Melt Polycondensation/Solid Phase Condensation Polymerization into Polyethylene Oxalate and Its Performance Characterization

Jun-kai TIAN; Lin-lin JIN; Wei-dong YANG; Jun GAO; Chang-hai FAN; Ai-jun CUI; Ming-yang HE; Qun CHEN

doi:10.14028/j.cnki.1003-3726.2020.07.005

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Melt Polycondensation/Solid Phase Condensation Polymerization into Polyethylene Oxalate and Its Performance Characterization

更新时间：2022-08-31

- Melt Polycondensation/Solid Phase Condensation Polymerization into Polyethylene Oxalate and Its Performance Characterization
- Polymer Bulletin Vol. 33, Issue 7, Pages: 38-45(2020)
- 作者机构：
  
  1.浙江卫星能源有限公司,嘉兴 314200
  2.常州大学江苏省精细石油化工重点实验室,常州 213164
- 作者简介：
- 基金信息：
- DOI：10.14028/j.cnki.1003-3726.2020.07.005
  CLC：
- Published：20 July 2020，
  
  Received：19 August 2019，
  
  Revised：19 March 2020，
扫描看全文
Jun-kai TIAN, Lin-lin JIN, Wei-dong YANG, Jun GAO, Chang-hai FAN, Ai-jun CUI, Ming-yang HE, Qun CHEN. Melt Polycondensation/Solid Phase Condensation Polymerization into Polyethylene Oxalate and Its Performance Characterization. [J]. Polymer Bulletin 33(7):38-45(2020)
DOI：

Jun-kai TIAN, Lin-lin JIN, Wei-dong YANG, Jun GAO, Chang-hai FAN, Ai-jun CUI, Ming-yang HE, Qun CHEN. Melt Polycondensation/Solid Phase Condensation Polymerization into Polyethylene Oxalate and Its Performance Characterization. [J]. Polymer Bulletin 33(7):38-45(2020) DOI： 10.14028/j.cnki.1003-3726.2020.07.005.

摘要

为解决直接聚合聚草酸乙二醇酯粘度低

利用熔融缩聚和固相缩聚联用的工艺合成较高粘度的聚酯。聚草酸乙二醇酯在170℃

氯化亚锡催化剂直接熔融缩聚

125±2℃进行固相缩聚40h

特性粘度增加到0.236dl·g

-1

。通过红外和核磁进行表征分子结构;利用DSC表征固相缩聚比直接聚合结晶温度高10℃

达到137℃。固相缩聚后聚酯粘度增加

结晶性能改变

结晶温度增加。

Abstract

in order to solve the low viscosity of direct polymerization polyoxalate glycol ester

polyester with high viscosity was synthesized by means of melt condensation polymerization and solid-phase condensation polymerization. Polyoxalate glycol ester was directly fused and condensed at 170℃ with stannum chloride catalyst. Solid phase polycondensation was performed at 125±2℃ for 40h. The characteristic viscosity increased to 0.236dl·g

-1

.The molecular structure was characterized by ir and NMR.DSC was used to characterize the crystallization temperature of solid phase polycondensation 10℃ higher than that of direct polymerization

reaching 137℃.After solid phase polycondensation

the viscosity increases

the crystallization property changes

and the crystallization temperature increases.

关键词

聚草酸乙二醇酯草酸固相缩聚降解

Keywords

Polyethylene oxalateOxalic acidMelt polycondensationDegradation

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