季铵盐单体在蒙脱土中的插层原位聚合反应

In situ Polymerization of Ammonium Ion Monomers Intercalated in the Montmorillonite Template

通过四种结构相似的可聚合季铵盐(二甲基二烯丙基氯化铵、三甲基烯丙基氯化铵、丙烯酰氧乙基三甲基氯化铵、甲基丙烯酰氧乙基三甲基氯化铵),通过蒙脱土层间构型排布的模拟及分析比较,从分子水平上探讨了原位插层聚合反应中,单体分子排列角度及构型对聚合反应的影响.

The protonated forms of four ammonium salts（ dimethyl diallyl ammonium chloride, DMDAAC ; trimethylallyl ammonium chloride, TMAAC; acryloxyethyl trimethylammonium chloride, DAC; 2-methyl acrylo- xyethyltrimethylammonium chloride, DMC） were introduced into the interlayer region of montmorillonite template through ion-exchange reaction. X-ray diffractometry and FTIR spectra displayed that all the four monomers were intercalated into the layer region successfully, but only two monomers undertook in situ polymerization. The different reaction activities of the four monomers were attributed to the different space arrangement and steric hindrance of the monomers in the interlayer of montmonrillonite template.