超疏水、超亲油MTES-DMDES型柔性气凝胶的制备及表征
Polymer Materials Science & Engineering(2016)
Abstract
以甲基三乙氧基硅烷(MTES)和二甲基二乙氧基硅烷(DMDES)为前驱体,水为反应物,乙醇为溶剂,盐酸和氨水为催化剂,十六烷基三甲基溴化铵(CTAB)为表面活性剂,通过溶胶-凝胶法和超临界干燥制备得到疏水亲油MTES-DMDES型柔性气凝胶块体.通过红外光谱、X射线衍射、扫描电镜、X射线能量色谱、应力-应变,疏水性测试、热重等测试分析发现,气凝胶具有三维网络骨架结构,密度低至0.0897 g/cm3,最大应变达到80%.应力低至36.85 kPa,疏水接触角为153.6°,热稳定温度高达400℃.能从水中快速高效去除油污,是具有广阔应用前景的油/水分离材料.
MoreKey words
aerogel,hydrophobic,oleophylic,flexibility
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