【作者】 张雪勤； 尹唯斯； 杨琥； 王治流； 程镕时；

【Author】 ZHANG Xueqin YIN Weisi YANG Hu WANG Zhiliu1 CHENG Rongshi (Key Laboratory for Mesoscopic Chemistry of Ministry of Education, College of Chem. & Chem. Eng., Nanjing University, Nanjing 210093College of Material Science and Engineering, Polymer Institute, South China University of Technology, Guangzhou 510640)

【机构】 南京大学化学化工学院介观化学教育部重点实验室；

【摘要】 <正> 本文利用偏光显微镜全程摄像跟踪观察了聚环氧乙烷(PEO)球晶的生长历程,发现了两种围绕球晶中心的环形结构,一种是比较宽的彩色衍射圆环(如图1),我们称之为环纹;另一种圆环比较窄(如图2),我们称之为环线,并对其起源进行了初步的探索。在实验中发现当样品膜厚度较薄时(大约4μm左右)可以很清晰的观察到球晶径向上有许多同心衍射环形纹,这种环纹在去偏光及不同波长补偿片下依然存在,而且更加明显。更有趣的是,通过对PEO球晶生长的全程跟踪观察,发现这种同心衍射环形纹并不是一开始就更多还原

【Abstract】 A synchronization observation was carried out to investigate the growth of PEO spherulites by using a polarizing optical microscope in order to learn the phenomenon of concentric banded stripes and rings occurred during the growth of PEO spherulites. The banded stripes and the concentric rings were both tried to observe at different conditions between cross-polarizes or without polarize. It was found that the appearance of the two patterns followed the similar crystal condition, which was assumed to be related to the change of the internal structure of PEO -spherulites.更多还原