Solid state polymerization of poly(ethylene terephthalate): Kinetic and property parameters

Solid state polymerization of poly(ethylene terephthalate): Kinetic and property parameters
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聚对苯二甲酸乙二醇酯的固态聚合：动力学和性能参数

DOI：
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发表时间：
1986
期刊：
影响因子：
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通讯作者：
E. A. Lofgren
E. A. Lofgren
中科院分区：
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文献类型：
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作者：
S. Jabarin;E. A. Lofgren

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研究了不同条件下聚对苯二甲酸乙二酯（PET）的固相聚合动力学。已经开发了方程来描述由特定催化剂和单体系统制备的PET前体的时间、温度和最终分子量的关系。这些研究显示了以下因素的影响：固态化的时间和温度、水分浓度、氧气暴露和氮气吹扫流速。特性粘度、羧基端基浓度、熔点、残留乙醛和熔融过程中产生的乙醛的测量用于监测这些固态树脂的分子量、纯度和热稳定性。
The kinetics of solid state polymerization of poly(ethylene terephthalate) (PET) have been investigated at a variety of conditions. Equations have been developed to describe the relationships of time, temperature, and final molecular weight for PET precursors prepared from specified catalyst and monomer systems. These studies show effects of: time and temperature of solid stating, moisture concentration, oxygen exposure, and nitrogen purge flow rate. Measurements of inherent viscosity, carboxyl end group concentration, melting point, residual acetaldehyde, and acetaldehyde generated during melting are used to monitor molecular weight, purity, and thermal stability of these solid stated resins.