乙烯基介孔二氧化硅泡沫的制备及其表征  

Preparation and Characterization of Vinyl Mesoporous Silica Foam

作　　者：陈炼 杨显德 杨晶 韦良 CHEN Lian;YANG Xiande;YANG Jing;WEI Liang(Guangxi Key Laboratory of Natural Polymer Chemistry and Physics,Nanning Normal University,Nanning 530001,China)

机构地区：[1]广西天然高分子化学与物理重点实验室,南宁师范大学,广西南宁530001

出　　处：《化工技术与开发》2025年第3期39-43,共5页Technology & Development of Chemical Industry

摘　　要：介孔硅材料的有机功能化可以得到独特的结构和性能,从而在实际应用中替代多种聚合物材料。本文在酸性条件下,以P123为模板剂,正硅酸四乙酯(TEOS)为硅源,乙烯基三乙氧基硅烷(VTES)为功能化剂,环己烷为微乳剂,采用共缩合法制备了功能化乙烯基介孔二氧化硅泡沫(MCF)。采用红外光谱(FT-IR)、比表面积分析(BET)和扫描电子显微镜(SEM)对制备的样品进行表征,分析其功能化和微观结构。结果表明,该材料具有均匀的介孔结构,乙烯基嵌入介孔二氧化硅泡沫网络中。随着VTES/TEOS的摩尔比增加,材料的比表面积逐渐增大,孔体积基本保持不变。当VTES/(VTES+TEOS)的摩尔比为20%时,MCF保持了很好的孔隙结构,比表面积为673.5m^(2)·g^(-1),孔体积为1.37cm^(3)·g^(-1),平均孔径为8.2nm。Vinyl-functionalized mesoporous silica foams were synthesized under acidic conditions via a one-step method applied P123 as the structure-directing agent,tetraethyl orthosilicate(TEOS)as the silicon source,vinyl triethoxysilane(VTES)as the functionalizing reagent,cyclohexane as the microemulsion agent.The synthesized samples were characterized by scanning electron microscopy(SEM),infrared spectroscopy(IR),and brunauer-emmett-teller(BET)surface area analysis.The results demonstrate that the material exhibits a uniform mesoporous structure with vinyl groups embedded in the mesoporous network.Furthermore,as the molar ratio of VTES/(VTES+TEOS)increases,the BET specific surface area increases gradually while the pore volume remains nearly constant.when the molar ratio of VTES/(VTES+TEOS)was 20%,the material achieves an optimal pore structure,with a specific surface area of 673.5m^(2)/g,a pore volume of 1.37cm^(3)/g,and an average pore diameter of 8.2nm.

关 键 词：介孔硅泡沫 乙烯基功能化 MCF 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ127.2[化学工程—无机化工]