用二甲基辛基甲氧基硅烷对锂皂石进行边缘改性。
Edge-modification of laponite with dimethyl-octylmethoxysilane.
作者信息
Daniel Lisa M, Frost Ray L, Zhu Huai Yong
机构信息
Inorganic Materials Research Program, School of Physical and Chemical Sciences, Queensland University of Technology, Brisbane Queensland 4001, Australia.
出版信息
J Colloid Interface Sci. 2008 May 15;321(2):302-9. doi: 10.1016/j.jcis.2008.01.032. Epub 2008 Jan 31.
This study examines the edge modification of laponite, with a monoalkoxy silane, dimethyl-octylmethoxysilane. The influence of ultrasonics, aging time and silane concentration on the resultant materials is examined. The silylated clays are characterized by XRD, IES, TGA, and Si NMR. The amount of grafted silane was increased by increasing the ratio of silane to clay, sonication of the reaction mixture and ageing the reaction mixture for no more than 24 h to avoid removal of grafted silane due to equilibrium effects.
本研究考察了用单烷氧基硅烷（二甲基 - 辛基甲氧基硅烷）对锂皂石进行边缘改性。研究了超声、老化时间和硅烷浓度对所得材料的影响。通过X射线衍射（XRD）、红外光谱（IES）、热重分析（TGA）和硅核磁共振（Si NMR）对硅烷化粘土进行表征。通过提高硅烷与粘土的比例、对反应混合物进行超声处理以及将反应混合物老化不超过24小时，以避免由于平衡效应导致接枝硅烷的去除，从而增加接枝硅烷的量。
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