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首页> 外文会议>International Conference on Processing amp; Manufacturing of Advanced Materials; 20060704-08; Vancouver(CA) >Preparation and characterization of octyl methoxy cinnamate (OMC; 2-ethylhexyl-p-methoxy cinnamate)-trapped mesoporous silica using lecithin
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Preparation and characterization of octyl methoxy cinnamate (OMC; 2-ethylhexyl-p-methoxy cinnamate)-trapped mesoporous silica using lecithin

机译：卵磷脂制备的甲氧基肉桂酸辛酯（OMC； 2-乙基己基对甲氧基肉桂酸酯）的介孔二氧化硅的制备与表征

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摘要

The octyl methoxy cinnamate(OMC; 2-ethylhexyl-p-methoxy cinnamate)-trapped mesoporous silica samples were synthesized using lecithin, which may be isolated from either yolk or soybeans. Lecithin was used as a hydrophobic surfactant and emulsifier for making nano-emulsified OMC before trapping the latter in the pores of mesoporous silica. These organic/inorganic hybrid materials were prepared, using the sol-gel method, according to two different groups of surfactant-solvents-lecithin-ethanol (group-LE) and CTAC-water (group-CW). Their structures, pore sizes, surface areas, degrees of stability, degrees of solubility, and other properties were examined and compared. All the samples showed that the nano-emulsified OMC that had been trapped in the rod micelle of silica was stably encapsulated and immobilized. The group-LE samples had relatively larger pore sizes and were better able to trap and release their control of the nano-emulsified OMC compared to the group-CW samples. The group-LE and group-CW samples showed the average pore sizes of 7.18 nm and 2.64 nm as well as the surface areas of 182.43 m~2/g and 1202.72 m~2/g, respectively.
机译：使用卵磷脂合成了捕获的甲氧基肉桂酸辛酯（OMC； 2-乙基己基对甲氧基肉桂酸酯）介孔二氧化硅样品，该卵磷脂可以从蛋黄或大豆中分离出来。卵磷脂用作疏水性表面活性剂和乳化剂，用于制备纳米乳化的OMC，然后将其捕获在中孔二氧化硅的孔中。根据两种不同的表面活性剂-溶剂-卵磷脂-乙醇（LE组）和CTAC-水（CW组），使用溶胶-凝胶法制备这些有机/无机杂化材料。检查并比较了它们的结构，孔径，表面积，稳定性，溶解度和其他性能。所有样品都表明，被困在二氧化硅棒状胶束中的纳米乳化的OMC被稳定地包裹和固定。与CW组样品相比，LE组样品具有相对较大的孔径，并且能够更好地捕获和释放其对纳米乳化OMC的控制。 LE组和CW组样品的平均孔径分别为7.18 nm和2.64 nm，表面积分别为182.43 m〜2 / g和1202.72 m〜2 / g。

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