【摘要】 以纳米SiO₂粒子为原料,六甲基二硅氮杂烷（HMDS）和γ-缩水甘油醚氧丙基三甲氧基硅烷（KH560）分别作为亲油改性剂和亲水改性剂,采用溶胶-凝胶法制备了亲油和亲水纳米SiO₂粒子.通过亲油SiO₂和亲水SiO₂粒子表面化学键的偶合,将亲油粒子和亲水粒子偶联,制备了粒径为30 nm的双球状双亲纳米SiO₂粒子.以双球状双亲纳米SiO₂粒子作为稳定剂,制备了环己烷/水Pickering乳液,证明了双球状纳米SiO₂粒子具有较好的双亲性能.更多还原

【Abstract】 Amphiphilic silica nanoparticles with double-sphere morphology were fabricated via the assembly of hydrophobic silica nanoparticles and hydrophilic nanoparticles through chemical interaction. Silica nanopartilces prepared by the sol-gel method were modified by hexamethyldisilazane( HMDS) and 3-glycidoxypropyltrimethoxysilane( KH560) to obtain hydrophobic silica nanoparticles and hydrophilic silica nanoparticles respectively,which were then further linked together by the chemical bond on the surface of nanoparticles. The as-prepared amphiphilic silica nanoparticles with double-sphere morphology can stabilize the cyclohexane in water Pickering emulsion,indicating the good amphiphilic property of amphiphilic silica nanoparticles with double-sphere morphology.更多还原