Affiliation:
1. Department of Fibre and Polymer Technology Wallenberg Wood Science Center KTH Royal Institute of Technology Teknikringen 56 Stockholm 100 44 Sweden
2. IVL Swedish Environmental Research Institute Gothenburg 400 14 Sweden
Abstract
AbstractThe sustainable development of functional energy‐saving building materials is important for reducing thermal energy consumption and promoting natural indoor lighting. Phase‐change materials embedded in wood‐based materials are candidates for thermal energy storage. However, the renewable resource content is usually insufficient, the energy storage and mechanical properties are poor, and the sustainability aspect is unexplored. Here a novel fully bio‐based transparent wood (TW) biocomposite for thermal energy storage, combining excellent heat storage properties, tunable optical transmittance, and mechanical performance is introduced. A bio‐based matrix based on a synthesized limonene acrylate monomer and renewable 1‐dodecanol is impregnated and in situ polymerized within mesoporous wood substrates. The TW demonstrates high latent heat (89 J g−1) exceeding commercial gypsum panels, combined with thermo‐responsive optical transmittance (up to 86%) and mechanical strength up to 86 MPa. The life cycle assessment shows that the bio‐based TW has a 39% lower environmental impact than transparent polycarbonate panels. The bio‐based TW holds great potential as scalable and sustainable transparent heat storage solution.
Funder
European Research Council
Knut och Alice Wallenbergs Stiftelse
Subject
Biomaterials,Biotechnology,General Materials Science,General Chemistry
Cited by
8 articles.
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