| 聚乙烯醇对聚丙烯等温结晶行为的影响 |
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| 引用本文： | 李秀云,杨莉,马寒冰,刘德春,胡亚敏.聚乙烯醇对聚丙烯等温结晶行为的影响[J].四川建材学院学报,2011(3):5-8. |
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| 作者姓名： | 李秀云 杨莉 马寒冰 刘德春 胡亚敏 |
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| 作者单位： | 西南科技大学四川省非金属复合与功能材料重点实验室,四川绵阳621010 |
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| 基金项目： | 国家自然科学基金（20774076）;西南科技大学青年预研基金（09zx3104）. |
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| 摘 要： | 利用差示扫描量热仪（DSC）研究了聚乙烯醇（PEG）的加入对聚丙烯（PP）结晶速度的影响，并用Avrami方程分析了聚丙烯在PP／PEG共混物中的结晶动力学。结果表明，当PEG的含量较低时能增加PP的结晶速度，PEG的含量增加，PP的结晶速度有降低的趋势。等温结晶动力学参数表明，PEG的加入对PP起着异相成核作用，但同时又有溶剂化的作用，使其对PP的结晶速度的影响比较复杂。PEG加入使共混物对结晶温度的敏感性降低。
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| 关 键 词： | 聚丙烯聚乙烯醇结晶动力学 |
Effect of Poly （ ethylene glycol） on Isothermal Crystallization Kinetics of Isotatic Polypropylene |
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| Authors: | LI Xiu-yun YANG Li MA Han-bing LIU De-ehun HU Ya-min |
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| Affiliation: | (State Key Laboratory Cultivation Base for Nonmetal Composites and Functional Materials, Southwest University of Science and Technology, Mianyang 621010, Sichuan , China) |
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| Abstract: | In this study, the effect of PEG on using differential scanning calorimetry （DSC）. the isothermal crystallization speed of PP was investigated The isothermal crystallization kinetics of PP in PP/PEG blends was analyzed by the Avrami equation. The results indicate that PEG has the heterogeneous nuclea- tion effect on PP, the crystallization speed of PP in the blends is quicken with the addition of PEG, but decelerate with the increase of PEG content. The Arvami exponent increased along with the adding of PEG indicated that it has changed the nucleating and growing mechanism of PP. The addition of PEG makes less sensitive to the crystallization temnerature of the blends. |
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| Keywords: | Polypropyle Poly（ ethylene glycol） Crystallization kinetics |
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