2014•China Powder Science and TechnologyRequires access

Preparation, Characterization and Mechanism of Cationic-Nonionic Montmorillonites

Yin Qixu

Abstract

C a-montomrillonite was intercalation modified with cationic surfactant hexadecyl trimethyl ammonium bromide(CTAB) and nonionic surfactant alkylphenol ethoxylates(OP-10) in aqueous suspension. The performances of Ca-montomrillonite-CTAB-OP-10 samples were characterized by XRD, FTIR, SEM and TG. The mechanism of modification was discussed. The results show that CTAB and OP-10 can successfully intercalate into Ca-montomrillonite. The expansion degree of layer and modified effect of organic montmorillonite are better than those of Ca-montomrillonite-CTAB, and Ca-montomrillonite-CTAB-OP-10 samples exhibit better thermal stability. The order of adding surfactant has no effect on modification of Ca-montomrillonite.

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Key concepts: Cationic polymerization, Pulmonary surfactant, Intercalation (chemistry), Ammonium bromide, Fourier transform infrared spectroscopy, Thermal stability, Montmorillonite, Aqueous solution