【摘要】 在水/甲苯/十二烷基硫酸钠/正戊醇形成的四元W/O型微乳液中,通过渗透反应和融合反应分别合成了不同形貌的超细二氧化硅颗粒。利用相图研究了W/O型微乳液系统相行为稳定性与制备条件的关系。讨论了以反相微乳液为媒介,不同制备工艺及R值对产品形貌和粒径大小的影响,并对其机理进行了分析。更多还原

【Abstract】 Ultrafine silica particles with different morphologies have been prepared in water/toluene/sodium dodecylsulphate/1-pentanol water in oil microemulsion systems by means of penetration reactions and amalgamation reactions.The phase diagrams for the W/O microemulsion were plotted to study the relationship between the W/O microemulsion composition and the preparation conditions.The effects of varying the process and the value of R(ratio by mass of water:(surfactant +cosurfactant)) on the shape and size of the resulting silica particles were studied.A mechanism for the formation of ultrafine silica by the different reaction pathways has been proposed.更多还原