期刊
APPLIED CLAY SCIENCE
卷 85, 期 -, 页码 109-115出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.clay.2013.09.004
关键词
Silane; Montmorillonite; Clay polymer nanocomposite (CPN); X-ray diffraction; Si-29 CP MAS NMR; Thermogravimetric analysis
资金
- Ministry of Higher Education, Science and Technology of the Republic of Slovenia [3211-10-000057]
- Ministry of Science, Education and Sports of the Republic of Croatia [125-1252970-3005]
In this work, the silylation of sodium montmorillonite (Na+-Mt, Nanofil 757 (R)) was performed using (3-aminopropyl)triethoxy silane (APTES). Different reaction conditions were used varying the reaction time and the amount of the aminosilane. Epoxy-based nanocomposites were prepared with different amounts of silylated Mt or commercial organically modified Mt intercalated with stearylbenzyldimethyl ammonium chloride (Nanofil 2 (R)) and distearyldimethyl ammonium chloride (Nanofil 8 (R)), respectively. The grafting/intercalation of the aminosilane inside the Mt interlayer spaces was studied by means of Fourier transform infrared (FTIR), X-ray diffraction (XRD), nuclear magnetic resonance (NMR) and thermogravimetric analysis (TGA). After isothermal curing at 90 degrees C the Mt epoxy nanocomposites were analyzed by means of XRD and dynamic mechanical analysis (DMA). The glass transition temperature of all prepared nanocomposites containing silylated Mt, is slightly higher than that of the neat epoxy (2 to 5 degrees C). In the presence of 1 to 5 m% of silylated Mt in epoxy matrix the storage modulus increases from about 5 to 15% at 25 degrees C, respectively, compared to the pristine epoxy matrix, while only 0-4% increase was observed for epoxy nanocomposites with commercial modified Mt. (C) 2013 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据