Preparation of Polymer Microspheres Using Silane Coupling Agent Modified Nano-SiO2 as Single Stabilizer

摘要：

This paper demonstrates that silica nanoparticles were modified by the four silane coupling agents (KH151, KH-550, KH-560, KH-570) firstly, then polystyrene/silica (PS/SiO2) composite microsphere with PS core and silica nanoparticles shell were prepared by Pickering emulsion polymerization.The characterization of optical microscope (OM), scanning electron microscope (SEM), and thermogravimetic analysis (TGA) illustrates that these microsphere are composed of PS and silica nanoparticles.Silica nanoparticles modified by the different silane coupling agents could form the stable PS/SiO2 microsphere over 70 °C, while the unmodified silica nanoparticles are difficult to form stable PS/SiO2 microspheres at the same temperature.The PS/KH-151-SiO2 microsphere exhibits the least average particle size, while the PS/KH-570-SiO2 microsphere produces the largest.Both SEM and TGA confirm that microsphere surface exists solid nanoparticles.

关键词： Polymer Microsphere Pickering emulsion Nano-SiO2 Silane Coupling Agent

作者: Guang-Hui MA Fa-Ai ZHANG Chang-Sheng GU

作者单位: Key Laboratory of Nonferrous Materials and New Processing Technology,Ministry of Education,College of Chemistry and Biology,Guilin University of Technology,Guilin 541004,China

会议类型: 国际会议

会议名称: 2011 2nd International Conference on Material and Manufacturing Technology(2011第二届材料与制造技术国际会议 ICMMT2011)

会议地点: 厦门

会议语种:英文

页码: 247-251

在线出版日期: 2011-07-08（万方平台首次上网日期，不代表论文的发表时间）