NON-ISOTHERMAL CRYSTALLIZATION BEHAVIOR OF POLY(ETHYLENE TEREPHTHATE)

ZHANG Weidong; SHEN Deyan

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NON-ISOTHERMAL CRYSTALLIZATION BEHAVIOR OF POLY(ETHYLENE TEREPHTHATE)

Research Article | 更新时间：2021-03-19

- NON-ISOTHERMAL CRYSTALLIZATION BEHAVIOR OF POLY(ETHYLENE TEREPHTHATE)
- Acta Polymerica Sinica Issue 4, Pages: 444-448(1999)
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- Published：20 August 1999，
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ZHANG Weidong, SHEN Deyan. NON-ISOTHERMAL CRYSTALLIZATION BEHAVIOR OF POLY(ETHYLENE TEREPHTHATE). [J]. Acta Polymerica Sinica (4):444-448(1999)
DOI：

ZHANG Weidong, SHEN Deyan. NON-ISOTHERMAL CRYSTALLIZATION BEHAVIOR OF POLY(ETHYLENE TEREPHTHATE). [J]. Acta Polymerica Sinica (4):444-448(1999) DOI：

摘要

用付里叶变换红外光谱法、示差扫描量热、广角Ｘ-射线衍射和密度法等手段

研究了聚对苯二甲酸乙二酯（ＰＥＴ）的非等温结晶行为．在１１０℃以上

ＰＥＴ的结晶度随温度的升高而增加；在１６０～２３０℃温度区间

ＰＥＴ的结晶度随温度的升高变化不大．但在其后的降温过程中

其结晶度显著增加．从高温缓冷试样的结晶度明显地比淬火试样的高．实验结果有力地支持了高聚物在结晶前链的折叠就已经形成的观点．

Abstract

Non-isothermal crystallization behavior of poly(ethylene terephthalate) was studied by means of infrared spectroscopy

differential-scanning calorimetry

X-ray diffraction and density method.The PET began to crystallize as the temperature higher than 110.There isn't obvious change in the crystallinity from 160 to 230℃.But the crystallinity of PET continually increases during the later cooling process.The crystallinity of slowly cooled sample from 230℃ is much higher than that of rapidly quenched sample.These results provide strong evidence for chain folding existing before crystallization.

关键词

聚对苯二甲酸乙二酯结晶红外光谱示差扫描量热

Keywords

Poly（ethylene terephthalate）CrystallizationInfrared spectroscopyDifferential\

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Related Institution

SINOPEC Beijing Research Institute of Chemical Industry

College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University

State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology

Key Laboratory of Rubber-Plastics, Ministry of Education/Shandong Provincial Key Laboratory of Rubber-plastics, School of Polymer Science and Engineering, Qingdao University of Science & Technology

Bohai Rim Collaborative Innovation Center on Green Chemical Application Technology, Department of Chemical Engineering, Weifang Vocational College

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