Preparation, thermal stability and decomposition routes of clay/Triton-X100 composites

摘要: The adsorption isotherms for the octylphenol ethoxylate, TX100, onto a range of bentonites and saponite have been determined resulting thermal stability composites has studied. In general TX100 exhibited high affinity different clay surfaces although maximum amount adsorbed varied with both type, layer charge density resident exchange cation. XRD variable temperature showed that was into interlamellar region, clay/TX100 composite dependent upon exchangeable cation present. For monovalent exchanged clays (M+-clay/TX100) decomposed between 220 300 °C, d001 spacing decreased from 15.2 to 9.6 A. contrast, divalent imparted greater complex (M2+-clay/TX100) owing coordination cation, wherein weakly coordinated stable 270 °C strongly held temperatures in excess 300 °C. FTIR analysis gases evolved during thermogravimetry confirmed unit desorbed M2+-clay at below 400 °C portions ethoxylate chain were 500 °C.