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SYNCHROTRON INVESTIGATION ON MESOMORPHIC STRUCTURE OF sPP AND POLY(ETHYLENE-CO-OCTENE) IN THEIR INITIAL CRYSTALLIZATION STAGE

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【作者】蒋世春；

【Author】 Rong Cheng,Hui-ying Wen,Hong-fei Li,Shi-chun Jiang~(**) and Li-jia An State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry, Chinese Academy of Sciences,Changchun 130022,China Zhong-hua Wu Beijing Synchrotron Radiation Laboratory,Institute of High Energy Physics, Chinese Academy of Sciences,Beijing 100039,China

【机构】 State Key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences；

【摘要】 <正>Using synchrotron SAXS and WAXS,we investigated crystalline structures including crystallite size,lamellar thickness,long spacing of syndiotactic polypropylene(sPP) and poly(ethylene-co-octene)(PEcO) that crystallized from the sheared melt.The independence of the shear effects on the crystalline structures and the shear related lamellar orientation indicate the stable mesophase.Experiments on the different shear effects on polymer various crystalline structures confirm the multi-step polymer crystallization process.更多还原

【Abstract】 Using synchrotron SAXS and WAXS,we investigated crystalline structures including crystallite size,lamellar thickness,long spacing of syndiotactic polypropylene(sPP) and poly(ethylene-co-octene)(PEcO) that crystallized from the sheared melt.The independence of the shear effects on the crystalline structures and the shear related lamellar orientation indicate the stable mesophase.Experiments on the different shear effects on polymer various crystalline structures confirm the multi-step polymer crystallization process.更多还原

【关键词】 Polymer crystalline structures； Shear effects； Mesophase；
【Key words】 Polymer crystalline structures； Shear effects； Mesophase；

【基金】 supported by he National Natural Science Foundation of China(Nos.20574069,50773082, 20974077,20620120105);the Fund for Creative Research Groups(No.50621302);Synchrotron experiments at Beam line A2 were supported by HASYLAB project(Ⅱ20070004).

【文献出处】 Chinese Journal of Polymer Science ,高分子科学(英文版) , 编辑部邮箱 ,2010年05期

【分类号】O631
【下载频次】48

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