中国塑料2026，Vol.40Issue(4)：34-41,8.DOI:10.19491/j.issn.1001-9278.2026.04.006
芳基酰胺类成核剂对rPET结晶与热老化性能的影响
Effect of aryl amide nucleating agents on crystallization behavior and thermal aging stability of recycled poly(ethylene terephthalate)
摘要
Abstract
To mitigate the challenges of thermal degradation and deteriorating crystallization performance in recycled poly(ethylene terephthalate)(rPET)during thermal aging,this study employed a molecular design strategy for nucleating agents.Specifically,the reactive sodium carboxylate group in the previously reported nucleating agent Na-CBAB was re-placed with chemically inert substituents,yielding two novel derivatives:Am-CBAB and Al-CBAB.It was found that while Na-CBAB significantly elevated the crystallization temperature of rPET,its sodium carboxylate moiety readily re-acted with ester linkages in the rPET matrix under thermal stress.This side reaction induced chain scission,leading to pronounced degradation of both crystallization kinetics and mechanical properties after aging.In contrast,the newly de-veloped aryl amide-based nucleating agents,particularly Am-CBAB,exhibited excellent compatibility with rPET and ef-fectively promoted heterogeneous nucleation without triggering chemical degradation.As a result,Am-CBAB preserved the integrity of the rPET molecular chains during thermal aging and concurrently enhanced both crystallization efficiency and mechanical performance.These findings highlight Am-CBAB as a highly effective and thermally stable nucleating agent for high-performance rPET applications.关键词
回收聚对苯二甲酸乙二醇酯/结晶性能/力学性能/热老化Key words
recycled polyethylene terephthalate/crystallization property/mechanical property/thermal aging分类
化学化工引用本文复制引用
王美珍,赵恬娇,郝新宇,宁丁怡,崔文举,王波..芳基酰胺类成核剂对rPET结晶与热老化性能的影响[J].中国塑料,2026,40(4):34-41,8.基金项目
山西省研究生教育创新计划支持(XS2025020) （XS2025020）
