摘要
Monodisperse silicon dioxide particles have been prepared by the seed growth method,and different coupling agents were used for modifying these silica particles.The results show that the size deviation of silica particles modified with[3 (methacryloyloxy)propyl] trimethoxysilane(KH 570) is much lower than that of silica particles modified with vinyl triethyloxy silane as the coupling agent.In the presence of ethanol and water,styrene may react with silica modified by KH 570 in dispersion polymerization.It was discovered through transmission electron microscopy and energy spectrum that the modified silica particles were successfully encapsulated with polystyrene.The number of silica particles encapsulated with polystyrene was continually decreased with the increase of the size of silica particles.Moreover,the number of silica particles was nearly unity in each SiO 2/PS composite particle when the silica particle size was greater than 410?nm.
Monodisperse silicon dioxide particles have been prepared by the seed growth method, and different coupling agents were used for modifying these silica particles. The results show that the size deviation of silica particles modified with [3-(methacryloyloxy) propyl] trimethoxysilane (KH-570) is much lower than that of silica particles modified with vinyl triethyloxy silane as the coupling agent. In the presence of ethanol and water, styrene may react with silica modified by KH-570 in dispersion polymerization. It was discovered through transmission electron microscopy and energy spectrum that the modified silica particles were successfully encapsulated with polystyrene. The number of silica particles encapsulated with polystyrene was continually decreased with the increase of the size of silica particles. Moreover, the number of silica particles was nearly unity in each SiO2/PS composite particle when the silica particle size was greater than 410 nm.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2005年第2期289-292,共4页
Acta Polymerica Sinica
基金
中国石油集团创新基金 (基金号 2 0 0 2F70 13 6)
中国石油股份公司攻关项目 (项目号 0 3 0 40 7 0 6)资助
