Preparation of Silica Microcapsules by Sol-Gel Method in W/O Emulsion

JOURNAL OF CHEMICAL ENGINEERING OF JAPAN

Hideo Ono²  Koji Takahashi¹ 

[1] Department of Materials Science and Engineering, Yamagata University;Nihon Millipore Co. Ltd.

关键词: Silica;    W/O Emulsion;    AOT;    Microcapsule;    Agitation;   

DOI  :  10.1252/jcej.31.808

来源: Maruzen Company Ltd

【 摘 要 】

References(25)Cited-By(15)Spherical silica microcapsules whose average diameter was 3.6 μm were synthesized by the sol-gel method in W/O emulsions containing an anionic surfactant at a high water to surfactant molar ratio. Special agitational conditions are needed to prepare spherical silica microcapsules. The properties of the resulting silica microcapsules were determined by Fourier-transform infrared spectroscopy and scanning electron microscopy. As the spherical silica particles have a hollow core structure, hydrolysis and condensation of TEOS occur at the micellar periphery, and the diameter of the water droplets in the W/O emulsion at a high water to surfactant molar ratio (Wo) are micron sized.

【 授权许可】

Unknown