| 聚合物长支链的流变学表征方法 |
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| 引用本文： | 娄立娟,刘建叶,俞炜,周持兴.聚合物长支链的流变学表征方法[J].高分子通报,2009(10). |
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| 作者姓名： | 娄立娟 刘建叶 俞炜 周持兴 |
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| 作者单位： | 流变学研究所,上海交通大学化学化工学院,上海,200240 |
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| 基金项目： | 国家自然科学基金项目(20674051,50390095) |
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| 摘 要： | 在聚合物中引入长支链能够显著地提高熔体强度,改善聚合物在拉伸流场中的加工性能,因此对长支链的表征显得十分重要。流变学被证实是一种非常有效且敏感的表征手段,近来受到普遍关注。本文总结了近年来国内外关于长支链聚合物流变学表征研究的最新进展,比较了不同类型流场下对长支链的流变学判断方法,尽量结合高分子链段分子结构解释了各种表征现象的含义,阐述了借助流变学对大分子拓扑结构的定性表征以及对长支链含量的定量表征方面的应用。
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| 关 键 词： | 长支链 流变学 剪切流场 拉伸流场 |
Rheological Characterization of Long Chain Branching |
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| LOU Li-juan,LIU Jian-ye,YU Wei,ZHOU Chi-xing.Rheological Characterization of Long Chain Branching[J].Polymer Bulletin,2009(10). |
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| Authors: | LOU Li-juan LIU Jian-ye YU Wei ZHOU Chi-xing |
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| Institution: | Advanced Rheology Institute and Department of Polymer Science and Engineering;Shanghai Jiao Tong University;Shanghai 200240;China |
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| Abstract: | The melt strength and processability of polymer can be significantly improved by introducing long chain branching.Therefore,characterization of long chain branching turns to be essential,for which rheology is widely used as a very effective method.In this work,recent development of studies on rheological characterization of long chain branching polymers is reviewed.We also summarized and compared the characterization methods under different types of flow,and tried to reveal the relationship between the info... |
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| Keywords: | Long chain branching Rheology Shear flow Elongational flow |
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