MISCIBILITY AND TRANSESTERIFICATION IN POLY(ETHYLENE TEREPHTHALATE) AND POLY(ETHYLENE 2,6-NAPHTHALENE) BLENDS

MIAO Yingchun; GAO Xushan; Wang Chunlan

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MISCIBILITY AND TRANSESTERIFICATION IN POLY(ETHYLENE TEREPHTHALATE) AND POLY(ETHYLENE 2,6-NAPHTHALENE) BLENDS

Research Article | 更新时间：2021-03-19

- MISCIBILITY AND TRANSESTERIFICATION IN POLY(ETHYLENE TEREPHTHALATE) AND POLY(ETHYLENE 2,6-NAPHTHALENE) BLENDS
- Acta Polymerica Sinica Issue 1, Pages: 87-91(2006)
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- Published：20 February 2006，
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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 (1):87-91(2006)
DOI：

MIAO Yingchun, GAO Xushan, Wang Chunlan. MISCIBILITY AND TRANSESTERIFICATION IN POLY(ETHYLENE TEREPHTHALATE) AND POLY(ETHYLENE 2,6-NAPHTHALENE) BLENDS. [J]. Acta Polymerica Sinica (1):87-91(2006) DOI：

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.

Abstract

The transesterification reaction among poly(ethylene terephthalate)(PET)

poly(ethylene 2

6- naphthalate)(PEN)

and PET／PEN copolymer were studied with1H-NMR．The rate constant k

the activation energy．and induction period of the transestetifieation 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 miseibility 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．

关键词

PETPEN酯交换反应动力学相容性诱导期

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