Microfluidic Production of Monodispersed Silica Hollow Microspheres with Controlled Size and Morphology

Abstract

空心SiO2微球由于具有较大的比表面积,较小的密度,表面可渗透性,中空部分可容纳客体分子等优点在制药、生化及化工等多种技术领域都有着巨大的应用价值。本文引用微流控技术在微通道中形成单分散的油包水液滴,并通过在液滴表面的界面聚合反应“一步法”制备出SiO2空心微球,消除了传统模板法制备空心微球时所需的溶剂溶解或高温锻烧等后处理过程,大大简化无机二氧化硅空心微球的制备方法。此外该制备方法所获得的空心微球具有大小可控、单分散性好的优点。并在此基础上,通过调节表面活性剂十八烷基三甲基溴化铵(CTAB)和反应物正硅酸乙酯(TEOS)的浓度,制备出形貌可控的二氧化硅微球,实现其从全空心→部分实心部分空心→...Because of their low density,high specific surface areas and infiltration ability, most importantly, high loading capacity to accommodate guest molecule in their hollow cavity, SiO2 hollow silica microspheres have extensive potential applications in various fields such as medicine, bio-chemistry, chemical engineering. In this study, we developed a facile one-step approach to synthesize monodispers...学位:理学硕士院系专业:化学化工学院化学系_分析化学学号:2052007115095

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