复合改性水滑石的制备与表征  

Preparation and Characterization of Composite Modified Hydrotalcite

作　　者：杨文梅[1] 邬素华[1] 张建超[1] 郭晓静[1] 

机构地区：[1]天津科技大学材料科学与化学工程学院,天津300457

出　　处：《塑料》2015年第3期7-9,55,共4页Plastics

摘　　要：采用十二烷基硫酸钠(SDS)和γ-甲基丙烯酰氧基丙基三甲氧基硅烷(KH570)对镁铝水滑石进行有机改性,得到插层改性和表面改性结合的复合改性水滑石。XRD、FTIR的分析结果表明:SDS已垂直插入水滑石层间,层间距达到2.72 nm,KH570只覆盖在水滑石表面,与层板表面羟基进行偶联。通过控制离子交换反应条件,有机阴离子可以插入水滑石层间完全取代CO2-3,反应生成的柱撑水滑石具有完整的层状结构。Composite modified hydrotalcite was prepared by modifying the layered double hydroxides （LDHs） organically with sodium dodecylsulfate （SDS） and 3,-methacryloxypropyl- trimethoxysilane （KH-570）. The results from the XRD and FTIR showed that SDS intercalated into the layers of LDHs perpendicularly with a spacing of 2.72 nm, KH570 covered the surface of LDHs condensing with the hydroxyl groups on the hydrotalcite surface. The results indicated that through control the condition of ion exchange reaction, the organic anion could intercalated into the layer of hydrotalcite substitute the CO32-completely, and the pillared hydrotalcite had a complete lamellar structure.

关 键 词：水滑石 硅烷偶联剂 有机阴离子 复合改性 柱撑水滑石 

分 类 号：TQ129[化学工程—无机化工]