α-环糊精与聚己二酸乙二醇酯的包合物对聚己二酸乙二醇酯结晶性能的影响

摘要

制备了聚己二酸乙二醇酯（PEA）与α-环糊精（α-CD）的包合物（PEAIC）,用红外光谱、核磁共振氢谱和X射线衍射对产物的结构进行了表征,并用差示扫描量热仪和偏光显微镜研究了PEAIC对PEA结晶的影响。结果表明：PEA可以和α-CD发生非共价键作用,形成隧道状晶体结构;同时PEAIC的加入,提高了PEA的结晶温度,加快了其结晶速率,减小了其结晶尺寸。%The inclusion complex of poly（ethylene adipate）（PEA） and α-cyclodextrin（α-CD） was prepared and characterized with Fourier transformation infrared spectrometry（FT-IR）,proton nuclear magnetic resonance spectra（1H-NMR） and X-ray diffractometry（XRD）.The nucleation effect of this complex on PEA was investigated by differential scanning calorimetry（DSC） and polarized optical microscopy（POM）.Results show that PEA interacts with α-CD through non-covalent interactions and forms a channel crystal structure.Moreover,with addition of the PEAIC,PEA exhibits higher crystallization temperature,faster crystallization rate,and smaller spherulites.