基于聚琥珀酰亚胺衍生物仿生超亲水表面的制备及性能  

Preparation and Characterization of Biomimetic Superhydrophilic Surface Based on Polysuccinimide Derivatives

作　　者：刘云鸿 彭新艳 徐文涛 王汉春 Yun-hong Liu;Xin-yan Peng;Wen-tao Xu;Han-chun Wang(School of Chemical Engineering and Materials Science,Quanzhou Normal University,Quanzhou 362000;College of Mechanical and Energy Engineering,Jimei University,Xiamen 361021)

机构地区：[1]泉州师范学院化工与材料学院,泉州362000 [2]集美大学海洋装备与机械工程学院,厦门361021

出　　处：《高分子学报》2022年第3期279-288,共10页Acta Polymerica Sinica

基　　金：福建省泉州市科技计划项目(项目号2019C105);福建省教育厅中青年教师教育科研项目(项目号JAT190515,JAT190516);泉州师范学院博士科研启动基金(基金号H19015,H19014)资助项目。

摘　　要：利用对聚琥珀酰亚胺(PSI)的亲核加成反应,仿生设计合成侧基带有多巴胺和磺酸甜菜碱两性离子基团的新型聚琥珀酰亚胺衍生物(PSI-DA-ZW);通过聚琥珀酰亚胺衍生物中多巴邻苯二酚基团的氧化自聚和沉积,制备了仿生超亲水功能涂层表面(PSI-DA-ZW/glass).利用X射线光电子能谱仪(XPS)、扫描电子显微镜(SEM)、接触角测量仪及紫外可见分光光度计等分别表征了其化学结构、形态、润湿性和透光性等.研究结果表明,两性离子基团成功引入到PSI-DA-ZW/glass样品表面,所制备的仿生功能涂层表面具有纳米级自组装微结构,其表面水滴接触角接近0°、水下油滴接触角接近180°,具有优异的超亲水和水下防油污特性;涂层具有较好的透光性,在550 nm波长处的透光率可达到90.4%,与空白玻璃相比,展示出增透效果;抗细菌黏附实验结果显示,所制备的PSI-DA-ZW/glass功能涂层表面对金黄色葡萄球菌和大肠杆菌均具有明显的抗黏附性能.本文仿生超亲水功能涂层表面的制备方法简单有效,对不同基材适用性强,赋予了该功能涂层在卫浴材料、生物医用涂层、油水分离、防污涂料等领域的潜在应用价值.In this work,a novel type of polysuccinimide(PSI)derivative with dopamine and zwitterionic sulfobetaine groups in the side chain was designed and synthesized via nucleophilic ring-opening reaction on polysuccinimide.Then,a biomimetic superhydrophilic coating(PSI-DA-ZW/glass)was prepared through the oxidative self-polymerization and deposition of the pendant catechol anchor group in PSI-DA-ZW on the surface of glass.The micro-chemical structure,wettability and transmittance of the functional coatings were characterized by Fourier transform infrared spectrometer(FTIR),X-ray photoelectron spectroscopy(XPS),scanning electron microscope(SEM),contact angle measuring instrument,and UV-visible spectroscopy(UV-Vis),respectively.The research results showed that the zwitterionic group was successfully introduced to the surface of the PSI-DA-ZW/glass sample.Compared with the original surfaces,the obtained biomimetic functional surface had self-assembly into nanoscale microstructures,with a water contact angle(WCA)close to 0°and an underwater-oil contact angle(UWOCA)close to 180°,presenting excellent superhydrophilic and underwater oil-repellent properties.Meanwhile,the functional surface had a light transmittance of 90.4%at 550 nm,showing good antireflection effect compared with that of the blank glass.Moreover,the bacterial adhesion experiments demonstrated that PSIDA-ZW/glass surface exhibited obvious anti-adhesion properties for S.aureus and E.coli.The simple and effective method for preparing biomimetic functional surface proposed in this study is suitable for different substrates and thus had potential application in the fields of sanitary materials,biomedical coatings,oil-water separation,antifouling coatings and so on.

关 键 词：超亲水表面 两性离子 多巴胺 聚琥珀酰亚胺衍生物 仿生改性 

分 类 号：TB34[一般工业技术—材料科学与工程]