聚氧化乙烯/蒙脱土纳米嵌入化合物的制备与结构表征

利用溶液法和熔融法制备聚氧化乙烯(PEO)/蒙脱土纳米嵌入化合物,用XRD、IR和DSC等测试手段对嵌入化合物进行了表征.嵌入的PEO分子同蒙脱土晶层中的Na⁺生成PEO-Na⁺络合物,嵌入化合物具有一定的耐溶剂萃取性,PEO分子以单层螺旋构象排列于蒙脱土的晶层中.PEO分子在蒙脱土层间运动受到限制,致使嵌入化合物的结晶熔融峰减弱.

Preparation and Characterization of Poly(ethylene oxide)/Montmorillonite Intercalation Compound

In this paper, poly(ethylene oxide)/montmorillonite intercalation compound was prepared through solution and melting intercalating. The intercalation compound was characterized by XRD, IR and DSC, etc. PEO molecule couold react with Na + to form a coordination complex and it was in a spiral conformation between montmorillonite layers, so the PEO molecule could not be extracted by the solvent. As the molecular thermal action was restricted in the montmorillonite gallery, the melting peak of the PEO crystal in intercalation compound was decreased.