Preparation of superhydrophobic silica nanoparticles by microwave assisted sol–gel process

被引：0
|
作者：
A. Santiago
A. González
J. J. Iruin
M. J. Fernández-Berridi
L. Irusta
机构：
[1] University of the Basque Country,Department of Polymer Science and Technology and Institute for Polymer Materials (POLYMAT)
来源：
Journal of Sol-Gel Science and Technology | 2012年 / 61卷
关键词：
Superhydrophobic silica; Microwave; Nanoparticles;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Hydrophobic silica nanoparticles were obtained by microwave assisted sol–gel method using a two-step procedure. In the first step different size silica particles were generated from tetraethyl orthosilicate and in the second one the silica particles were hydrophobized using hexadecyl trimethoxysilane (HDTMOS). Under microwave irradiation, high conversion degrees were obtained at relatively short reaction times. The HDTMOS added in the second step instead of coating the silica nanoparticles generated new ones and therefore the final product showed a bimodal size distribution. All the synthesized nanoparticles gave rise to high water contact angles (≈150°) and low hysteresis values.
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页码：8 / 13
页数：5
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