PREPARATION OF ORGANOCLAY BASED ON THUAN HAI (VIET NAM) CLAY MODIFIED BY GLYCERIDE MIXTURE

Abstract

In this study, in order to have a new organo-clay, we have used a non-ionic surfactant (glyceride mixture) to modify Thuan Hai clay(Viet Nam). Mono and di- glyceride mixture has been synthesized from linseed oil by trans-esterification reaction using the catalytic of base. By the analysis of thin chromatography method, the synthesized sample includes the majority monoglyceride. Before the modification process, Thuan Hai clay has been pretreated by the purification method to remove the impurity of quartz (SiO2), and the X-ray diffraction (XRD) has shown that purified Thuan Hai clay has a d-spacing d001~ 10Ǻ . And after the modification of clay, it was found that the interlayer distance of modified clay using ethanol as the solvent is about 15-16Ǻ , while that modified clay using non – solvent method is better and has the interlayer distance about 18-20 Ǻ .