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Polyvinyl alcohol/propylene glycol facilitates reversible thermochromism of passive energy-saving flexible wood films at low (brightness) to high (depth) temperatures.

RSC Adv

November 2023

State Key Laboratory of Featured Metal Materials and Life-Cycle Safety for Composite Structures, MOE Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, and School of Resources, Environment and Materials, Guangxi University Nanning 530004 China

Article Synopsis
  • Reversible thermochromism can be improved with a new type of flexible wood film (FT-PCMs-2) that incorporates polyvinyl alcohol/propylene glycol (PVA/PG) for better energy storage.
  • The FT-PCMs-2 changes color more effectively when heated compared to traditional non-flexible composites, showcasing enhanced flexibility, mechanical strength, and thermal stability.
  • Specific samples, MSR-DEW-6PVA and MSG-DEW-6PVA, exhibit optimal phase change temperatures, high latent heat values, and promising properties for applications in energy-saving buildings and smart windows.
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