刘晶如,沈银龙,霍娜丽,张奥开,朱梦冰,俞强

• 1:常州大学材料科学与工程学院

摘要(Abstract)：

采用差示扫描量热法(DSC)和衰减全反射傅里叶变换红外光谱(ATR-FTIR)研究了不同代数和含量的端苯基超支化聚酯(HBP)对聚对苯二甲酸乙二醇酯(PET)结晶行为和构象的影响,计算了晶带与内标峰的吸光度比值以及左右式构象的相对含量。其中975 cm 1和1340 cm 1处的吸收峰归属于反式构象,1370 cm 1处归属于左右式构象,793 cm 1和873 cm 1处的吸收峰为内标峰。结果表明,6%的第三代超支化聚酯对PET的结晶促进能力最强。随着超支化聚酯含量或代数的增加,各吸光度比值基本上都呈现出先增大后减小的趋势,左右式构象的含量则表现出先减小后增大的趋势。端苯基超支化聚酯既可以充当成核剂,又可以充当结晶促进剂,因而可以促进PET结晶。

关键词(KeyWords)： 聚对苯二甲酸乙二醇酯;端苯基超支化聚酯;结晶;构象

Abstract:

Keywords:

基金项目(Foundation): 常州大学校基金项目(ZMF08020068)

作者(Author): 刘晶如,沈银龙,霍娜丽,张奥开,朱梦冰,俞强

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