表面活性剂辅助二氧化硅纳米颗粒在非水基液中的分散研究(英文)  

Dispersion of SiO_2 nanoparticles in nonaqueous solvent with surfactant

作　　者：王超[1,2] 李晓媛[1] 罗清[1] 吉方[1,2,3] 胡素荣[1] 魏齐龙[1] 张云飞[1] 黄文[1] 汤光平[1] 何建国[1] 

机构地区：[1]中国工程物理研究院机械制造工艺研究所,四川绵阳621900 [2]中国工程物理研究院超精密加工技术重点实验室,四川绵阳621900 [3]复旦大学光科学与工程系,上海200433

出　　处：《强激光与粒子束》2015年第2期290-293,共4页High Power Laser and Particle Beams

基　　金：supported by National Natural Science Foundation of China(51202228);High-end CNC Machine Tools and Basic Manufacturing Equipment Major National Science and Technology Project(2013ZX04006011);Laboratory of Precision Manufacturing Technology(KF13002);Foundation Research Program of Defense

摘　　要：研究了粒径10~100nm的二氧化硅纳米颗粒在非水基液中的表面活性剂辅助分散。结合颗粒表面特定官能团结构,针对性选择了合适的表面活性剂,氢键桥梁作用和长链分子空间位阻作用抑制了颗粒团聚行为。当表面活性剂体积分数6%的时候,动态光散射测试结果表明颗粒中位尺度30.2nm,与透射电镜测试结果吻合,展现了良好的分散性。Spheric SiO2 nanoparticles with the sizes range in 10-100 nm are dispersed in nonaqueous solvent under the assistant of surfactant.Hydrogen bond bridge effect and long chain molecule spatial hindrance are two key roles for dispersion.The particles' median size is 30.2nm according to dynamic light scattering(DLS)test and exhibits nice agreement with transmission electron microscopy(TEM)result under optimal surfactant volume ratio of 6%.

关 键 词：二氧化硅 非水基液 氢键 

分 类 号：O647.2[理学—物理化学] TB383.1[理学—化学]