铝酸酯偶联剂增容增塑聚己二酸-对苯二甲酸丁二醇酯/聚乳酸共混体系  

Poly(adipate butylene-to-terephthalate)/Poly(lactic acid)Blend System with Aluminate Coupling Agent

作　　者：赵海鹏 胡顺朋 李桂丽 夏学莲 张延兵 王启蒙 Haipeng Zhao;Shunpeng Hu;Guili Li;Xuelian Xia;Yanbing Zhang;Qimeng Wang(School of Materials and Chemical Engineering,Henan University of Urban Construction,Pingdingshan 467036,China;School of Chemical Engineering,Zhengzhou University,Zhengzhou 450001,China)

机构地区：[1]河南城建学院材料与化工学院,河南平顶山467036 [2]郑州大学化工学院,河南郑州450001

出　　处：《高分子材料科学与工程》2022年第11期34-40,共7页Polymer Materials Science & Engineering

基　　金：平顶山市重大科技攻关项目(2020ZD05)。

摘　　要：以铝酸酯偶联剂(ACA)为增容剂,采用熔融共混法制备了聚己二酸-对苯二甲酸丁二醇酯(PBAT)/聚乳酸(PLA)/ACA共混材料。利用红外光谱分析仪、熔融指数仪、差示扫描量热仪、旋转流变仪、动态力学热分析仪、扫描电子显微镜和伺服控制拉力试验机分别研究了ACA含量对PBAT/PLA共混体系结构与性能的影响。结果表明,ACA穿插在PBAT和PLA分子链间,与PBAT和PLA发生了物理缠绕,增大了分子间距离,提高了分子链的柔顺性,增强了PBAT与PLA间的作用力,改善了两相的相容性,增加了PBAT/PLA/ACA共混材料的拉伸韧性,断裂伸长率由250.9%提高到410.7%。ACA具有显著的增塑效果,使共混体系的熔体质量流动速率增加,共混体系的储存模量、损耗模量、复数黏度及PBAT和PLA的玻璃化转变温度降低,PLA的结晶度由18.8%增加到26.6%。Poly(adipate butylene-to-terephthalate)/poly(lactic acid)(PBAT/PLA)blends were prepared by melt blending using aluminate coupling agent(ACA)as compatibilizer.The effects of ACA content on the structure and properties of PBAT/PLA blend system were investigated by FT-IR,melt indexer,differential scanning calorimeter,rotational rheometer,dynamic mechanical thermal analyzer,SEM and servo control tensile testing machine.The results show that ACA interpenetrates between PBAT and PLA molecular chains,causing physical entanglement with PBAT and PLA,increasing intermolecular distance,improving molecular chain compliance,and enhancing the force between PBAT and PBAT.The compatibility of the two phases is improved,and the tensile toughness of PBAT/PLA/ACA blend is increased.The elongation at break of PBAT/PLA/ACA blend is increased from 250.9%to 410.7%.The ACA has a remarkable plasticizing effect,which increases the melt mass flow rate,and the storage modulus,loss modulus,complex viscosity and glass transition temperature of PBAT and PLA of the blend systems are reduced,and the crystallinity of PLA in the blend systems is increased from 18.8%to 26.6%.

关 键 词：聚己二酸-对苯二甲酸丁二醇酯 聚乳酸 铝酸酯偶联剂 增塑 增容 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]