Affiliation:
1. Kangwon National University
Abstract
Abstract
The effect of NaClO2 bleaching temperature on the properties of epoxy-resin (ER) transparent wood (TW) and ER/lignin-TW for ultraviolet-shielding (UV-shielding) window applications is investigated. Higher bleaching temperatures result in greater lignin removal and TW transmittance, with a reduced TW UV-shielding functionality. To enhance the UV shielding in TW while maintaining transmittance, bleached wood is impregnated with an ER/lignin combination to produce UV-shielding TW, which was compared with three glass-window types to demonstrate UV-shielding efficiency. The results show that a 12 mm thick glass door, double-layered glass windows, and 2 mm glass windows transmit significant UV radiation (220–250 µW/cm2, 260–270 µW/cm2, and 810–820 µW/cm2, respectively). In contrast, ER-TW and ER/lignin-TW provide 80–99% and 100% UV-shielding, respectively, across all UV-radiation regions. A 2-mm-thick ER-TW and ER/lignin–TW demonstrated excellent potential for UV-shielding window applications compared to regular glass windows.
Publisher
Research Square Platform LLC
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