塑料科技2025，Vol.53Issue(11)：1-6,6.DOI:10.15925/j.cnki.issn1005-3360.2025.11.001
生物基聚(对苯二甲酰-co-2,5-吡啶二甲酰-戊二胺)的制备与性能研究
Preparation and Properties Study of Bio-based Poly(Terephthalicyl-co-2,5-Pyrididyldicarboxyl-Pentanediamine)
摘要
Abstract
To investigate the influence of comonomer structure on the properties of semiaromatic polyamides,2,5-pyridinedicarboxylic acid(PyDCA)was introduced into the molecular chain of poly(p-xylylene adipamide)(PA5T).Poly(p-xylylene adipamide-co-2,5-pyridinedicarboxylate)(PA5T/5Py)was obtained by salt formation and high-temperature high-pressure solution polymerization.The effect of the molar fraction of 2,5-pyridinedicarboxylate pentanediamide salt(5Py salt)on the structure and properties of PA5T/5Py was further studied.The results showed that the increase of 5Py salt content led to a decrease in the glass transition temperature(tg),melting point(tm),and initial thermal decomposition temperature(t5％)of PA5T.For PA5T/5Py-50,tm and t5％decreased by 9.8％and 2.0％,respectively,compared to PA5T's 350.3℃and 422.5℃.The introduction of PyDCA was found to enhance the solubility and processability of PA5T.关键词
2,5-吡啶二甲酸/生物基共聚酰胺/热性能Key words
2,5-Pyridinedicarboxylic acid/Bio-based copolyamide/Thermal properties分类
通用工业技术引用本文复制引用
杜云慧,陈爽,游兴华,肖茹..生物基聚(对苯二甲酰-co-2,5-吡啶二甲酰-戊二胺)的制备与性能研究[J].塑料科技,2025,53(11):1-6,6.基金项目
国家重点研发计划项目(2021YFC2101800) （2021YFC2101800）
