微流控制备单分散微米级SiO<sub>2</sub>微球

Gao Cunmei; Luo Xuan; FanG Yu; ZhanG QinGjun; Du Kai; TanG YonGjian

doi:10.3788/HPLPB20122406.1401

Volume 24 Issue 06

May 2012

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Article Navigation > High Power Laser and Particle Beams > 2012 > 24(06): 1401-1405

Gao Cunmei, Luo Xuan, FanG Yu, et al. 微流控制备单分散微米级SiO2微球[J]. High Power Laser and Particle Beams, 2012, 24: 1401-1405. doi: 10.3788/HPLPB20122406.1401

Citation:

Gao Cunmei, Luo Xuan, FanG Yu, et al. 微流控制备单分散微米级SiO₂微球[J]. High Power Laser and Particle Beams, 2012, 24: 1401-1405. doi: 10.3788/HPLPB20122406.1401

Gao Cunmei, Luo Xuan, FanG Yu, et al. 微流控制备单分散微米级SiO2微球[J]. High Power Laser and Particle Beams, 2012, 24: 1401-1405. doi: 10.3788/HPLPB20122406.1401

Citation:

Gao Cunmei, Luo Xuan, FanG Yu, et al. 微流控制备单分散微米级SiO₂微球[J]. High Power Laser and Particle Beams, 2012, 24: 1401-1405. doi: 10.3788/HPLPB20122406.1401

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微流控制备单分散微米级SiO₂微球

doi: 10.3788/HPLPB20122406.1401

1.
School of Materials Science and Engineering,Southwest University of Science and Technology,Mianyang 621010,China;
2.
Research Center of Laser Fusion,CAEP,P.O.Box 919-987,Mianyang 621900,China

Received Date: 2011-08-26
Rev Recd Date: 2011-12-27
Publish Date: 2012-06-15

Abstract

Abstract

采用软模板法制备出了聚二甲基硅氧烷微流控装置。利用该装置讨论了正硅酸乙酯和氨水的用量分别对反应体系凝胶化时间的影响，确定了制备SiO2微球的优化反应体系，即二甲基乙酰胺、正硅酸乙酯和氨水的体积比为8∶4∶1，实验所需的反应温度为60 ℃。实验发现：在微流体通道中，分散相的流速越大，粒径越大；连续相流速越大，粒径越小。因此，通过控制微流控装置中分散相和连续相的流速制备了粒径40~220 m的单分散SiO2微球，并对其形貌进行表征。光学显微镜和粒径分析均表明所制备的SiO2微球球形度高，单分散性好。
- silica spheres,
- microfluidic technology,
- monodispersity,
- polydimethylsiloxane,
- tetraethyl orthosilicate