聚(对苯二甲酸乙二醇酯-co-对苯二甲酸异山梨醇酯)预结晶及固相聚合研究  

Study on pre-crystallization and solid state polycondensation of poly(ethylene terephthalate-co-isosorbide terephthalate) s

作　　者：朱兴松[1] 王余伟[1] 王金堂[1,2] 张金峰[1,2] 

机构地区：[1]中国石化仪征化纤有限责任公司研究院,江苏仪征211900 [2]江苏省高性能纤维重点实验室,江苏仪征211900

出　　处：《合成技术及应用》2017年第2期35-40,共6页Synthetic Technology & Application

摘　　要：研究了不同异山梨醇(ISB)含量的聚(对苯二甲酸乙二醇酯-co-对苯二甲酸异山梨醇酯)(PEIT)共聚酯预结晶及固相聚合工艺。探讨了温度、时间与PEIT共聚酯预结晶温度、固相聚合反应速率之间的关系;利用差式扫描量热仪(DSC)分析研究PEIT共聚固相聚合前后的热性能变化情况。结果表明:随着ISB用量的增加,PEIT共聚酯结晶困难,预结晶时间增加,固相聚合反应速率减慢;随着温度升高,PEIT共聚酯固相聚合反应速率加快,但仍慢于聚对苯二甲酸乙二醇酯(PET);固相增粘后PEIT共聚酯玻璃化转变温度(Tg)与ISB含量呈线性上升关系。The pre - crystallization and solid state polycondensation process of different content of isosorbide （ISB） in Poly（ethylene terephthalate - co - isosorbide terephthalate） s （PEIT） was studied. The relationship be-tween process of temperature, time and PEIT pre - crystallization temperature, solid state polycondensation reaction rate was discussed; By using DCS to analysis the change of thermal properties before and after solid state polycon-densation. The result showed that as the isosorbide content increased, PEIT crystallization was difficult, pre - crys-tallization time was increased and solid state polycondensation reaction rate decreased; As temperatures rised, the solid state polycondensation reaction rate of PEIT was accelerated, but still slower than polyethylene terephthalate （PET） . After solid state polycondensation, the glass transition temperature （Tg） and ISB content was rised by liner relationship.

关 键 词：聚(对苯二甲酸乙二醇酯-co-对苯二甲酸异山梨醇酯) 预结晶 固相聚合 特性粘数 热性能 

分 类 号：O633.14[理学—高分子化学]