| 相对分子质量及其分布对烯烃共聚物动态流变性能的影响 |
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| 引用本文： | 王宇,杨伟,翟元明,谢邦互,杨鸣波. 相对分子质量及其分布对烯烃共聚物动态流变性能的影响[J]. 中国塑料, 2008, 22(10): 24-27. DOI: 10.19491/j.issn.1001-9278.2008.10.005 |
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| 作者姓名： | 王宇 杨伟 翟元明 谢邦互 杨鸣波 |
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| 作者单位： | 四川大学高分子材料科学与工程学院，高分子材料工程国家重点实验室 |
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| 基金项目： | 国家自然科学基金资助项目(20734005和10590351);;四川大学“大学生创新实验计划”资助项目 |
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| 摘 要： | 通过对一系列具有不同相对分子质量和相对分子质量分布的乙烯/α-烯烃（丁烯和己烯）共聚物的动态流变行为测试，研究了相对分子质量及其分布（即多分散性）对储能模量与频率、损耗模量与频率以及储能模量与损耗模量在低频区的关系曲线斜率的影响规律。结果表明：储能模量、损耗模量与频率以及储能模量与损耗模量的关系曲线的斜率不仅均低于理想的单分散体系，而且均随着相对分子质量或相对分子质量分布的增加而降低。
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| 关 键 词： | 烯烃共聚物 相对分子质量 相对分子质量分布 动态流变性能 |
Effect of Relative Molecular Weight and Its Distribution of Olefin Copolymers on Dynamic Rheological Behavior |
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| WANG Yu YANG Wei ZHAI Yuan-ming XIE Bang-hu YANG Ming-bo. Effect of Relative Molecular Weight and Its Distribution of Olefin Copolymers on Dynamic Rheological Behavior[J]. China Plastics, 2008, 22(10): 24-27. DOI: 10.19491/j.issn.1001-9278.2008.10.005 |
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| Authors: | WANG Yu YANG Wei ZHAI Yuan-ming XIE Bang-hu YANG Ming-bo |
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| Affiliation: | State Key Laboratory of Polymer Materials Engineering, College of Polymer Science and Engineering, Sichuan University |
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| Abstract: | The effect of relative molecular weight and its distribution of ethylene-α-olefin copolymers on the relationship between storage modulus (G') or loss modulus (G") and frequency (ω) and between storage modulus and loss modulus were studied by investigating the dynamic rheological behavior of the samples with various relative molecular weight and various polydispersity. The results indicated that the slopes of the G'~ω, G"~ω, G'~G" curves not only were smaller than those of the monodisperse polymers, but also decreased with relative molecular weight or its distribution increasing. |
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| Keywords: | olefin copolymer relative molecular weight relative molecular weight distribution dynamic rheological property |
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