{"title":"Preparation and characterization of PFMP@GE microcapsules for enhancing the safety of UV-curable polymers","authors":"","doi":"10.1016/j.reactfunctpolym.2024.106042","DOIUrl":null,"url":null,"abstract":"<div><p>Fire hazards associated with UV-curable polymers have limited their broader application. This study aims to develop efficient and environmentally friendly safety strategies for UV-curable polymers. Microcapsules were synthesized via simple coacervation, using perfluoro(2-methyl-3-pentanone) (PFMP) as the core and gelatin (GE) as the wall material. PFMP@GE microcapsules were then incorporated into UV-curable resin prepolymer to produce a UV-curable resin board with active fire-extinguishing capabilities. The microcapsules' morphology, chemical composition, and thermal stability of the microcapsules were analyzed, along with the safety performance of the UV-curable resin board containing PFMP@GE microcapsules in confined spaces with sustained combustion. The morphology, chemical composition, and thermal stability results indicate that the microcapsules, synthesized under emulsification conditions (5 min of shearing at 8000 rpm and a 2.0 % <em>w</em>/<em>v</em> ratio of sodium dodecyl benzene sulfonate (SDBS) to core material), have a spherical core-shell structure. The wall material provides a cavity space that stably encapsulates the core material. Fire tests in confined spaces demonstrated that the heat-responsive PFMP@GE microcapsules in the UV-curable resin released PFMP under fire conditions, with changes in smoke gas concentrations and temperature further verifying that the flames were effectively extinguished. The core material's synergistic fire-extinguishing mechanism of the core material imparts active safety features to the UV-curable resin.</p></div>","PeriodicalId":20916,"journal":{"name":"Reactive & Functional Polymers","volume":null,"pages":null},"PeriodicalIF":4.5000,"publicationDate":"2024-09-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Reactive & Functional Polymers","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1381514824002177","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, APPLIED","Score":null,"Total":0}
引用次数: 0
Abstract
Fire hazards associated with UV-curable polymers have limited their broader application. This study aims to develop efficient and environmentally friendly safety strategies for UV-curable polymers. Microcapsules were synthesized via simple coacervation, using perfluoro(2-methyl-3-pentanone) (PFMP) as the core and gelatin (GE) as the wall material. PFMP@GE microcapsules were then incorporated into UV-curable resin prepolymer to produce a UV-curable resin board with active fire-extinguishing capabilities. The microcapsules' morphology, chemical composition, and thermal stability of the microcapsules were analyzed, along with the safety performance of the UV-curable resin board containing PFMP@GE microcapsules in confined spaces with sustained combustion. The morphology, chemical composition, and thermal stability results indicate that the microcapsules, synthesized under emulsification conditions (5 min of shearing at 8000 rpm and a 2.0 % w/v ratio of sodium dodecyl benzene sulfonate (SDBS) to core material), have a spherical core-shell structure. The wall material provides a cavity space that stably encapsulates the core material. Fire tests in confined spaces demonstrated that the heat-responsive PFMP@GE microcapsules in the UV-curable resin released PFMP under fire conditions, with changes in smoke gas concentrations and temperature further verifying that the flames were effectively extinguished. The core material's synergistic fire-extinguishing mechanism of the core material imparts active safety features to the UV-curable resin.
期刊介绍:
Reactive & Functional Polymers provides a forum to disseminate original ideas, concepts and developments in the science and technology of polymers with functional groups, which impart specific chemical reactivity or physical, chemical, structural, biological, and pharmacological functionality. The scope covers organic polymers, acting for instance as reagents, catalysts, templates, ion-exchangers, selective sorbents, chelating or antimicrobial agents, drug carriers, sensors, membranes, and hydrogels. This also includes reactive cross-linkable prepolymers and high-performance thermosetting polymers, natural or degradable polymers, conducting polymers, and porous polymers.
Original research articles must contain thorough molecular and material characterization data on synthesis of the above polymers in combination with their applications. Applications include but are not limited to catalysis, water or effluent treatment, separations and recovery, electronics and information storage, energy conversion, encapsulation, or adhesion.