Preparation of hexadecyltrimethoxysilane-modified silica nanocomposite hydrosol and superhydrophobic cotton coating
Preparation of hexadecyltrimethoxysilane-modified silica nanocomposite hydrosol and superhydrophobic cotton coating
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DOI：
10.1007/s12221-015-1082-x
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发表时间：
2015-06
影响因子：
2.5
通讯作者：
Lihui Xu;Liming Wang;Yong Shen;Ying Ding;Z. Cai
中科院分区：
文献类型：
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作者：
Lihui Xu;Liming Wang;Yong Shen;Ying Ding;Z. Cai
以甲基三甲氧基硅烷（MTMS）和十六烷基三甲氧基硅烷（HDTMS）为前驱体，在碱性条件下，在表面活性剂存在下，通过水基溶胶-凝胶反应制备了HDTMS改性SiO2纳米复合水溶胶。分析了碱催化剂用量和表面活性剂浓度对H-SiO2纳米复合水溶胶粒径及其分布的影响。采用粒度分析仪、傅里叶变换红外光谱仪（FTIR）、热重分析仪（TG）和场发射扫描电镜（FE-SEM）对所得H-SiO2纳米复合材料进行了表征。采用一步法将H-SiO2纳米复合水溶胶涂覆到棉织物样品上。SiO2纳米粒子的粗糙表面结构与长链烷基硅烷的低表面能协同作用，使处理后的棉织物具有优异的超疏水性能。
The hexadecyltrimethoxysilane(HDTMS)-modified silica (H-SiO2) nanocomposite hydrosol was prepared via water-based sol-gel reaction with methyltrimethoxysilane (MTMS) and HDTMS as precursors under alkaline condition in the presence of surfactant. The influences of base catalyst amount and surfactant concentration on the particle size and distribution of H-SiO2nanocomposite hydrosol were analyzed. The obtained H-SiO2nanocomposite was characterized by particle size analyzer, Fourier-transform infrared spectrometry (FTIR), thermal gravimetric (TG) and field emission scanning electron microscopy (FE-SEM), respectively. The H-SiO2nanocomposite hydrosol was applied to coat onto the cotton fabric sample via one-step process. The cooperative action of rough surface structure due to the silica nanoparticles and the low surface energy caused by long-chain alkylsilane in the H-SiO2nanocomposite coating provided the treated cotton fabric with excellent superhydrophobicity.