从基于EO_(76)PO_(29)EO_(76)的丁醇-水乳液体系合成中空二氧化硅巨球  

The Synthesis of Gigantic Hollow Silica Spheres from an EO_(76)PO_(29)EO_(76) Based Butanol-Water Emulsion System

作　　者：全裕霞[1] 孙乾耀[1] 刘植昌[1] 徐春明[1] Vrieling E.G 

机构地区：[1]中国石油大学(北京)重质油国家重点实验室,北京102249 [2]Biomedical Research Center,University of Groningen,Groningen,NL

出　　处：《硅酸盐通报》2007年第5期1007-1010,1029,共5页Bulletin of the Chinese Ceramic Society

基　　金：国家自然科学基金(No20676149);教育部留学回国启动基金;中国石油大学重质油加工国家重点实验室开放基金资助

摘　　要：利用廉价的水玻璃为二氧化硅前驱体,在三嵌段高分子EO76PO29EO76/正丁醇/乙醇/水的乳液体系中,能够使二氧化硅快速沉降,缩聚并形成中空的氧化硅巨球,球径达30～40μm左右,用SEM、TEM、BET、光学显微镜、SAXS、29SiMASNMR详细考察了产物的形貌特点以及形成过程。Gigantic hollow silica spheres with hierarchical particle porosity were obtained from an EO76 PO29 EO76 based emulsion system in conlbination with the inexpensive sodium silicate as the silica source, which is unique in its extremely rapid silica condensation and in the resulting hierarchical morphology. The samples were characterized by SEM, TEM, BET, optical microscopy, SAXS and 29Si MAS NMR.

关 键 词：空心球 多级形貌 硅酸盐 嵌段聚合物 

分 类 号：TH145.11[一般工业技术—材料科学与工程]