Synthesis and characterization of resol‐layered silicate nanocomposites |
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| Authors: | M. López M. Blanco J. A. Ramos A. Vazquez N. Gabilondo J. J. del Val J. M. Echeverría I. Mondragon |
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| Affiliation: | 1. Materials and Technologies' Group, Escuela Politécnica, Department of Chemical and Environmental Engineering, Universidad País Vasco/Euskal Herriko Unibertsitatea. Pza. Europa 1, 20018 Donostia‐San Sebastián, Spain;2. Departamento de Física de Materiales, Univ. País Vasco, Apdo. 1072, 20080 Donostia‐San Sebastián, Spain;3. Hexion Specialty Chemicals Ibérica Ctra. Navarra, Epele 39, E‐20120 Hernani (Gipuzkoa) Spain |
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| Abstract: | Resol‐layered silicate nanocomposites were synthesized by intercalative polymerization of phenol and formaldehyde using layered clays such as an aminoacid‐modified montmorillonite (MMT) and a commercial modified MMT (Cloisite 30B). The composites were prepared by a sequential process in which one of the reactives of the phenolic resin was reacted with the organosilicate and subsequently cured with triethylamine. The nanocomposites were studied by means of X‐ray diffraction, atomic force microscopy, and thermogravimetric analysis. Results show a strong clay composition dependence on the intercalation state. The composite of resol with 2 wt % aminoacid‐modified MMT content has the best dispersion of clay layers. Thermal stability of nanocomposites was slightly increased in comparison with the neat resol. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 2007 |
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| Keywords: | resols nanocomposites montmorillonite |
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