| 聚碳酸亚丙酯对聚(β-羟基丁酸酯-β-羟基戊酸酯)结晶行为的影响 |
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| 引用本文： | 李静,刘景江.聚碳酸亚丙酯对聚(β-羟基丁酸酯-β-羟基戊酸酯)结晶行为的影响[J].高等学校化学学报,2004,25(6):1145-1148. |
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| 作者姓名： | 李静 刘景江 |
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| 作者单位： | 中国科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,长春,130022 |
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| 基金项目： | 中国科学院创新重点课题 (批准号 :KGCX2 -2 0 2 A-0 3 )，国家“八六三”课题 (批准号 :2 0 0 2 AA 3 3 40 9)资助 |
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| 摘 要： | 用FTIR和DSC研究了PHBV及其与聚碳酸亚丙酯(PPC)熔融共混样的熔融结晶行为和等温结晶动力学.结果表明,PHBV与PPC熔融共混过程中发生了酯交换反应,两组分间存在一定的相互作用.PPC虽然能降低PHBV结晶折迭链的表面自由能,但同时也能够降低PHBV的结晶度、球晶径向生长速率、平衡熔点和结晶能力.
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| 关 键 词： | 聚(β-羟基丁酸酯-β-羟基戊酸酯) 聚碳酸亚丙酯 结晶 酯交换反应 |
| 文章编号： | 0251-0790(2004)06-1145-04 |
| 收稿时间： | 2003-06-02 |
Effect of PPC on the Crystallization Behavior of Poly(β-hydroxybutyrate-co-β-hydroxyvalerate) |
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| LI Jing,LIU Jing-Jiang.Effect of PPC on the Crystallization Behavior of Poly(β-hydroxybutyrate-co-β-hydroxyvalerate)[J].Chemical Research In Chinese Universities,2004,25(6):1145-1148. |
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| Authors: | LI Jing LIU Jing-Jiang |
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| Institution: | State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China |
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| Abstract: | The crystallization behavior of PHBV and PHBV/PPC(mass ratio: 30∶70) blend was investigated by DSC and FTIR. The result showed that PHBV and PPC had a certain extent of transesterification reaction in the melt blending process. The certain interaction between the two macromolecules was confirmed by means of FTIR analysis. The fold surface free energy of the developing crystals of PHBV isothermally crystallized from melt decreased,however,the relative degree of crystallization,the linear growth rate of spherulites,equilibrium melting temperature and crystallization capability of PHBV decreased due to the addition of PPC. |
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| Keywords: | Poly(β-hydroxybutyrate-co-β-hydroxyvalerate)(PHBV) Poly(propylene carbonate) Crystallization Transesterification reaction |
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