Kim, Chae Bin You, Nam-Ho Goh, Munju 2024-01-19T23:04:40Z 2024-01-19T23:04:40Z 2021-09-03 2018-03 2046-2069 https://pubs.kist.re.kr/handle/201004/121634 We herein report a facile and scalable approach to manufacturing optically transparent and heat-insulating films by incorporating hollow poly(methyl methacrylate) microcapsules into a transparent polymeric matrix. The microcapsule was prepared via emulsion polymerization. The size of the microcapsules could be easily controlled from similar to 1 to 3 mu m by varying the polymerization time in a narrow size distribution. The microcapsules were then mixed with a UV-curable transparent Liquid resin and cured by a subsequent Light irradiation. The current approach couLd enhance the thermaL barrier property of the films without a significant reduction in the optical transparency. The solid film possessing 30 wt% microcapsules, for example, exhibited a high visible Light transmittance (similar to 80% as measured by UV-vis spectroscopy) and the thermal conductivity was reduced to 0.06 W mK(-1), corresponding to 46% of the capsule free film. To quantify and verify this result, theoretical models describing a heat transfer in a hollow microsphere composite were used, and the model showed a good agreement with our experimental observations. English ROYAL SOC CHEMISTRY LDPE-MATRIX COMPOSITES POLYELECTROLYTE MICROCAPSULES ELECTROOPTICAL PROPERTIES DIELECTRIC-PROPERTIES THERMAL-CONDUCTIVITY SILICA AEROGEL MICROENCAPSULATION MICROSPHERES RELEASE SPHERES Hollow polymer microcapsule embedded transparent and heat-insulating film Article 10.1039/c8ra00801a 1 RSC ADVANCES, v.8, no.17, pp.9480 - 9486 RSC ADVANCES 8 17 9480 9486 scie scopus 000431972600054 Chemistry, Multidisciplinary Chemistry Article LDPE-MATRIX COMPOSITES POLYELECTROLYTE MICROCAPSULES ELECTROOPTICAL PROPERTIES DIELECTRIC-PROPERTIES THERMAL-CONDUCTIVITY SILICA AEROGEL MICROENCAPSULATION MICROSPHERES RELEASE SPHERES microcapsule heat-insulating film transparent film composite