高等学校化学学报

高等学校化学学报 ›› 2003, Vol. 24 ›› Issue (5): 928.

• 论文 • 上一篇    下一篇

氯硅烷改性蒙脱土的制备与性能

赵春贵1,2, 阳明书1, 冯猛1,2   

  1. 1. 中国科学院化学研究所分子科学中心, 工程塑料国家重点实验室, 北京 100080;
    2. 中国科学院研究生院, 北京 100039
  • 收稿日期:2002-03-15 出版日期:2003-05-24 发布日期:2003-05-24
  • 通讯作者: 阳明书(1968年出生),男,博士,副研究员,主要从事高分子材料研究.E-mail:yms@sklep.icas,ac.cn. E-mail:yms@sklep.icas,ac.cn.

Preparation and Properties of Chiorosilane-modified Montmorillonites

ZHAO Chun-Gui1,2, YANG Ming-Shu1, FENG Meng1,2   

  1. 1. State Key Laboratory of Engineering Plastics, Center for Molecular Science, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, Chinas;
    2. Graduate School, Chinese Academy of Sciences, Beijing 100039, China
  • Received:2002-03-15 Online:2003-05-24 Published:2003-05-24

PDF (PC)

被引次数

114

摘要： 基于氯硅烷与羟基的反应性,用氯硅烷对蒙脱土进行化学改性,FTIR证实硅烷已接枝到了蒙脱土上,WAXD表明,在极性分散剂中,硅烷成功地插层到了蒙脱土的片层间;而在非极性分散剂中,硅烷插层到蒙脱土片层间的量少,测定了蒙脱土阳离子交换容量(CEC),改性后其CEC值大幅度降低,分散性实验表明,由于改性后的蒙脱土颗粒以及片层间的相互作用力得到极大降低,其在水中和甲苯中的分散性更好.

关键词: 蒙脱土, 氯硅烷, 改性, 分散性

Abstract: Montmorillonite(MMT) was modified by chlorosilane derivatives (trimethylchlorosilane and tert-butyldimethylchlorosilane) based on the reaction between OHgroup and chlorosilane. FTIR confirmed that chlorosilane derivatives had reacted with the OHgroups of MMT, and the results of wide angle X-ray diffraction (WAXD) indicated that there was an intercalation taking place during the reaction. The CEC of montmorillonites were detected, after the modification by chlorosilane derivatives, CEC values drastically decreased. The dispersibility measurements of montmorillonites were conducted, the results declared that the dispersibility of modified montmorillonites both in H2Oand toluene were improved due to the decrease of attractions between particles and layers.

Key words: Montmorillonite, Chlorosilane, Modification, Dispersibility

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