聚ε-己内酯结晶形态的研究  

Study on Crystalline morphology of Poly(ε-caprolactone)

作　　者：李海东[1] 张永利 程凤梅[1] 

机构地区：[1]长春工业大学化学工程学院,长春130012 [2]中国兵器工业第203研究所,西安710065

出　　处：《高分子通报》2012年第7期97-103,共7页Polymer Bulletin

基　　金：国家自然科学基金(21071142)资助

摘　　要：采用DSC测试了聚ε-己内酯(PCL)的结晶温度(TC)和熔融温度(Tm)。同时采用偏光显微镜(POM)探讨了结晶时间的影响,发现结晶时间的改变只能够改变其晶体的尺寸,对其结晶形态并没有太大的影响。最后采用原子力显微镜(AFM)讨论了基底材料、溶剂和过冷度对PCL结晶形态的影响。结果表明:基底材料对PCL结晶形态的影响是比较显著的,PCL在硅片上呈棒状,在云母和涂有碳膜的云母上呈树枝状。溶剂对PCL结晶形态的影响明显,其结晶形态的差别与蒸汽压有关。在不同的温度下PCL结晶形态都成树枝状晶体,且分枝宽度随着过冷度的降低而增加。We measure the crystalline temperature and melt temperature of PCL by DSC. then , the effect of crystallization time was studied by Polarized Optical Microscope （POM）, we find that： the change of crystallization time only change dimension of crystal, it did not influence the crystalline morphology. At last, Crystalline morphology of Poly（e-caprolactone） was studied by AFM. At this paper , we mainly discussed the effect of substrate material, solvent and super cooling on crystalline morphology. It was found that .（1） the effect of substrate material on crystalline morphology is prominence,crystalline morphology on the silicon present club-structure, while on mica and on mica coated Carbon film on surface is dendrite structure. （2） the effect of solvent on crystalline morphology is prominence, it mainly depended on the vapor pressure. （3） the dendrites structure could be found at different temperatures, the width of dendrites increase with decreasing super cooling.

关 键 词：聚Ε-己内酯 结晶 环带球晶 结晶形态 

分 类 号：O633.14[理学—高分子化学]