不同分子质量聚乙二醇在蒙脱石层间的吸附作用  

ADSORPTION OF PEG DIFFERING IN MOLECULAR WEIGHT ON THE SURFACE OF MONTMORILLONITE INTERLAYER

作　　者：卢其明[1] 孙克君[2] 廖宗文[2] 

机构地区：[1]华南农业大学理学院,广东广州510642 [2]华南农业大学资源环境学院,广东广州510642

出　　处：《矿物学报》2004年第4期355-358,共4页Acta Mineralogica Sinica

基　　金：广东省自然科学基金资助项目(021014);广东省科技计划重点项目(A20505)

摘　　要：用蒙脱石(Mont)吸附水溶液中不同分子质量的聚乙二醇(PEG),制备PEG/Mont复合物,采用XRD、FTIR和DTA/TG表征PEG/Mont复合物的结构。结果表明:PEG通过置换部分层间水合离子进入蒙脱石层间通道内;PEG以单层或双层平卧于蒙脱石层间;大分子质量的PEG容易形成双层复合物,但双层复合物的热稳定性较差。Polyethylene glycol (PEG)/montmorillonite (Mont) composites were prepared by treating montmorillonite with water solution differing in molecular weight PEG. The PEG/Mont composites were characterized by XRD, FTIR and DTA/TG. The results showed that PEG entered the lamellae by replacing part of the interlayer hydrated ions; there are 1 or 2 layers of PEG on flatly lying between the montmorillonite plates; the bilayer composites were formed easily in the solution of PEG with a high molecular weight, but they show a lower thermal stability.

关 键 词：PEG 蒙脱石 吸附作用 插层复合物 

分 类 号：TB383[一般工业技术—材料科学与工程] TQ326.4[化学工程—合成树脂塑料工业]