聚合松香增容聚乳酸/聚(己二酸丁二醇酯-对苯二甲酸丁二醇酯)共聚物共混纤维的结构与性能  

Structure and Properties of Poly(lactic acid)/Poly(butylene adipate terephthalate)Copolymer Blend Fibers Compatibilized with Polymerized Rosin

作　　者：钱裕洁 王文刚 皮秋月 王艳红 侯秀良[1] 徐荷澜 刘鹏 Yujie Qian;WengangWang;Qiuyue Pi;YanhongWang;Xiuliang Hou;Helan Xu;Peng Liu(Key Laboratory of Ecological Textile,Jiangnan University,Ministry of Education,Wuxi 214122,China;Textile Industrial Products Testing Center of Nanjing Customs District,Wuxi 214101,China;Shanghai Institute of Quality Supervision and Inspection Technology,Shanghai 200031,China)

机构地区：[1]江南大学生态纺织教育部重点实验室,江苏无锡214122 [2]南京海关纺织工业产品检测中心,江苏无锡214101 [3]上海市质量监督检验技术研究院,上海200031

出　　处：《高分子材料科学与工程》2024年第7期52-62,共11页Polymer Materials Science & Engineering

基　　金：国家自然科学基金资助项目(52303039)。

摘　　要：以聚合松香(PR)为相容剂,采用熔融共混法制备了不同比例的聚乳酸/聚(己二酸丁二醇酯-对苯二甲酸丁二醇酯)(PLA/PBAT)共混纤维。采用拉伸试验、微观结构、热分析和流变测试分析评估了熔体和纤维的物化性能。PR的引入使得PBAT和PLA的玻璃化转变温度及熔融温度降低,促进了PBAT相的均匀分散,分散相尺寸明显减小,增强了PBAT的非均相成核效应,提高了PLA的结晶温度,并在30%PR时观测到了直径小于2μm的微纤结构。随着PBAT含量的增加,共混纤维的断裂伸长率与断裂强度均得到显著提升,断裂伸长率最多提高了近600%,同时断裂强度不仅得到了保留,还提升了200%左右。Polymerized rosin(PR)was used as compatibilizer,and poly(lactic acid)/poly(butylene terephthalate-butylene terephthalate)(PLA/PBAT)blend fibers with different PLA/PBAT ratios were prepared by melt blending method.The physical and chemical properties of the blends and fibers were evaluated by tensile test,microstructural observation,thermal analyses,and rheological test.Introduction of PR leads to a decrease in the glass transition and melting temperature of PBAT and PLA,promoting the homogeneous dispersion of PBAT phase.In the PR-contained mixture with PLA and PBAT,PR particles with smaller particle sizes were obtained,the heterogeneous nucleation effect of PBAT are enhanced,and the crystallization temperature of PLA increases.With a PR mass fraction of 30%,the diameter of microfiber is reduced to less than 2μm.With the increase of PBAT content,both the elongation at break is increased by up to nearly 600%,and the breaking strength of the blend fibers is also increased by about 200%.

关 键 词：聚乳酸 聚(己二酸丁二醇酯-对苯二甲酸丁二醇酯) 聚合松香 增容 共混纤维 

分 类 号：TQ342[化学工程—化纤工业]