关键词: 新疆蛭石, 水黑云母, 季铵盐, 有机改性, 层间结构

Abstract:

In order to investigate the reaction mechanism of organic pillared hydrobiotite,a hydrobiotite from Weili.Xinjiang,that is,a vermiculite-phlogopite interstratified mineral.was modified by cationic surfactants of quaternary ammonium with different alkyl chain length.The complexes were then tested by X-ray diffraction and infrared spec-trum.The effects of the crystallization degree,the uniformity of charge distribution.the surrounding hydration cat-ion and the pillaring mode of organic molecule on the interlamellar space of hydrobiotite were finallv discussed.The results show that the quaternary ammonium cations(C₁₂TA⁺ ,C₁₄TA⁺)with short alkyl chain only react with the hydration cation in the interlamerllar space of hydrobiotite,while those with long chain(C₁₆TA⁺ ,C₁₈ TA⁺ )first react with the hydration cation,then with the kalium cation in phlogopite interlayer.

Key words: Xinjiang vermiculite, hydrobiotite, quaternary ammonium, organic modification, interlamellar structure