塑料科技2025，Vol.53Issue(12)：172-178,7.DOI:10.15925/j.cnki.issn1005-3360.2025.12.031
羟基官能化结构成核剂对聚乳酸结晶行为的影响及其机制
Effect and Its Mechanisms of Hydroxyl-functionalized Structural Nucleating Agents on Crystallization Behavior of Polylactic Acid
摘要
Abstract
The slow crystallization rate and low crystallinity of polylactic acid(PLA)have limited its industrial application efficiency and product performance.A series of nucleating agents(OTPTA)with different hydroxyl substitution positions(ortho,meta,para)were synthesized,and PLA-OTPTA composites were prepared using these nucleating agents to investigate the effect of hydroxyl substitution position on the crystallization behavior of PLA.Differential scanning calorimetry was employed to study the effect of OTPTA content on the crystallization behavior of PLA.The results indicated that tris(4-hydroxyphenyl)benzene-1,3,5-tricarboxamide(4OTPTA),with a para hydroxyl group,exhibited the best nucleating effect.When the mass fraction of OTPTA was 1%,4OTPTA significantly increased the crystallization peak temperature and crystallinity of PLA to 104.4℃and 44.5%,respectively,and shortened the half-crystallization time at 135℃to 14.5 min.A stronger intermolecular hydrogen bond interaction existed between 4OTPTA and PLA,which significantly enhanced the interaction between PLA molecular chains and accelerated the formation of the 103 helical structure.关键词
聚乳酸/成核剂/结晶/成核机理Key words
PLA/Nucleating agent/Crystallization/Nucleation mechanism分类
化学化工引用本文复制引用
肖文昊,武靖博,林江华,徐睿杰,雷彩红..羟基官能化结构成核剂对聚乳酸结晶行为的影响及其机制[J].塑料科技,2025,53(12):172-178,7.基金项目
佛山市科技创新项目(FS0AA-KJ919-4402-0145) （FS0AA-KJ919-4402-0145）
