烯微球合成及在三维有序大孔材料制备中的模板作用  

Synthesis of mono-dispersed polystyrene microspheres and application in preparation of three dimensional ordered macroporous(3DOM) material

作　　者：孔庆岚 延姗姗 崔杏雨[1] 郑家军[1] 张鸿雁[1] 潘梦[1] 李瑞丰[1] 

机构地区：[1]太原理工大学能源化工与催化研究中心,太原030024

出　　处：《化工新型材料》2017年第11期54-56,61,共4页New Chemical Materials

基　　金：国家自然科学基金(21371129;21376157;51272169);国家自然科学基金委-中石化联合基金(U1463209)

摘　　要：通过乳液聚合得到了单分散的聚苯乙烯(PS)微球乳液并通过阳离子破乳沉降法实现PS微球自组装,得到了紧密堆积的PS微球的胶体模板剂。向PS胶体模板的空隙填充硅溶胶,再通过焙烧去除模板得到三维有序大孔(3DOM)二氧化硅(SiO_2)材料。采用扫描电子显微镜、透射电子显微镜、红外和热重分析等对合成的3D大孔SiO_2材料进行表征。结果表明:使用粒径不同的PS微球作为模板,制得的3D大孔SiO_2材料的孔径在200~400nm之间。该制备方法为多孔材料的制备开拓了一条可行、便捷的途径。Mono-dispersed polystyrene（PS） microsphere emulsion was prepared and carried out a demulsification to form closely-packed PS microspheres by using cationic surfactant as emulsion breaker.Silica sol was introduced and filled into the void of the above mentioned colloidal template.A Three-dimensional ordered macroporous（3DOM）SiO2 material was obtained by calcination to remove PS microspheres.The as-synthesized samples were characterized by scanning electron microscopy（SEM）,transmission electron microscopy（TEM）,Fourier transform infrared and thermal gravimetric analysis.The results showed that the particle size of mono-dispersed PS microspheres can be adjusted at range from 200 nm to 400 nm by controlling the concentration of added monomer or emulsifier.The method may prove to be a general platform for designing 3DOM materials with potentially broader application to other porous materials.

关 键 词：单分散 聚苯乙烯微球 胶体模板 三维有序大孔材料 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业]