Structure and properties of self-assembled fluorocarbon-silica nanocomposites

被引：2

作者：

Rodriguez-Abreu, Carlos ^{[1
,2
]}

Botta, Pablo M. ^{[3
]}

Rivas, Jose ^{[3
]}

Aramaki, Kenji ^{[4
]}

Lopez Quintela, Manuel Arturo ^{[2
]}

机构：

[1] CSIC, IIQAB, ES-08034 Barcelona, Spain

[2] Univ Santiago de Compostela, Fac Quim, Dept Quim Fis, E-15782 Santiago De Compostela, Spain

[3] Univ Santiago de Compostela, Fac Quim, Dept Fis Aplicada, E-15782 Santiago De Compostela, Spain

[4] Yokohama Natl Univ, Grad Sch Environm & Informat Sci, Hodagaya Ku, Yokohama, Kanagawa 2408501, Japan

来源：

JOURNAL OF NON-CRYSTALLINE SOLIDS | 2008年 / 354卷 / 10-11期

关键词：

X-ray diffraction; nanocomposites; NMR; MAS-NMR and NQR; organic-inorganic hybrids; sol-gels (xerogels); calorimetry;

D O I：

10.1016/j.jnoncrysol.2007.08.003

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The formation of fluorocarbon-silica nanocomposites by the self-assembly of a fluorinated surfactant and aminoalkoxysilane coupling agents was studied by X-ray diffraction, electron microscopy, NMR spectroscopy and thermal analysis. The prepared materials posses a lamellar nanostructure consisting of non-crystalline fluorinated and condensed silica layers, the latter being very thin. The prepared materials show interesting properties for applications, such as hydrophobicity, thermal stability, high content of aminopropyl groups and low dielectric constant (approximate to 2.8), which is almost independent on frequency. Moreover, the dielectric response can be interpreted in the framework of the Maxwell-Wagner model. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1074 / 1079

页数：6

共 33 条

[21] Mesomorphous structure and properties of non-equimolar complexes of poly (ethylenimine) and perfluorooctanoic acid [J].