Abstract
The revolutionary transformation of opaque wood into a transparent material, with combination of high optical transmittance and high haze, has gained widespread interest in the realms of advanced functional materials. However, the thickness of transparent wood composite (TWC) is limited to a few millimeters which restricts potential use. In this study, TWC were prepared using transverse sections of poplar (Populus deltoides) in thickness ranging from 1.5 to 15 mm by lignin modification bleaching followed by epoxy resin infiltration. The effects of bleaching duration as well as sample thickness on the optical properties of TWC were investigated. TWC was characterized using scanning electron microscopy and FTIR spectroscopy. The optical properties of TWC were measured using UV-VIS-NIR spectroscopy. The results indicated that light transmittance depended on severity of bleaching, lignin content and sample thickness.
Funding source: Department of Science and Technology, New Delhi
Award Identifier / Grant number: DST/INSPIRE Fellowship/[IF190269
Funding source: Indian Council of Forestry Research and Education, Dehradun
Award Identifier / Grant number: IWST/WSP/XI/174
Acknowledgments
The authors gratefully acknowledge support received from Dr. Harish C. Barshilia, Chief Scientist and Head, Surface Engineering Division, CSIR-National Aerospace Laboratories Bengaluru for useful discussion and his support.
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
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Research funding: This work was supported by Indian Council of Forestry Research and Education, Dehradun (grant no. IWST/WSP/XI/174). Priya Bisht expresses her sincere thanks to DST, New Delhi for financial support under DST Inspire fellowship (no. DST/INSPIRE Fellowship/[IF190269].
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Conflict of interest statement: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
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