info:eu-repo/semantics/article
Structure and properties of self-assembled fluorocarbon-silica nanocomposites
Fecha
2008-02-11Registro en:
Rodríguez Abreu, Carlos; Botta, Pablo Martín; Rivas, José; Aramaki, Kenji; López Quintela, Manuel A.; Structure and properties of self-assembled fluorocarbon-silica nanocomposites; Elsevier Science; Journal of Non-crystalline Solids; 354; 10-11; 11-2-2008; 1074-1079
0022-3093
CONICET Digital
CONICET
Autor
Rodríguez Abreu, Carlos
Botta, Pablo Martín
Rivas, José
Aramaki, Kenji
López Quintela, Manuel A.
Resumen
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 (≈2.8), which is almost independent on frequency. Moreover, the dielectric response can be interpreted in the framework of the Maxwell-Wagner model.