Print Email Facebook Twitter Smart protective coatings with self‐sensing and active corrosion protection dual functionality from pH-sensitive calcium carbonate microcontainers Title Smart protective coatings with self‐sensing and active corrosion protection dual functionality from pH-sensitive calcium carbonate microcontainers Author Liu, Tong (University of Science and Technology Beijing) Zhang, Dawei (University of Science and Technology Beijing) Ma, Lingwei (University of Science and Technology Beijing) Huang, Yao (University of Science and Technology Beijing) Hao, Xiangping (University of Science and Technology Beijing) Terryn, H.A. (Vrije Universiteit Brussel) Mol, J.M.C. (TU Delft Team Arjan Mol) Li, Xiaogang (University of Science and Technology Beijing) Date 2022 Abstract Herein, we report the development of a self-sensing and active corrosion protection coating which incorporates pH-sensitive multilayer chitosan/alginate-covered CaCO3 microcontainers containing 1,10-phenanthrolin-5-amine (APhen). The microcontainers can respond to pH variation to release APhen which serves not only as a corrosion indicator but also as an inhibitor. An epoxy coating doped with 5 wt% microcontainers exhibited improved corrosion performance and was capable of inhibiting corrosion spreading from the damaged area in a 3.5 wt% NaCl solution. The salt spray test showed that corrosion damage can be quickly detected by the appearance of a red color within 2 min. Subject Active corrosion protectionCorrosionCorrosion sensingMicrocontainersOrganic coatings To reference this document use: http://resolver.tudelft.nl/uuid:1af5edc9-1184-4bb7-85ba-014af3649369 DOI https://doi.org/10.1016/j.corsci.2022.110254 Embargo date 2022-09-23 ISSN 0010-938X Source Corrosion Science: the journal on environmental degradation of materials and its control, 200 Bibliographical note Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Part of collection Institutional Repository Document type review Rights © 2022 Tong Liu, Dawei Zhang, Lingwei Ma, Yao Huang, Xiangping Hao, H.A. Terryn, J.M.C. Mol, Xiaogang Li Files PDF 1_s2.0_S0010938X2200172X_main.pdf 17.12 MB Close viewer /islandora/object/uuid:1af5edc9-1184-4bb7-85ba-014af3649369/datastream/OBJ/view