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Results showed that the loading capacity of the bowl-shaped mesoporous polydopamine reaches 24 wt.%. The M-M@P exhibits a cumulative MBI release of 91.61% after immersion in a 3.5 wt.% NaCl solution at pH = 2 for 24 h, accompanied by a corrosion inhibition efficiency of 95.54%. Additionally, the acid-responsive M-M@P not only enables controlled release of MBI but also synergistically promotes the formation of a protective film on the carbon steel substrate via the chelation of PDA-Fe3+, thereby enhancing the self-healing performance of waterborne epoxy coatings.<\/jats:p>","DOI":"10.3390\/polym17162265","type":"journal-article","created":{"date-parts":[[2025,8,21]],"date-time":"2025-08-21T15:19:02Z","timestamp":1755789542000},"page":"2265","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Acid-Responsive Self-Healing Waterborne Epoxy Coating: Preparation, Release Behavior, and Anticorrosion Performance Based on Bowl-Shaped Mesoporous Polydopamine Nanocontainer Loaded with 2-MBI Inhibitors"],"prefix":"10.3390","volume":"17","author":[{"given":"Xiaohong","family":"Ji","sequence":"first","affiliation":[{"name":"State Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Minghui","family":"Yang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China"},{"name":"Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0000-9217-5315","authenticated-orcid":false,"given":"Huiwen","family":"Tian","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jin","family":"Hou","sequence":"additional","affiliation":[{"name":"Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education, College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jingqiang","family":"Su","sequence":"additional","affiliation":[{"name":"Shandong Railway Investment Holding Group Co., Ltd., Jinan 250014, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhen","family":"Wang","sequence":"additional","affiliation":[{"name":"Shandong Railway Investment Holding Group Co., Ltd., Jinan 250014, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zixue","family":"Zhang","sequence":"additional","affiliation":[{"name":"Jiqing High Speed Railway Co., Ltd., Jinan 250014, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuefeng","family":"Tian","sequence":"additional","affiliation":[{"name":"Lunan High Speed Railway Co., Ltd., Jinan 250101, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Liangliang","family":"Zhou","sequence":"additional","affiliation":[{"name":"Lunan High Speed Railway Co., Ltd., Jinan 250101, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guanghua","family":"Hu","sequence":"additional","affiliation":[{"name":"Jiqing High Speed Railway Co., Ltd., Jinan 250014, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yunfei","family":"Yang","sequence":"additional","affiliation":[{"name":"Lunan High Speed Railway Co., Ltd., Jinan 250101, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7458-4729","authenticated-orcid":false,"given":"Jizhou","family":"Duan","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Baorong","family":"Hou","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Advanced Marine Materials, Key Laboratory of Marine Environmental Corrosion and Bio-Fouling, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2025,8,21]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Yang, H.-M. 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