文献类型：期刊文献

中文题名：钠基蒙脱土的有机改性及其表征

英文题名：Organic modification and characterization of Na-montmorillonite

作者：张林[1] 陈介南[1] 刘进[1] 胡进波[1] 于文吉[2]

第一作者：张林

通信作者：Chen, J.

机构：[1]中南林业科技大学生物环境科学与技术研究所;[2]中国林业科学研究院木材工业研究所

年份：2009

期号：5

起止页码：93-99

中文期刊名：复合材料学报

外文期刊名：Acta Materiae Compositae Sinica

收录：CSTPCD;;EI(收录号：20094612457222);Scopus(收录号：2-s2.0-70449094380);北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家"十一五"科技支撑计划(2006BAD07A07-08)

语种：中文

中文关键词：蒙脱土;有机蒙脱土;有机阳离子;插层

外文关键词：montmorillonite; organic montmorillonite; organic cation; intercalation;

分类号：TB332

摘要：为了改善蒙脱土的层间结构,采用十六烷基三甲基溴化铵(CTAB)与十八烷基三甲基氯化铵(OTAC)对钠基蒙脱土进行有机插层改性,并且考察了有机阳离子种类、反应温度、pH值及有机阳离子加入量对插层效果的影响。使用X射线衍射仪(XRD)、傅里叶变换红外光谱仪(FTIR)、热重分析(TGA)、扫描电镜(SEM)与透射电镜(TEM)对样品进行了系统的分析。结果表明,OTAC插层效果比CTAB好,适宜的改性温度为80℃,在一定的范围内,pH的减小有利于插层,有机阳离子加入量为2倍于阳离子交换容量(CEC)时插层效果最理想。在此条件下,成功制备了有序高层间距纳米有机蒙脱土,晶面间距达到4.12 nm,甚至有部分片层剥离。
In order to improve the layer structure of montmorillonite,cetyltrimethyl ammonium bromide（CTAB）and octedacy trimethyl ammonium chloride（OTAC）were used as organic intercalating cations to modify sodium montmorillonite.The effects of modification by the type and amount of organic cation added,reaction temperature,and pH were investigated,and the samples were systemically characterized with XRD,FTIR,TGA,SEM and TEM.The results showed that OTAC had a better intercalating effect than CTAB.It was found that a reaction temperature of 80℃ and low pH favored intercalation,and the best intercalating effect was observed when the amount of organic cation added was twice the cation exchange capacity（CEC）.Under the above reaction conditions,ordered and high layer spacing organic nano-montmorillonite was successfully obtained,with a basal spacing of 4.12 nm and even exfoliated parts of silicate layer.