摘要
亲水和低摩擦表面涂层在生物植入体及医疗器械方面有着很广泛的应用,为发展简单、通用的涂层制备方法,本文作者采用聚多巴胺辅助共沉积技术,将壳聚糖基两性离子共聚物组装到材料表面,制备了超亲水、低摩擦和抗污染水润滑纳米涂层,考察了聚合物浓度对共沉积复合涂层的厚度、亲水性和润滑性的影响.结果表明:随着聚合物浓度的增大,涂层厚度略有下降;该涂层在纯水及不同生物介质中表现出优异的润滑性能(摩擦系数μ为0.015)和抗污染性能.该方法适用于多种惰性材料表面(金属、陶瓷和聚合物等),有望用于生物植入体、医用导管等表面制备多功能水润滑纳米涂层.
Low friction and hydrophilic surfaces have critical applications in biomedical devices and implants.This work reports a facile and universal method to prepare hydrophilic,low friction and antifouling coating by dopamine assisted codeposition of chitosan graft zwitterionic copolymer.The effects of polymer concentration on the thickness,hydrophilicity and lubricity of co-deposited coatings were investigated.The results show that the coating thickness decreases slightly with the increase of polymer concentration.The codeposited coating shows superior lubrication performance(friction coefficientμis 0.015)and antifouling in pure water as well as biological fluids.Furthermore,the versatility of this strategy allows fabrication of lubricious polymer coatings on diverse materials surfaces.This multifunctional coating may find important applications in biomedical devices and implants.
作者
魏强兵
岳芹宇
李乐乐
付甜
麻拴红
周峰
WEI Qiangbing;YUE Qinyu;LI Lele;FU Tian;MA Shuanhong;ZHOU Feng(Key Laboratory of Eco-Environmental-Related Polymer Materials,Ministry of Education,Key Laboratory of Polymer Materials of Gansu Province,College of Chemistry and Chemical Engineering,Northwest Normal University,Gansu Lanzhou730070,China;State Key Laboratory of Solid Lubrication,Lanzhou Institute of Chemical Physics,Chinese Academy of Sciences,Gansu Lanzhou730000,China)
出处
《摩擦学学报》
EI
CAS
CSCD
北大核心
2019年第4期387-395,共9页
Tribology
基金
国家自然科学基金项目(21504070,51705507)
甘肃省高等学校科研项目(2015B-029)
国家重点研发计划项目(2016YFC1100401)资助~~
关键词
聚多巴胺
两性离子聚合物
表面改性
水润滑
低摩擦涂层
polydopamine
zwitterionic polymer
surface modification
aqueous lubrication
low friction coating
