Application of Successive Self-nucleation and Annealing to Study the Stereo-defects Distribution of Biaxially Oriented Polypropylene  

作　　者：He-fei Chang 李化毅 Tao Zheng Qian Zhou 张辽云 You-liang Hu 

机构地区：[1]College of Chemistry and Chemical Engineering,University of Chinese Academy of Sciences [2]Performance Materials R&D Center,National Institute of Clean-and-Low-Carbon Energy [3]Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Engineering Plastics,Institute of Chemistry,Chinese Academy of Sciences

出　　处：《Chinese Journal of Polymer Science》2014年第3期362-370,共9页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China(No.51073170)

摘　　要：The stereo-defects distribution of polypropylene of the two industry biaxially oriented polypropylene （BOPP） samples T28FE and F28SO with different processing properties was studied through successive self-nucleation and annealing （SSA） technique. It was found that there were more medium isotactic components in sample F28SO, and the isotactic sequence length of polypropylene of sample F28SO was shorter and the isotactic sequence length distribution of polypropylene of sample F28SO was broader, which could be processed well at high-speed orientation during the processing of BOPP films. This result indicates that the isotactic sequence length distribution of polypropylene is related to the processing speed during preparing BOPP films, and the stereo-defects distribution of polypropylene has an important influence on its processing ability.The stereo-defects distribution of polypropylene of the two industry biaxially oriented polypropylene （BOPP） samples T28FE and F28SO with different processing properties was studied through successive self-nucleation and annealing （SSA） technique. It was found that there were more medium isotactic components in sample F28SO, and the isotactic sequence length of polypropylene of sample F28SO was shorter and the isotactic sequence length distribution of polypropylene of sample F28SO was broader, which could be processed well at high-speed orientation during the processing of BOPP films. This result indicates that the isotactic sequence length distribution of polypropylene is related to the processing speed during preparing BOPP films, and the stereo-defects distribution of polypropylene has an important influence on its processing ability.

关 键 词：BOPP Lamellar thickness Isotactic sequence length Successive self-nucleation and annealing. 

分 类 号：TQ325.14[化学工程—合成树脂塑料工业] TU452[建筑科学—岩土工程]