| 热塑性聚酰亚胺与聚醚醚酮共混物的等温结晶动力学 |
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| 引用本文： | 郭来辉,方省众,王贵宾,吴忠文. 热塑性聚酰亚胺与聚醚醚酮共混物的等温结晶动力学[J]. 高等学校化学学报, 2011, 32(12): 2908-2915 |
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| 作者姓名： | 郭来辉 方省众 王贵宾 吴忠文 |
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| 作者单位： | 1. 中国科学院宁波材料技术与工程研究所高分子事业部, 宁波 315201;2. 吉林大学化学学院, 麦克德尔米德实验室, 长春 130012 |
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| 基金项目： | 宁波市国际科技合作项目，宁波市自然基金 |
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| 摘 要： | 采用熔融共混方法制备了热塑性聚酰亚胺(TPI)与聚醚醚酮(PEEK)的共混物; 用示差扫描量热分析(DSC)研究了共混物的等温结晶动力学. 分别采用Avrami方程和Hoffman-Lauritzen方程分析共混物的等温结晶动力学、端表面自由能(σe)和分子链折叠功(q). 结果表明, 加入TPI后PEEK的结晶速率降低, 结晶活化能、σe和q均增加. 但这些数值的变化与TPI含量不呈线性关系, 并从共混物的相容性和表面形貌给出了可能的解释.
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| 关 键 词： | 热塑性聚酰亚胺 聚醚醚酮 等温结晶 结晶活化能 表面自由能 |
| 收稿时间： | 2010-12-30 |
Isothermal Crystallization Kinetics of Thermoplastic Polyimide and Poly ( ether ether ketone) Blends |
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| GUO Lai-Hui,FANG Xing-Zhong,WANG Gui-Bin,WU Zhong-Wen. Isothermal Crystallization Kinetics of Thermoplastic Polyimide and Poly ( ether ether ketone) Blends[J]. Chemical Research In Chinese Universities, 2011, 32(12): 2908-2915 |
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| Authors: | GUO Lai-Hui FANG Xing-Zhong WANG Gui-Bin WU Zhong-Wen |
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| Affiliation: | 1. Polymer Department, Ningbo Institute of Material Technology & Engineering, Chinese Academy of Sciences, Ningbo 315201, China;2. Alan G. MacDiarmid Institute, College of Chemistry, Jilin University, Changchun 130012, China |
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| Abstract: | Thermoplastic polyimide(TPI) and poly(ether ether ketone)(PEEK) blends were prepared by melt blending and the isothermal crystallization kinetics of the blends was investigated by differential scanning calorimetry(DSC). Avrami equation and Hoffman-Lauritzen equation were used to analyse the isothermal crystallization kinetics, folding-surface free energy(σe) and the work of chain folding(q), respectively. The results showed that the rate of crystallization of PEEK decreased, while activation energy of crystallization, σe and q increased when TPI was added. But there was no linear relationships between the changes of these values and the content of TPI. A possible explanation was given by the investigation of the miscibility and surface morphology of the blends. |
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| Keywords: | Thermoplastic polyimide Poly(ether ether ketone) Isothermal crystallization Activation energy of crystallization Surface free energy |
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