聚己内酯-环糊精包合物对聚己内酯结晶行为的影响  

Effect of the inclusion complex of α-cyclodextrin and polycaprolactone on crystallization behavior of polycaprolactone

作　　者：常海波[1] 郑林萍[2] 王亚琼[1] 常利敏[1] 李东风[1] 

机构地区：[1]河南大学化学化工学院,河南开封475004 [2]河南大学药学院,河南开封475004

出　　处：《化学研究》2011年第5期45-48,54,共5页Chemical Research

基　　金：河南大学博士启动基金资助项目(B2010028)

摘　　要：采用溶液共混的方法制备了α-环糊精(α-CD)和聚己内酯(PCL)的包合物PCLIC,用X射线衍射和红外光谱对其结构进行了表征,并研究了α-CD、β-CD和PCLC对PCL结晶行为的影响,结果表明线性PCL穿入α-环糊精分子内腔形成了隧道状晶体结构,而且PCLIC对PCL具有明显的异相成核作用,其成核效率比α-CD和β-CD高.The inclusion complex of polycaprolactone（PCL） andα-cyclodextrin（α-CD） was prepared by solution mixing method.The structure of this complex was characterized by means of X-ray diffractometry（XRD） and Fourier transformation infrared spectrometry（FTIR）.The nucleation effect of PCLIC,α-CD andβ-CD on PCL was investigated by differential scanning calorimetry（DSC） and polarized optical microscopy（POM）.The results indicate that PCL can interact with the hydroxyl groups inside the cavities ofα-CD through non-covalent interactions and form a channel crystal structure.Moreover,PCLIC is a very active nucleation agent for PCL.Nucleation efficiency of this complex is higher than that ofα-CD and β-CD.

关 键 词：环糊精 聚己内酯 包合物 结晶 

分 类 号：O643.38[理学—物理化学]