{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,12]],"date-time":"2026-05-12T08:43:20Z","timestamp":1778575400013,"version":"3.51.4"},"reference-count":29,"publisher":"MDPI AG","issue":"3","license":[{"start":{"date-parts":[[2018,3,14]],"date-time":"2018-03-14T00:00:00Z","timestamp":1520985600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>Dual component microencapsulated hydrophobic amine and microencapsulated isocyanate were designed and fabricated for self-healing anti-corrosion coating. In this system, novel hydrophobic polyaspartic acid ester (PAE) and isophorone diisocyanate (IPDI) were microencapsulated respectively with melamine-formaldehyde (MF) as shell via in situ polymerization. To reduce the reaction activity between shell-forming MF prepolymer and PAE, another self-healing agent tung oil (TO) was dissolved in PAE and subsequently employed as core material. With field-emission scanning electron microscopy (FE-SEM) and optical microscopy (OM), the resultant microencapsulated IPDI with diameter of 2\u20135 \u03bcm showed a spherical shape and smooth surface. More importantly, both the morphology and microstructure of microencapsulated PAE enhanced significantly after addition of TO. Fourier transform infrared spectra (FTIR) analysis confirmed the molecular structure of chemical structure of the microcapsules. Thermal gravimetric analysis (TGA) indicated that both kinds of microcapsules exhibit excellent thermal resistance with the protection of MF shell. Furthermore, the self-healing epoxy coating system containing microencapsulated IPDI and microencapsulated PAE\/TO was prepared and investigated. From the micrographs of true color confocal microscope (TCCM), the self-healing coating containing dual-component microcapsules showed excellent self-repairing performance compared to single microencapsulated IPDI system, and the optimal content of dual-component microcapsules in epoxy coating was 20 wt % approximately.<\/jats:p>","DOI":"10.3390\/polym10030319","type":"journal-article","created":{"date-parts":[[2018,3,15]],"date-time":"2018-03-15T05:06:43Z","timestamp":1521090403000},"page":"319","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":49,"title":["Novel Dual-Component Microencapsulated Hydrophobic Amine and Microencapsulated Isocyanate Used for Self-Healing Anti-Corrosion Coating"],"prefix":"10.3390","volume":"10","author":[{"given":"Maolian","family":"Guo","sequence":"first","affiliation":[{"name":"State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9583-6828","authenticated-orcid":false,"given":"Wei","family":"Li","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China"},{"name":"Tianjin Colouroad Coatings & Chemicals Co., Ltd., Tianjin 300457, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Na","family":"Han","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jianping","family":"Wang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Junfeng","family":"Su","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Jianjie","family":"Li","sequence":"additional","affiliation":[{"name":"Tianjin Colouroad Coatings & Chemicals Co., Ltd., Tianjin 300457, China"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Xingxiang","family":"Zhang","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Key Laboratory of Advanced Fibers and Energy Storage, School of Material Science and Engineering, Tianjin Polytechnic University, Tianjin 300387, China"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2018,3,14]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"561","DOI":"10.1016\/j.corsci.2012.08.020","article-title":"Synthesis of organic silane microcapsules for self-healing corrosion resistant polymer coatings","volume":"65","author":"Huang","year":"2012","journal-title":"Corros. Sci."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"212","DOI":"10.1016\/j.porgcoat.2017.01.006","article-title":"Evaluation of corrosion performance of a self-healing epoxy-based coating containing linseed oil-filled microcapsules via electrochemical impedance spectroscopy","volume":"105","author":"Behzadnasab","year":"2017","journal-title":"Prog. Org. Coat."},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"50","DOI":"10.4028\/www.scientific.net\/AMR.233-235.50","article-title":"Study on performance of scale and corrosion inhibition of polyaspartic acid composite material","volume":"233\u2013235","author":"Liu","year":"2011","journal-title":"Adv. Mater. Res."},{"key":"ref_4","doi-asserted-by":"crossref","first-page":"33","DOI":"10.1016\/j.polymer.2016.03.044","article-title":"Water resistant reactive microcapsules for self-healing coatings in harsh environments","volume":"91","author":"Sun","year":"2016","journal-title":"Polymer"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"175","DOI":"10.1016\/j.progpolymsci.2015.07.002","article-title":"Self-healing polymeric materials based on microencapsulated healing agents: From design to preparation","volume":"49\u201350","author":"Zhu","year":"2015","journal-title":"Prog. Polym. Sci."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"794","DOI":"10.1038\/35057232","article-title":"Autonomic healing of polymer composites","volume":"409","author":"White","year":"2001","journal-title":"Nature"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"25546","DOI":"10.1021\/acsami.5b09121","article-title":"Photoresponsive self-healing polymer composite with photoabsorbing hybrid microcapsules","volume":"7","author":"Gao","year":"2015","journal-title":"ACS Appl. Mater. Interfaces"},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"121","DOI":"10.1016\/j.progpolymsci.2015.04.004","article-title":"Fifteen chemistries for autonomous external self-healing polymers and composites","volume":"49\u201350","author":"Hillewaere","year":"2015","journal-title":"Prog. Polym. Sci."