| 聚己内酯的非等温结晶动力学的研究 |
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| 引用本文： | 崔广军,王扬,李海东. 聚己内酯的非等温结晶动力学的研究[J]. 中国塑料, 2008, 0(11) |
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| 作者姓名： | 崔广军 王扬 李海东 |
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| 作者单位： | 长春工业大学化学工程学院;长春应用化学研究所高分子物理与化学国家重点实验室; |
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| 摘 要： | 采用示差扫描量热仪和 X 射线衍射仪研究了聚己内酯(PCL)的非等温结晶行为,并采用 Ozawa 方程、Jeziorny 方程分析了 PCL 的非等温结晶动力学。结果表明,在 PCL 结晶初期,Avrami 指数 n≈4,从而表明了 PCL 以均相成核的三维球晶方式生长,同时发现在 PCL 的结晶后期即相对结晶度为98%时存在缓慢的次级结晶,表明次级结晶的出现是过冷度影响的结果。
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| 关 键 词： | 聚己内酯 非等温结晶动力学 次级结晶 Ozawa 方程 Jeziomy 方程 |
Nonisothermal Crystallization Behavior of Poly(s-caprolatone) |
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| CUI Guang-jun WANG Yang LI Hai-dong. Nonisothermal Crystallization Behavior of Poly(s-caprolatone)[J]. China Plastics, 2008, 0(11) |
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| Authors: | CUI Guang-jun WANG Yang LI Hai-dong |
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| Affiliation: | 1;2;1.Chemical Engineering Department;Changchun University of Technology;Changchun 130012;China;2.State Key Laboratory of Polymer Physics and Chemisry;Changchun Institute of Applied Chemistry;Chinese Academy of Sciences;Changchun 130022;China |
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| Abstract: | The nonisothermal crystallization behavior of poly(e-caprolactone) was studied by DSC and XRD,the crystallization kinetics was analyzed using Ozawa and Jeziorny equations.The obtained Avrami index n is about 4,which demonstrates a three-dimensional spherulite growth on homogengous nuclei. Secondary crystallization process was observed when the relative crystallinity was 98%,which was affected by the degree of supercooling. |
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