INVESTIGADORES
MANFREDI liliana Beatriz
artículos
Título:
Influence of the Clay Modification on the Properties of Resol Nanocomposites
Autor/es:
L. B. MANFREDI; D.PUGLIA; A. TOMASUCCI; J.M.KENNY; A. VÁZQUEZ
Revista:
MACROMOLECULAR MATERIALS AND ENGINEERING (PRINT)
Editorial:
Wiley
Referencias:
Lugar: NJ; Año: 2008 vol. 293 p. 878 - 886
ISSN:
1438-7492
Resumen:
Two organically modified (Cloisite® 30B and 10A) and unmodified clay (Cloisite® Na) were added to a resol type phenolic prepolymer and their rheological behaviour was analysed. The modified montmorillonites showed a better dispersion in the prepolymer. The dispersion of the clay, the chemical structure as well as the thermal degradation behaviour of the cured polymer and nanocomposites was studied. It was observed that the addition of Cloisite® Na leads to a higher crosslinked structure of the cured polymer needing higher activation energy for their thermal degradation. The resol with Cloisite® 10A contained higher percentage of voids and it seems to be one of the main factors that lead to a lesser hardness and adhesive strength when the nanocomposite was applied to a metal substrate.
