PS/HDPE共混薄膜体系的相态结构分析  

The Phase Structure Analysis in PS/HDPE Blending Film

作　　者：陈韶云 刘奔 张行颖 陈芳 石红 胡成龙 CHEN Shaoyun;LIU Ben;ZHANG Xingying;CHEN Fang;SHI Hong;HU Chenglong(Key Laboratory of Optoelectronic Chemical Materials and Devices, Ministry of Education,School of Chemical and Environmental Engineering, Jianghan University,Wuhan, Hubei 430056,China)

机构地区：[1]江汉大学化学与环境工程学院光电化学材料与器件教育部重点实验室

出　　处：《塑料》2019年第2期49-53,共5页Plastics

基　　金：国家自然科学基金(21706092);湖北省自然科学基金(2018CFB520)

摘　　要：利用共焦显微拉曼深度扫描仪和拉曼Mapping成像技术研究了不同比例PS/HDPE及其以SEBS作为增容剂共混体系的相态结构。当体系未加增容剂时,PS和HDPE发生严重的相分离,相态结构分布不均,相界面清晰。加入增容剂之后,共混体系中分散相以不规整的形状被包裹在连续相里面,两相界面变得较为模糊.这是因为增溶剂能与PS和HDPE都能发生相互作用,从而导致不相容的两相分子在相界面出的渗透能力和分子的扩散能力增强。因此,共混体系的相界面变大,体系的相容性增强。Morphology in polystyrene (PS)/high-density poly (ethylene)( PS/HDPE) with SEBS had been analyzed by the depth scanning of confocal and Raman microscopy and Raman Mapping. The incompatible film showed heterogeneous distribution with phase separation behavior. However, the viscosity status and dispersibility between PS and HDPE could be substantially improved by introducing SEBS to the blend system. The compatibilizer connected with PS and HDPE chians, resulting in the permeability and diffusion of two phases molecular enhancement in the interface. Therefore, the phase interface and compatibility of blending system could be enhanced by introducing the compatibilizer.

关 键 词：聚苯乙烯 高密度聚乙烯 增容剂 相态结构 共焦显微拉曼光谱 

分 类 号：TQ325[化学工程—合成树脂塑料工业] TB332[一般工业技术—材料科学与工程]