{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,28]],"date-time":"2026-08-28T17:32:22Z","timestamp":1787938342508,"version":"build-2784847793"},"reference-count":38,"publisher":"MDPI AG","issue":"14","license":[{"start":{"date-parts":[[2023,7,10]],"date-time":"2023-07-10T00:00:00Z","timestamp":1688947200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Open Fund of Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province","award":["JBGS009"],"award-info":[{"award-number":["JBGS009"]}]},{"name":"Open Fund of Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province","award":["2022KFJJ04"],"award-info":[{"award-number":["2022KFJJ04"]}]},{"name":"Key Laboratory of Plant Fiber Functional Materials, National Forestry and Grassland Administration","award":["JBGS009"],"award-info":[{"award-number":["JBGS009"]}]},{"name":"Key Laboratory of Plant Fiber Functional Materials, National Forestry and Grassland Administration","award":["2022KFJJ04"],"award-info":[{"award-number":["2022KFJJ04"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Polymers"],"abstract":"<jats:p>To develop monoammonium phosphate (MAP) as a novel acid source for durable intumescent fire retardants (IFR), MAP microcapsules (MCMAPs) containing MAP as the internal core and melamine-formaldehyde (MF) as the external shell were prepared by in situ polymerization in this study. The influences of synthesis conditions (including reaction temperature, polymerization time, and reaction pH value) on the properties of obtained MCMAPs (MAP content, yield, morphologies, and thermal properties) were then investigated systematically. The morphologies, chemical structures, and thermal properties were characterized by optical microscopy, scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), Fourier transform infrared (FTIR) spectroscopy, and thermogravimetry analyzer (TGA). The results show that MAP was well encapsulated by MF resin. No microcapsules are obtained at &lt;55 \u00b0C or with polymerization times &lt;1 h. Optimal preparation conditions of reaction temperature, polymerization time, and reaction pH value are 75 \u00b0C, 3 h, and 5.5, respectively. Those results provide process reference and theoretical basis for preparing MCMAPs and could promote the application of MAP microcapsules in wood flame-retardant materials.<\/jats:p>","DOI":"10.3390\/polym15142991","type":"journal-article","created":{"date-parts":[[2023,7,10]],"date-time":"2023-07-10T00:47:35Z","timestamp":1688950055000},"page":"2991","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":11,"title":["Effects of Processing Conditions on the Properties of Monoammonium Phosphate Microcapsules with Melamine-Formaldehyde Resin Shell"],"prefix":"10.3390","volume":"15","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9901-3474","authenticated-orcid":false,"given":"Shenjie","family":"Han","sequence":"first","affiliation":[{"name":"Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng 224051, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2324-0501","authenticated-orcid":false,"given":"Jingpeng","family":"Li","sequence":"additional","affiliation":[{"name":"Key Laboratory of High Efficient Processing of Bamboo of Zhejiang Province, China National Bamboo Research Center, Hangzhou 310012, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qingyun","family":"Ding","sequence":"additional","affiliation":[{"name":"College of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jian","family":"Zang","sequence":"additional","affiliation":[{"name":"College of Materials Science and Engineering, Yancheng Institute of Technology, Yancheng 224051, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yulian","family":"Lu","sequence":"additional","affiliation":[{"name":"School of Chemistry and Chemical Engineering, Yancheng Institute of Technology, Yancheng 224051, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Longfei","family":"Zhang","sequence":"additional","affiliation":[{"name":"Key Laboratory of Wood Science and Technology of State Forestry Administration, Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100091, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"La","family":"Hu","sequence":"additional","affiliation":[{"name":"Guangxi Key Laboratory of Superior Timber Trees Resource Cultivation, Engineering Research Center of Masson Pine of State Forestry Administration, Guangxi Forestry Research Institute, Nanning 530002, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2023,7,10]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"100687","DOI":"10.1016\/j.pmatsci.2020.100687","article-title":"Flame retardant polymeric nanocomposites through the combination of nanomaterials and conventional flame retardants","volume":"114","author":"He","year":"2020","journal-title":"Prog. 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