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      Transparent Wood for Thermal Energy Storage and Reversible Optical Transmittance

      , , , ,
      ACS Applied Materials & Interfaces
      American Chemical Society (ACS)

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          Abstract

          Functional load-bearing materials based on phase-change materials (PCMs) are under rapid development for thermal energy storage (TES) applications. Mesoporous structures are ideal carriers for PCMs and guarantee shape stability during the thermal cycle. In this study, we introduce transparent wood (TW) as a TES system. A shape-stabilized PCM based on polyethylene glycol is encapsulated into a delignified wood substrate, and the TW obtained is fully characterized, also in terms of nano- and mesoscale structures. Transparent wood for thermal energy storage (TW-TES) combines large latent heat (∼76 J g–1) with switchable optical transparency. During the heating process, optical transmittance increases by 6% and reaches 68% for 1.5 mm thick TW-TES. Characterization of the thermal energy regulation performance shows that the prepared TW-TES composite is superior to normal glass because of the combination of good heat-storage and thermal insulation properties. This makes TW-TES composites interesting candidates for applications in energy-saving buildings.

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          Nature’s hierarchical materials

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            Phase change materials for thermal energy storage

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              Highly Anisotropic, Highly Transparent Wood Composites

              For the first time, two types of highly anisotropic, highly transparent wood composites are demonstrated by taking advantage of the macro-structures in original wood. These wood composites are highly transparent with a total transmittance up to 90% but exhibit dramatically different optical and mechanical properties.
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                Author and article information

                Journal
                ACS Applied Materials & Interfaces
                ACS Appl. Mater. Interfaces
                American Chemical Society (ACS)
                1944-8244
                1944-8252
                May 07 2019
                May 07 2019
                Article
                10.1021/acsami.9b05525
                fd099a7c-4201-45f6-8a1e-ed7a8bd90cdb
                © 2019
                History

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