Growth Mechanism of Large Monodispersed Silica Particles Prepared from Tetraethoxysilane in the Presence of Sodium Dodecyl Sulfate

被引：0
作者：
Hideki Nishimori
Masahiro Tatsumisago
Tsutomu Minami
机构：
[1] Osaka Prefecture University,Department of Applied Materials Science, College of Engineering
来源：
Journal of Sol-Gel Science and Technology | 1997年 / 9卷
关键词：
silica particles; tetraethoxysilane; sodium dodecyl sulfate; chronomal analysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Monodispersed silica particles up to ca. 1.2 μm in diameter were prepared by hydrolysis of tetraethoxysilane in the presence of sodium dodecyl sulfate (SDS). The particle size was increased with an increase of SDS added. The geometrical standard deviation of the particles was decreased with an increase of SDS. In the earlier reaction stage, double spherical particles by the coalescence of the particles were frequently observed when large amounts of SDS were added. Particle size was gradually increased after the coalescence occurred and spherical particles were finally obtained. The results of Nielsen's chronomal analysis suggest that the polynuclear layer growth took place after the coalescence of the particles in the presence of larger amount of SDS.
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页码：25 / 31
页数：6
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