Corrosion Resistance and Antifouling Bioinspired Coating with Doped Polyaniline and TO@CA Self-Healing Nanocapsules

IF 4.9 3区计算机科学 Q1 ENGINEERING, MULTIDISCIPLINARY

Journal of Bionic Engineering Pub Date : 2023-10-19 DOI:10.1007/s42235-023-00420-3

Hongli Tian, Wenbo Du, Yuchao Zhan, Limei Tian, Jie Zhao, Jiyu Sun

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Abstract

In this study, an integrative bioinspired coating system for antifouling and corrosion resistance was investigated, in which self-healing nanocapsules (tung oil calcium alginate, TO@CA), doped polyaniline and nano-titanium dioxide nanocomposites (SPAn–TiO₂) and a biostructure metal surface were combined. The antifouling property of the bioinspired coating resulted from the synergistic antifouling effect of nano-TiO₂ and acid-doped polyaniline in SPAn–TiO₂. The protonated nitrogen with a positive charge in SPAn–TiO₂ and the intrinsic bactericidal property of nano-TiO₂ could damage negatively charged single-celled chlorella, endowing the composite coating with good antifouling performance (less algae attached on the surfaces after a 90-day antifouling test and a conductivity test). The composite bioinspired coating had excellent corrosion resistance, which was due to the good synergistic anticorrosion barrier effect of SPAn–TiO₂ with TO@CA nanocapsules and the repairing ability of microcracks of TO@CA nanocapsules during the corrosion process. The bioinspired coating with 2 wt% SPAn–TiO₂ and 2 wt% TO@CA nanocapsules exhibited a better adhesion, corrosion resistance and antifouling performance than the other coatings did.

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掺杂聚苯胺和聚苯胺的耐腐蚀防污生物涂料TO@CA自愈纳米胶囊

在本研究中，研究了一种用于防污和耐腐蚀的一体化仿生涂层系统，其中自修复纳米胶囊（桐油藻酸钙，TO@CA)，掺杂聚苯胺和纳米二氧化钛纳米复合材料（SPAn–TiO2）与生物结构金属表面相结合。纳米TiO2和酸掺杂聚苯胺在SPAn–TiO2中的协同防污作用是生物启发涂层防污性能的结果。SPAn–TiO2中带正电荷的质子化氮和纳米TiO2的固有杀菌性能可以破坏带负电荷的单细胞小球藻，使复合涂层具有良好的防污性能（经过90天的防污测试和导电测试，表面附着的藻类较少）。由于SPAn–TiO2与TO@CA纳米胶囊及其微裂纹修复能力TO@CA腐蚀过程中的纳米胶囊。含有2 wt%SPAn–TiO2和2 wt%的仿生涂层TO@CA纳米胶囊比其他涂层具有更好的附着力、耐腐蚀性和防污性能。

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来源期刊

Journal of Bionic Engineering 工程技术-材料科学：生物材料

CiteScore

7.10

自引率

10.00%

发文量

162

审稿时长

10.0 months

期刊介绍： The Journal of Bionic Engineering (JBE) is a peer-reviewed journal that publishes original research papers and reviews that apply the knowledge learned from nature and biological systems to solve concrete engineering problems. The topics that JBE covers include but are not limited to: Mechanisms, kinematical mechanics and control of animal locomotion, development of mobile robots with walking (running and crawling), swimming or flying abilities inspired by animal locomotion. Structures, morphologies, composition and physical properties of natural and biomaterials; fabrication of new materials mimicking the properties and functions of natural and biomaterials. Biomedical materials, artificial organs and tissue engineering for medical applications; rehabilitation equipment and devices. Development of bioinspired computation methods and artificial intelligence for engineering applications.