Artículos de revistas
Modification of a Brazilian smectite clay with different quaternary ammonium salts
Fecha
2010Registro en:
Química Nova, v.33, n.2, p.309-315, 2010
0100-4042
10.1590/S0100-40422010000200015
Autor
DELBEM, Maria Flávia
VALERA, Ticiane S.
VALENZUELA-DIAZ, Francisco R.
DEMARQUETTE, Nicole R.
Institución
Resumen
In this work, a smectite clay from the State of Paraiba, Brazil, was treated with six different types of ammonium salts, which is an usual method to enhance the affinity between the clay and polymer for the preparation of nanocomposites. The clays, before and after modification, were characterized by X ray diffraction. The conformation of the salts within the platelets of the clay depended on the number of long alkyl chains of the salt. The thermal stability of the clays was also studied. The ammonium salts thermal decomposition was explained in light of their position within the organoclays.