STUDY ON THE MORPHOLOGY OF POLYVINYL CHLORIDE/POLYSTYRENE BLENDS BY ELECTRON MICROPROBE ANALYSIS* |
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Authors: | Zheng-ping Fang Gen-lin Wang Guo-ping Cai Cheng-wei Xu Jie Qian |
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Institution: | Institute of Polymer Composites; Zhejiang University; Hangzhou 310027; China College of Chemical Engineering; Zhejiang University of Technology; Hangzhou 310014; China |
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Abstract: | The morphology of polyvinyl chloride/polystyrene (PVC/PS) blend samples with different mass ratios, preparedby means of solution casting and melt mixing, have been successfully examined by electron microprobe analysis (EMP). Thisexperiment was performed in a scanning electron microscope attached to an energy dispersive X-ray analyzer. Differentialscanning calorimetry was also used to investigate the phase separation of the blends. The results show that PVC and PS areincompatible and the blends have sea-islands phase structures. Blends prepared via melt mixing have finer phase-dispersionthan those prepared via solution casting. |
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Keywords: | Electron microprobe analysis Polyvinyl chloride/polystyrene blends Morphology |
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