| 线性低密度聚乙烯在与丁苯橡胶的共混体系中的结晶行为 |
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| 引用本文： | 卢琰,秦川,景遐斌,黄葆同.线性低密度聚乙烯在与丁苯橡胶的共混体系中的结晶行为[J].应用化学,1989(6). |
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| 作者姓名： | 卢琰 秦川 景遐斌 黄葆同 |
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| 作者单位： | 中国科学院长春应用化学研究所高分子物理联合开放研究实验室
(卢琰，秦川，景遐斌)，中国科学院长春应用化学研究所高分子物理联合开放研究实验室(黄葆同) |
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| 摘 要： | 本工作采用DSC、X-射线衍射、小角激光光散射、偏光显微镜等手段,研究了线性低密度聚乙烯/丁苯橡胶共混体系中聚乙烯的结晶结构、平衡熔点和结晶动力学。
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| 关 键 词： | 聚乙烯 丁苯橡胶 共混聚合物 |
CRYSTALLINE STRUCTURE AND CRYSTALLIZATION BEHAVIOR OF LLDPE IN LLDPE/SBR BLENDS |
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| Lu Yan,Qing Chuan,Jing Xiabin,Huang Baotong Polymer Physics Laboratory,Changchun Institute of Applied Chemistry,Academia Sinica.CRYSTALLINE STRUCTURE AND CRYSTALLIZATION BEHAVIOR OF LLDPE IN LLDPE/SBR BLENDS[J].Chinese Journal of Applied Chemistry,1989(6). |
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| Authors: | Lu Yan Qing Chuan Jing Xiabin Huang Baotong Polymer Physics Laboratory Changchun Institute of Applied Chemistry Academia Sinica |
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| Abstract: | DSC, SALS, SAXS, WAXD and polarizing microscopy were used to study the crystal-line structrures, equilibrium melting point and crystallization kineties of LLDPE in LLDPE/SBR blends. Its unit cell parameters, crystallite size, spherulite size and crystallinityremain unchanged when LLDPE content is above 50%. Crystallite and spherulite size dec-rease when LLDPE content is less than 50%. The long period of LLDPE ctystallites in theblends of various compositions is larger than that of pure LLDPE and increases with increasingSBR content. This system does not show melting point depression but gives higher chainfolding free energy than pure LLDPE. Based on the above experimental observations it isconcluded that in this system LLDPE and SBR are not compatible in general, but showcertain extent of molecular chain mixing in the amorphous region of LLDPE. |
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| Keywords: | Polyethylene Styrene-butadiene rubber LLDPE/SBR blend |
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