改性纤维素纳米晶补强生物可降解聚己二酸-对苯二甲酸丁二醇酯的性能  

Properties of biodegradable poly(butylene adipate-co-terephthalate)reinforced by modified cellulose nanocrystals

作　　者：傅国娟 胡嵩 史新妍[2] FU Guojuan;HU Song;SHI Xinyan(Shandong Chemical Engineering Vocational College,Weifang 261108,China;School of Polymer Science and Engineering,Qingdao University of Science and Technology,Qingdao 266042,China)

机构地区：[1]山东化工职业学院,山东潍坊261108 [2]青岛科技大学高分子科学与工程学院,山东青岛266042

出　　处：《弹性体》2025年第1期21-28,共8页China Elastomerics

摘　　要：为了应对塑料废物的堆积在全球范围内引发的一系列环境问题,以生物可降解性塑料聚己二酸-对苯二甲酸丁二醇酯(PBAT)为基体,采用新型纳米填料(聚乙酸乙烯酯接枝改性的纤维素纳米晶,简称CNC-PVAc)作为补强材料,探究了其用量对PBAT复合材料性能的影响。结果表明,CNC-PVAc在PBAT中实现了纳米级分散,改变了PBAT的结晶动力学,提高了PBAT/CNC复合材料结晶结构的完整性;随着CNC-PVAc用量增加,PBAT/CNC的力学性能呈现先上升后下降的趋势,其中CNC-PVAc用量为1份时性能最好,拉伸强度为18.7 MPa,相比于纯PBAT,提高了49.6%;适量CNC-PVAc的加入提高了PBAT的阻隔性能,在保证PBAT可降解的基础上实现了PBAT综合性能的提升。To solve the environmental problems caused by the global accumulation of plastic waste,this study utilizes biodegradable poly(butylene adipate-co-terephthalate)(PBAT)as the matrix,with a novel nanofiller,cellulose nanocrystals grafted with poly(vinyl acetate)(CNC-PVAc),and explore the impact of CNC-PVAc content on the properties of PBAT composite materials.The result shows that CNC-PVAc achieves nanoscale dispersion within PBAT,altering its crystallization kinetics and enhancing the integrity of the crystalline structure in PBAT/CNC composites.The mechanical properties of PBAT/CNC initially increase and then decline as the amount of CNC-PVAc increases,with the best performance at 1phr of CNC-PVAc,when the tensile strength reaches 18.7 MPa,a 49.6%improvement compared to pure PBAT.The addition of an appropriate amount of CNC-PVAc also enhances the barrier properties of PBAT,thereby improving its overall performance while ensuring its biodegradability.

关 键 词：聚己二酸-对苯二甲酸丁二醇酯 改性纤维素纳米晶 纳米填料 

分 类 号：TQ327.3[化学工程—合成树脂塑料工业]