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| PET/PEN共混物的相容性与酯交换反应 | |
| 引用本文： | 苗迎春,高绪珊,王春兰. PET/PEN共混物的相容性与酯交换反应[J]. 高分子学报, 2006, 0(1): 87-91 |
| 作者姓名： | 苗迎春 高绪珊 王春兰 |
| 作者单位： | 1. 四川大学纺织研究所,成都,610065;中国石油化工股份有限公司洛阳分公司研究院,洛阳,471012 2. 北京服装学院材料工程学院,北京,100029 3. 中国石油化工股份有限公司洛阳分公司研究院,洛阳,471012 |
| 摘 要： | 通过用1H-NMR对聚对苯二甲酸乙二酯(PET)与聚2,6-萘甲酸乙二酯(PEN)、PET/PEN共聚物的共混物酯交换反应的研究,测得了反应速率常数、反应活化能和诱导期.根据酯交换反应程度和不同反应温度下的诱导期探讨了酯交换反应与相容性的关系,认为PET与PEN的相容导致或增强了酯交换反应,即相容性是酯交换的必要条件;同时酯交换的发生又促进了PET与PEN的相容.酯交换和相容是聚酯共混物熔融时相互关联的两个过程. |
| 关 键 词： | PET PEN 酯交换反应 动力学 相容性 诱导期 |
| 收稿时间： | 2004-08-30 |
| 修稿时间： | 2004-11-02 |
MISCIBILITY AND TRANSESTERIFICATION IN POLY(ETHYLENE TEREPHTHALATE) AND POLY(ETHYLENE 2,6-NAPHTHALENE) BLENDS |
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| MIAO Yingchun,GAO Xushan,Wang Chunlan. MISCIBILITY AND TRANSESTERIFICATION IN POLY(ETHYLENE TEREPHTHALATE) AND POLY(ETHYLENE 2,6-NAPHTHALENE) BLENDS[J]. Acta Polymerica Sinica, 2006, 0(1): 87-91 | |
| Authors: | MIAO Yingchun GAO Xushan Wang Chunlan |
| Affiliation: | 1 Textile Institute of Sichuan University, Chengdou 610065 ;2 Research Institute of Luoyang Branch, China Petrochemical Ltd. , Luoyang 471012;3 Department of Material Engineering, Beijing Institute of Clothing Technology, Beijing 100029 |
| Abstract: | The transesterification reaction among(poly(ethylene) terephthalate)(PET),(poly(ethylene) 2,6-naphthalate)(PEN),and PET/PEN copolymer were studied with()~1H-NMR.The rate constant k,the activation energy,and induction period of the transesterification reaction for the PET/PEN reactive blend were obtained using a kinetic expression based on a second-order reversible reaction mechanism.The relationship between transesterification and miscibility was discussed on transesterification level and induction period.It was found that miscibility of PET and PEN blends leads to or enhance transesterification,that is,miscibility is a necessary condition for transesterification in the polyester blends;transesterification accelerates miscibility of PET and PEN blends.Both events are interrelated in the molten state of polyester blends. |
| Keywords: | PET PEN Transesterification Kinetic Miscibility Induction period |
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