Three-dimensional observation of the phase structure of high density polyethylene (HDPE)/poly(ethylene-co-butene) (PEB) blend by laser scanning confocal microscopy  

作　　者：ZHANG ChengGui DONG Xia WANG DuJin HAN Charles C 

机构地区：[1]Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, Joint Laboratory of Polymer Science and Materials, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100080, China [2]School of Material and Chemical Engineering, Zhengzhou University of Light Industry, Zhengzhou 450002, China [3]Graduate University of Chinese Academy of Sciences, Beijing 100080, China

出　　处：《Chinese Science Bulletin》2007年第15期2042-2047,共6页

基　　金：the National Natural Science Foundation of China (Grant Nos. 20574081 and 20490220);973 Program of MOST of China (Grant No. 2003CB 615600)

摘　　要：In this paper,high density polyethylene (HDPE)/poly(ethylene-co-butene) (PEB) blend (50/50 wt%) was prepared through solution blending and then compression molding,and subsequently examined by laser scanning confocal microscopy (LSCM). The PEB used in this experiment was labeled with a small quantity of a fluorescein derivative to render fluorescence. The initial films showed uniform dye dis-tribution and no indication of phase separation within the resolution of optical microscopy. Sample films annealing at 140℃ followed by rapid cooling to room temperature showed obvious phase sepa-ration and bicontinuous structure. The present work indicates that by labeling one component with fluorescein derivative,LSCM can efficiently perform in situ depth profiling of polymer blends.In this paper, high density polyethylene （HDPE）/poly（ethylene-co-butene） （PEB） blend （50/50 wt%） was prepared through solution blending and then compression molding, and subsequently examined by laser scanning confocal microscopy （LSCM）. The PEB used in this experiment was labeled with a small quantity of a fluorescein derivative to render fluorescence. The initial films showed uniform dye distribution and no indication of phase separation within the resolution of optical microscopy. Sample films annealing at 140℃ followed by rapid cooling to room temperature showed obvious phase separation and bicontinuous structure. The present work indicates that by labeling one component with fluorescein derivative, LSCM can efficiently perform in situ depth profiling of polymer blends.

关 键 词：激光扫描共焦显微镜 聚乙烯 形态学 互溶性 三维观测 

分 类 号：TH742[机械工程—光学工程]