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Towards centimeter thick transparent wood through interface manipulation
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Biocomposites. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0002-1591-5815
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology, Biocomposites. KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0002-1336-5119
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Fibre- and Polymer Technology.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Centres, Wallenberg Wood Science Center.ORCID iD: 0000-0003-1161-9311
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2018 (English)In: International Journal of Materials and Chemistry, ISSN 2166-5346, E-ISSN 2166-5354, Vol. 6, p. 1094-1101Article in journal (Refereed) Published
Abstract [en]

Transparent wood is an attractive structural material for energy-saving buildings due to its high optical transmittance, good thermal insulation, and high toughness. However, thick highly transparent wood is challenging to realize. In the current work, highly transparent wood (1.5 mm) with a transmittance of 92%, close to that of pure PMMA (95%), is demonstrated. The high transmittance was realized by interface manipulation through acetylation of wood template. Both experiments and electromagnetic modeling support that the improved transmittance is mainly due to elimination of interface debonding gap. By applying this method, a centimeter-thick transparent wood structure was obtained. The transparent wood could be used as a substrate for an optically tunable window by laminating a polymer dispersed liquid crystal (PDLC) film on top. The techniques demonstrated are a step towards the replacement of glass in smart windows and smart buildings.

Place, publisher, year, edition, pages
2018. Vol. 6, p. 1094-1101
National Category
Composite Science and Engineering
Identifiers
URN: urn:nbn:se:kth:diva-273235DOI: 10.1039/c7ta09973hISI: 000422949700040Scopus ID: 2-s2.0-85040915327OAI: oai:DiVA.org:kth-273235DiVA, id: diva2:1429605
Funder
EU, European Research Council, 742733
Note

QC 20200515

Available from: 2020-05-12 Created: 2020-05-12 Last updated: 2020-05-15Bibliographically approved

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Li, YuanyuanYang, XuanFu, QiliangRojas, RamiroYan, MaxBerglund, Lars

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