强激光与粒子束, 2015, 27 (2): 024155, 网络出版: 2015-02-15
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
Dispersion of SiO2 nanoparticles in nonaqueous solvent with surfactant
摘要
研究了粒径10~100 nm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30.2 nm,与透射电镜测试结果吻合,展现了良好的分散性。
Abstract
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 30.2 nm according to dynamic light scattering (DLS) test and exhibits nice agreement with transmission electron microscopy(TEM) result under optimal surfactant volume ratio of 6%.
王超, 李晓媛, 罗清, 吉方, 胡素荣, 魏齐龙, 张云飞, 黄文, 汤光平, 何建国. 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[J]. 强激光与粒子束, 2015, 27(2): 024155. Wang Chao, Li Xiaoyuan, Luo Qing, Ji Fang, Hu Surong, Wei Qilong, Zhang Yunfei, Huang Wen, Tang Guangping, He Jianguo. Dispersion of SiO2 nanoparticles in nonaqueous solvent with surfactant[J]. High Power Laser and Particle Beams, 2015, 27(2): 024155.
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