Journal of Bionic Engineering ›› 2023, Vol. 20 ›› Issue (6): 2826-2839.doi: 10.1007/s42235-023-00420-3
Corrosion Resistance and Antifouling Bioinspired Coating with Doped Polyaniline and TO@CA Self-Healing Nanocapsules
Hongli Tian1; Wenbo Du2; Yuchao Zhan1; Limei Tian1; Jie Zhao1; Jiyu Sun1
- 1 Key Laboratory of Bionic Engineering (Ministry of Education, China), Jilin University, Changchun 130022, China 2 National Key Laboratory for Remanufacturing, Army Academy of Armored Forces, Beijing 100000, China
Corrosion Resistance and Antifouling Bioinspired Coating with Doped Polyaniline and TO@CA Self-Healing Nanocapsules
Hongli Tian1; Wenbo Du2; Yuchao Zhan1; Limei Tian1; Jie Zhao1; Jiyu Sun1
- 1 Key Laboratory of Bionic Engineering (Ministry of Education, China), Jilin University, Changchun 130022, China 2 National Key Laboratory for Remanufacturing, Army Academy of Armored Forces, Beijing 100000, China
摘要： 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 efect 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 efect 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.