聚多巴胺对软质医用聚氯乙烯改性的研究  

Study on Modification of Soft Medical Polyvinyl Chloride by Polydopamine

作　　者：齐宇 陈三玲 田建贺 陈天奇 陈曼曼 潘玮[1,3] QI Yu;CHEN Sanling;TIAN Jianhe;CHEN Tianqi;CHEN Manman;PAN Wei(Research Institute of Textile and Clothing Industries,Zhongyuan University of Technology,Zhengzhou 450007,China;Henan Jianqi Medical Equipment Co.,Ltd.,Xinxiang 453400,China;School of Materials&Chemical Engineering,Zhongyuan University of Technology,Zhengzhou 450007,China)

机构地区：[1]中原工学院纺织服装产业研究院,河南郑州450007 [2]河南省健琪医疗器械有限公司,河南新乡453400 [3]中原工学院材料与化工学院,河南郑州450007

出　　处：《塑料工业》2023年第11期69-74,147,共7页China Plastics Industry

基　　金：河南科技重点科技攻关项目(222102230093)。

摘　　要：本文首先采用了溶液氧化法制备了聚多巴胺(PDA)颗粒,然后以PDA颗粒为改性添加剂,以柠檬酸三丁酯(TBC)为环保增塑剂,通过双螺杆熔融共混制备了软质聚氯乙烯/聚多巴胺(PVC-PDA)复合材料。考察了PDA添加量对所制备的软质PVC-PDA的性能影响规律,并对复合材料的微观结构、力学性能、增塑剂迁移及亲水性能等进行表征。结果表明,在PDA质量分数为1%时,与纯PVC相比,拉伸强度提高了87%,断裂伸长率提高了23%;在去离子水和乙醇中浸泡48 h后发现,PVC-1%PDA复合材料的质量损失相较于纯PVC,分别下降了39.3%和42.1%;同时随着PDA含量的增加,复合材料亲水性增强。In this paper,polydopamine(PDA)particles were prepared by solution oxidation method,and then soft polyvinyl chloride/polydopamine(PVC-PDA)composites were prepared by twin-screw melt blending with PDA particles as modification additive and tributyl citrate(TBC)as environmental plasticizer.The effect of the amount of PDA on the properties of PVC-PDA was investigated,and the microstructure,mechanical properties,plasticizer migration and hydrophilic properties of the composite were characterized.The results show when the content of PDA is 1%,the tensile strength is increased by 87%and the elongation at break is increased by 23%comparing with pure PVC.After soaking in deionized water and ethanol for 48 h,it is found that the mass loss of PVC-1%PDA composite decreases by 39.3%and 42.1%comparing with pure PVC,respectively.The hydrophilicity of the composite increases with the increase of PDA contents.

关 键 词：聚多巴胺 聚氯乙烯 力学性能 亲水性 增塑剂迁移 

分 类 号：TQ325.3[化学工程—合成树脂塑料工业]