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<p class="MsoNormal" style="text-align:justify"><span lang="EN-GB">Personal thermal management by controllingradiation energies of body and sun can be used in all environments andcontributes to sustainability components with the advantages of energy saving, lowchemical usage and comfort enhancements under dynamic conditions. In thisstudy, passive radiative heating nanocomposite films were produced by usingsodium alginate as matrix and zinc oxide (ZnO) and aluminium oxide (Al<sub>2</sub>O<sub>3</sub>)nanoparticles as nanofiller having far infrared radiation reflecting, hencepassive heating functions. Nanocomposite films including 20% sodium alginatepowder, deionized water, 20% of ZnO and Al<sub>2</sub>O<sub>3</sub>nanoparticles and surfactant was stirred by magnetic and ultrasonic stirrers inturn. Films produced within petri dishes after drying at room temperature wereanalysed by FT-IR and SEM for chemical structure and morphological analysis,respectively. Emissivity ratios giving idea about the heating performances ofthe films were determined with IR camera (Fluke Ti100 Thermal Imager), heatedplate, and data logger system. Also, heating performance was measured by a testsystem including far infrared lamp, thermal camera and temperature sensors. Resultsshow that emissivity of the films increased by around 18% with the selectednanoparticles. The heating performance obtained in the nanocomposite film formmay not only be used for the products where heating is necessary such assurgical gowns, knitted/woven clothing, but also for cosmetic/medicalapplications (beauty masks, wound dress, etc.) enabling skin care/healing. <o:p></o:p></span></p> |
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