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http://dx.doi.org/10.6117/kmeps.2021.28.4.079

Effect of the Surfactant Concentration on the Formation of Water Glass-based Porous Hollow Silica Microsphere  

Lee, Jihun (Department of Materials Science and Engineering, Yonsei University)
Kim, Younghun (Department of Materials Science and Engineering, Yonsei University)
Kim, Taehee (Department of Materials Science and Engineering, Yonsei University)
Park, Hyung-Ho (Department of Materials Science and Engineering, Yonsei University)
Publication Information
Journal of the Microelectronics and Packaging Society / v.28, no.4, 2021 , pp. 79-83 More about this Journal
Abstract
In this study, hollow silica microspheres (HSM) of various sizes formed according to the concentration of surfactants using water glass as a precursor, which is advantageous for commercialization due to its lower unit cost compared to conventional silicon alkoxide (tetraethyl orthosilicate, TEOS) was synthesized. The physical properties of the silica hollow microspheres according to the concentration of surfactant were analyzed using Fourier transform infrared, contact angle measurement, Brunauer-Emmett-Teller and Barrett-Joyner-Halenda analyzers and field emission scanning electron microscopy. When porous water glass-based hollow silica spheres were prepared by adding a surfactant at an appropriate concentration, it was confirmed that excellent hollow silica spheres were formed with a specific surface area of 169 m2/g, an average particle size of 25.3 ㎛, and a standard deviation of 6.25.
Keywords
surfactant; hollow microsphere; silica sphere; water glass; emulsion;
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