Bose Anima, Gilpin Roger K., Jaroniec Mietek
Department of Chemistry, Kent State University, Kent, Ohio, 44242
J Colloid Interface Sci. 2001 Aug 1;240(1):224-228. doi: 10.1006/jcis.2001.7688.
Nitrogen adsorption and high-resolution thermogravimetry were used to study a series of samples prepared by coating porous silica with different amounts of siloxane polymer. Thermogravimetry was employed to investigate the thermal behavior of the coated samples as well as the polymer-silica interactions. Nitrogen adsorption was used to monitor the changes in the specific surface area, porosity, and surface properties upon polymer coating. It is shown that the gradual changes in the aforementioned properties are observed up to some limiting coating level. Also, in this coating range a rather uniform film is formed by siloxane polymer on the silica surface. Copyright 2001 Academic Press.
采用氮气吸附和高分辨率热重分析法研究了一系列通过用不同量的硅氧烷聚合物包覆多孔二氧化硅制备的样品。利用热重分析法研究了包覆样品的热行为以及聚合物与二氧化硅之间的相互作用。采用氮气吸附法监测聚合物包覆后比表面积、孔隙率和表面性质的变化。结果表明，在达到一定的极限包覆水平之前，上述性质会逐渐发生变化。此外，在该包覆范围内，硅氧烷聚合物在二氧化硅表面形成了相当均匀的薄膜。版权所有2001年学术出版社。