},{"key":"ref_9","doi-asserted-by":"crossref","first-page":"34","DOI":"10.1016\/j.progpolymsci.2015.06.001","article-title":"Chemical and physical aspects of self-healing materials","volume":"49\u201350","author":"Yang","year":"2015","journal-title":"Prog. Polym. Sci."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"15","DOI":"10.1016\/j.compscitech.2016.11.004","article-title":"Facile and cost-effective synthesis of isocyanate microcapsules via polyvinyl alcohol-mediated interfacial polymerization and their application in self-healing materials","volume":"138","author":"He","year":"2017","journal-title":"Compos. Sci. Technol."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"776","DOI":"10.1039\/C2TA00612J","article-title":"Synthesis of isocyanate microcapsules and micromechanical behavior improvement of microcapsule shells by oxygen plasma treated carbon nanotubes","volume":"1","author":"Wang","year":"2013","journal-title":"J. Mater. Chem. A"},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"13749","DOI":"10.1039\/C5TA02288F","article-title":"Multilayer composite microcapsules synthesized by pickering emulsion templates and their application in self-healing coating","volume":"3","author":"Yi","year":"2015","journal-title":"J. Mater. Chem. A"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"11123","DOI":"10.1039\/c1jm10794a","article-title":"Facile microencapsulation of HDI for self-healing anticorrosion coatings","volume":"21","author":"Huang","year":"2011","journal-title":"J. Mater. Chem."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"4435","DOI":"10.1039\/C4TA05339G","article-title":"Double-layered reactive microcapsules with excellent thermal and non-polar solvent resistance for self-healing coatings","volume":"3","author":"Sun","year":"2015","journal-title":"J. Mater. Chem. A"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"6751","DOI":"10.1002\/adfm.201401473","article-title":"A versatile approach towards multifunctional robust microcapsules with tunable, restorable, and solvent-proof superhydrophobicity for self-healing and self-cleaning coatings","volume":"24","author":"Wu","year":"2014","journal-title":"Adv. Funct. Mater."},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"1159","DOI":"10.1039\/C4PY01448K","article-title":"Efficient microencapsulation of a liquid isocyanate with in situ shell functionalization","volume":"6","author":"Nguyen","year":"2015","journal-title":"Polym. Chem."},{"key":"ref_17","doi-asserted-by":"crossref","unstructured":"Ma, Y., Jiang, Y., Tan, H., Zhang, Y., and Gu, J. (2017). A rapid and efficient route to preparation of isocyanate microcapsules. Polymers, 9.","DOI":"10.3390\/polym9070274"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"9650","DOI":"10.1021\/ma801718v","article-title":"Microencapsulation of isocyanates for self-healing polymers","volume":"41","author":"Yang","year":"2008","journal-title":"Macromolecules"},{"key":"ref_19","doi-asserted-by":"crossref","first-page":"277","DOI":"10.1016\/j.compstruct.2013.09.023","article-title":"Recovery and improvement in low-velocity impact properties of e-glass\/epoxy composites through novel self-healing technique","volume":"108","author":"Zainuddin","year":"2014","journal-title":"Compos. Struct."},{"key":"ref_20","doi-asserted-by":"crossref","first-page":"282","DOI":"10.1002\/adma.201303179","article-title":"Thermally stable autonomic healing in epoxy using a dual-microcapsule system","volume":"26","author":"Jin","year":"2014","journal-title":"Adv. Mater."},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"4231","DOI":"10.1016\/j.polymer.2012.07.021","article-title":"Microvascular based self-healing polymeric foam","volume":"53","author":"Patrick","year":"2012","journal-title":"Polymer"},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"5575","DOI":"10.1002\/adfm.201400580","article-title":"Autonomous self-healing of epoxy thermosets with thiol-isocyanate chemistry","volume":"24","author":"Hillewaere","year":"2014","journal-title":"Adv. Funct. Mater."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"23","DOI":"10.1016\/j.compscitech.2014.01.009","article-title":"Self-healing epoxy via epoxy\u2013amine chemistry in dual hollow glass bubbles","volume":"94","author":"Zhang","year":"2014","journal-title":"Compos. Sci. Technol."},{"key":"ref_24","doi-asserted-by":"crossref","first-page":"51","DOI":"10.1016\/j.compscitech.2016.07.022","article-title":"Pickering emulsion-based fabrication of epoxy and amine microcapsules for dual core self-healing coating","volume":"133","author":"Yi","year":"2016","journal-title":"Compos. Sci. Technol."},{"key":"ref_25","doi-asserted-by":"crossref","first-page":"297","DOI":"10.4028\/www.scientific.net\/AMR.842.297","article-title":"The Synthesis of a Polyaspartic Acid Ester and Development of the Coatings","volume":"842","author":"Liu","year":"2013","journal-title":"Adv. Mater. Res"},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"261","DOI":"10.1007\/s11705-007-0047-z","article-title":"Synergistic scale inhibition of polyaspartic acid composite with magnetic field","volume":"1","author":"Liu","year":"2007","journal-title":"Front. Chem. Eng. China"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"3955","DOI":"10.1021\/acssuschemeng.6b03142","article-title":"Self-healing coatings for steel-reinforced concrete","volume":"5","author":"Chen","year":"2017","journal-title":"ACS Sustain. Chem. Eng."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"14696","DOI":"10.1039\/C7NJ02864D","article-title":"Microstructure regulation of microencapsulated bio-based n-dodecanol as phase change material by in-situ polymerization","volume":"41","author":"Zhang","year":"2017","journal-title":"New J. Chem."},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"2495","DOI":"10.1021\/am302963d","article-title":"Versatile fabrication of nanocomposite microcapsules with controlled shell thickness and low permeability","volume":"5","author":"Yang","year":"2013","journal-title":"ACS Appl. Mater. 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