奈米級矽酸膠表面改質之研究

The Study of Surface Modification of Nano Colloidal Silica

10.6409/JMSE.200406.0130

蔡明雄(M. S. Tsai)；林憶如(Y. J. Lin)；李淑杏(S. H. Lee)；王蕾蕾(L. L. Wang)

奈米顆粒、矽酸膠、表面改質 ； nano particle ； colloidal siclica ； surface modification

材料科學與工程

36卷2期（2004 / 06 / 01）

130 - 133

繁體中文

The article is the study of modification of nano-grade colloidal silica. The purpose of this modification is to increase the stability of colloidal silica in wide pH range for increasing its application. From the experimental result, we found the IEP of non-modified colloidal silica is less than 2. After coating Al3+ on the surface of colloidal silica, the IEP disappear and shown negative at overall testing range (i.e. acid and base). The commercial colloidal silica (EVER- GREEN Co, trade. mark 33K) is a seed in this study. The effect of Al3+ concentrations and seed concentrations to the particle growth mechanism had been studied and discussed in this article.

The article is the study of modification of nano-grade colloidal silica. The purpose of this modification is to increase the stability of colloidal silica in wide pH range for increasing its application. From the experimental result, we found the IEP of non-modified colloidal silica is less than 2. After coating Al3+ on the surface of colloidal silica, the IEP disappear and shown negative at overall testing range (i.e. acid and base). The commercial colloidal silica (EVER- GREEN Co, trade. mark 33K) is a seed in this study. The effect of Al3+ concentrations and seed concentrations to the particle growth mechanism had been studied and discussed in this article.