Hydrogel filled Smart Windows for energy positive build Anurag Roy, Tapas K. Mallick and Asif Ali Tahir Environment and Sustainability Institute, Faculty of Environment, Science and Economy, University of Exeter, Penryn Campus, Cornwall TR10 9FE, UK The use of appropriate building materials to minimise the industry’s environmental impact has received increasing research attention. For material scientists, it is challenging to develop sustainable materials that reconcile both human development and climate change mitigation, yet do not compromise people’s well-being or environmental security. Presently, the comfort performance of window materials is reaching its storage and processing limit, causing a significant push to find smart materials that can be used in the next generation of the built environment. An innovative solution for sustainable glazing has established an understanding of pH-temperature-transparency modulation. This work uses hydroxypropyl cellulose and polyacrylic acid-based hydrogel as a rational energy stimulus for double-glazed windows, enriching a comfortable indoor daylight environment. Hydrogel maintains thermal comfort across various outdoor temperatures from 4 o C to 60 o C. The developed hydrogel-filled prototype glazing’s indoor thermal comfort performance and durability were analsyzed where hydrogel intermolecular gap and porosity play a pivotal role across various pHs [1] . References 1. J. Mater. Chem. C , 2022, 10 , 15474-15482
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