Preparation and Properties of Corrosion Inhibitor-Loaded Hollow Silica Microspheres

被引：0
|
作者：
Cai J. [1 ]
Li Y. [2 ,3 ]
Wu C. [2 ,3 ]
Ding X. [1 ]
Yang H. [1 ,2 ,3 ]
机构：
[1] School of Materials Science and Engineering, Zhejiang University, Hangzhou
[2] Zhejiang-California Nano-Systems Institute, Zhejiang University, Hangzhou
[3] Research Institute of Zhejiang University-Taizhou, Taizhou, 318000, Zhejiang
来源：
Kuei Suan Jen Hsueh Pao/Journal of the Chinese Ceramic Society | 2020年 / 48卷 / 04期
关键词：
Benzotriazole; Polystyrene microspheres; Silicon dioxide microspheres; Sustained release;
D O I：
10.14062/j.issn.0454-5648.20190488
中图分类号：
学科分类号：
摘要：
Polystyrene microspheres were prepared via an emulsion polymerization method and used as hard templates to form hollow mesoporous silica microspheres. The structural properties of silica microspheres were characterized by scanning electron microscopy, transmission electron microscopy, thermogravity analysis, small angle X-ray diffraction, nitrogen adsorption-desorption isotherm analysis. The effects of synthesis parameters (i.e., amounts of ammonia and silane precursor) on the microsphere size, thickness and mesopore size of silica microspheres were investigated, and the optimum reaction conditions were 6.25 mL of ammonia and 10 g of tetraethylorthosilicate. The hollow microspheres as a host are loaded with benzotriazole, and then coated with a two-layer polyelectrolyte shell by a layer-by-layer deposition process. The inhibitor release profile revealed that the polyelectrolyte shell lowered the release rate of benzotriazole-loaded hollow silica microspheres by 5 times. © 2020, Editorial Department of Journal of the Chinese Ceramic Society. All right reserved.
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页码：584 / 591
页数：7
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