TY - JOUR
T1 - Polymer-silica nanocomposites prepared by sol-gel technique
T2 - Nanoindentation and tapping mode AFM studies
AU - Rodríguez Hernández, José Carlos
AU - Salmerón Sánchez, Manuel
AU - Gómez Ribelles, José Luís
AU - Monleón Pradas, Manuel
N1 - Funding Information:
The authors acknowledge the support of the Spanish Science and Technology Ministry through the MAT 2002-04239-C03-03 project and the support to their research group by the Generalitat Valenciana through the Groups 03/018 project. We would like to thank the Microscopy Service of the Technical University of Valencia, where the AFM assays were performed.
Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2007/7
Y1 - 2007/7
N2 - Polymer-silica nanocomposites based on poly(2-hydroxyethyl acrylate) (PHEA) have been prepared by the simultaneous polymerization of the organic and the silica phases in a sol-gel process with the silica precursor tetraethyl orthosilicate (TEOS). The structure of this system is investigated using atomic force microscopy (AFM) in the tapping mode and in nanoindentation experiments. The structure of the PHEA/silica hybrids strongly depends on the ratio of both components in the system. For silica weight fractions lower than 0.15, the system consists of aggregated silica particles dispersed in the organic matrix; above that concentration of silica the structure is co-continuous with that of the organic matrix, similarly to two interpenetrated networks.
AB - Polymer-silica nanocomposites based on poly(2-hydroxyethyl acrylate) (PHEA) have been prepared by the simultaneous polymerization of the organic and the silica phases in a sol-gel process with the silica precursor tetraethyl orthosilicate (TEOS). The structure of this system is investigated using atomic force microscopy (AFM) in the tapping mode and in nanoindentation experiments. The structure of the PHEA/silica hybrids strongly depends on the ratio of both components in the system. For silica weight fractions lower than 0.15, the system consists of aggregated silica particles dispersed in the organic matrix; above that concentration of silica the structure is co-continuous with that of the organic matrix, similarly to two interpenetrated networks.
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U2 - 10.1016/j.eurpolymj.2007.04.021
DO - 10.1016/j.eurpolymj.2007.04.021
M3 - Article
AN - SCOPUS:34347344941
SN - 0014-3057
VL - 43
SP - 2775
EP - 2783
JO - European Polymer Journal
JF - European Polymer Journal
IS - 7
ER -