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PTT/PET共混体系结晶行为和形态研究

Research on the Crystallization Behavior and Morphology of Blends of PTT/PET

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【Author】 LI Gui-juan~(1,2,3), QI Xiu-li~1, DAI Guo-xing~2, HUANG Nan-xun~1, CHEN Yan-mo~1, ZHOU En-le~3 (1. State Key Laboratory for Modification of Chemical Fiber and Polymer Materials,Donghua University,Shanghai 200051,China; 2. College of Chemical Engineering, Changchun University of Technology,Changchun 130012,China; 3. State key Laboratory of Polymer Physics and Chemistry,Changchun Institute of Applied Chemistry,Chinese Academy of Sciences,Changchun 130022,China)

【机构】东华大学纤维材料改性国家重点实验室；长春工业大学化学工程学院；中国科学院长春应用化学研究所高分子物理与化学国家重点实验室上海200051长春工业大学化学工程学院；吉林长春130012中国科学院长春应用化学研究所高分子物理与化学国家重点实验室；吉林长春130022；上海200051；吉林长春130012；吉林长春130022；

【摘要】利用差示扫描量热仪、正交偏光显微镜研究了聚对苯二甲酸丙二醇酯(PTT)、聚对苯二甲酸乙二醇酯(PET)及PTT/PET共混体系(质量比为25∶75)的结晶行为、形态和等温结晶动力学。结果表明,PTT/PET共混物中,少量的PTT部分地起到了成核作用,但在一定程度上阻碍了PET链段规则地进入晶格,影响了结晶速率。偏光显微镜观察到PET、PTT和PTT/PET共混物在120℃下1、20min的溶液滴膜有较清晰的球晶。更多还原

【Abstract】 The crystallization behavior, morphology and kinetics of isothermal crystallization of PTT, PET and their blend (mass ratio 2575) were investigated using DSC and PLM. It showed that PTT may play a role as the nucleating agent, however, it inhibited the regular folding of PET. For this reason, the crystallization rate of PET was low in presence of a small amount of PTT. While spherulites could hardly be observed in PTT, PET and their blends cooled from melts, it could be clearly seen in the samples obtained from a solution after soaking for 120 minutes at 120 .更多还原

【关键词】聚对苯二甲酸丙二醇酯；聚对苯二甲酸乙二醇酯；共混；等温结晶动力学；
【Key words】 <Keyword>poly(trimethylene terephthalate)； poly(ethylene terephthalate)； blending； kinetics of isothermal crystallization；

【基金】国家重点基础研究专项经费资助(G19999064805)

【文献出处】中国塑料 ,China Plastics , 编辑部邮箱 ,2005年05期

【分类号】TQ325
【被引频次】9
【下载频次】272

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