摘要
采用差示扫描量热法(DSC)研究了2-甲基-1,3-丙二醇(MPO)改性共聚酯的非等温结晶行为。研究结果表明:MPO的加入使聚对苯二甲酸乙二醇酯(PET)结晶温度降低,半结晶时间(t_(1/2))延长;采用Jeziorny法分析了此体系的非等温结晶行为,发现结晶速率常数(Z_c)随MPO的加入而减小,表明MPO的加入降低了PET的结晶能力,此改性共聚酯将在瓶材和板材方面有更为广阔的应用前景。
A series of modified copolyesters were synthesized with 2-methy-1, 3-propanediol （MPO）. Non-isothermal crystallization behavior of the copolyesters were researched by differential scanning calorimetry（DSC）. The results showed that the crystallization temperature of PET with MPO decreased and half crystallization time （ t1/2 ） increased. The non-isothermal crystallization behavior of the copolyesters was studied with Jeziorny method. It was found that crystallization rate constant（ Zc ） decreased with joining MPO. It showed that the crystallization ability of PET decreased with joining MPO. So the modified copolyester would have a broader application in terms of bottles and board.
出处
《塑料》
CAS
CSCD
北大核心
2015年第5期101-104,共4页
Plastics
关键词
2-甲基-1
3-丙二醇
聚对苯二甲酸乙二醇酯
改性共聚酯
非等温结晶
差示扫描量热仪
2-methy- 1, 3-propanediol
poly （ ethylene terephthalate）
modified copolyester
non-isothermal crystallization
differential scanning calorimetry
作者简介
姜涛（1957-），男，教授，主要从事高分子材料合成及应用方面的研究。E-mail：13941909695@163．com。
