Print Email Facebook Twitter Triple-action self-healing protective coatings based on shape memory polymers containing dual-function microspheres Title Triple-action self-healing protective coatings based on shape memory polymers containing dual-function microspheres Author Huang, Yao (University of Science and Technology Beijing) Deng, Leping (University of Science and Technology Beijing) Ju, Pengfei (Shanghai Aerospace Equipment Manufacturer) Huang, Luyao (University of Science and Technology Beijing) Qian, H. (University of Science and Technology Beijing) Zhang, Dawei (University of Science and Technology Beijing) Li, Xiaogang (University of Science and Technology Beijing) Terryn, H.A. (TU Delft (OLD) MSE-6; Vrije Universiteit Brussel) Mol, J.M.C. (TU Delft (OLD) MSE-6) Date 2018 Abstract In this study, a new self-healing shape memory polymer (SMP) coating was prepared to protect the aluminum alloy 2024-T3 from corrosion by the incorporation of dual-function microspheres containing polycaprolactone and the corrosion inhibitor 8-hydroxyquinoline (8HQ). The self-healing properties of the coatings were investigated via scanning electron microscopy, electrochemical impedance spectroscopy, and scanning electrochemical microscopy following the application of different healing conditions. The results demonstrated that the coating possessed a triple-Action self-healing ability enabled by the cooperation of the 8HQ inhibitor, the SMP coating matrix, and the melted microspheres. The coating released 8HQ in a pH-dependent fashion and immediately suppressed corrosion within the coating scratch. After heat treatment, the scratched coating exhibited excellent recovery of its anticorrosion performance, which was attributed to the simultaneous initiation of scratch closure by the shape memory effect of the coating matrix, sealing of the scratch by the melted microspheres, and the synergistic effect of corrosion inhibition by 8HQ. Subject corrosioncorrosion inhibitorself-healing coatingshape memory polymersmart materials To reference this document use: http://resolver.tudelft.nl/uuid:f93ec048-007c-44b7-ac51-976d249c3864 DOI https://doi.org/10.1021/acsami.8b06985 ISSN 1944-8244 Source ACS applied materials & interfaces, 10 (27), 23369-23379 Part of collection Institutional Repository Document type journal article Rights © 2018 Yao Huang, Leping Deng, Pengfei Ju, Luyao Huang, H. Qian, Dawei Zhang, Xiaogang Li, H.A. Terryn, J.M.C. Mol Files PDF acsami.8b06985.pdf 10.86 MB Close viewer /islandora/object/uuid:f93ec048-007c-44b7-ac51-976d249c3864/datastream/OBJ/view