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논문 기본 정보

자료유형
학술저널
저자정보
Hidayat, Wahyu (College of Forest and Environmental Sciences, Kangwon National University) Qi, Yue (College of Forest and Environmental Sciences, Kangwon National University) Jang, Jae Hyuk (College of Forest and Environmental Sciences, Kangwon National University) Park, Byung Ho (College of Design and Sports, Kangwon National University) Banuwa, Irwan Sukri (Department of Forestry, Faculty of Agriculture, Lampung University) Febrianto, Fauzi (Department of Forest Products, Faculty of Forestry, Bogor Agricultural University) Kim, Nam Hun (College of Forest and Environmental Sciences, Kangwon National University)
저널정보
한국목재공학회 목재공학(Journal of the Korean Wood Science and Technology) 목재공학 제45권 제2호
발행연도
2017.1
수록면
213 - 222 (10page)

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Heat treatment of wood is an attractive alternative environmentally-friendly treatment to add value of less valuable woods by improving color, dimensional stability, and natural durability. To improve the color properties of Korean white pine (Pinus koraiensis) and royal paulownia (Pauwlonia tomentosa), we treated the woods at $160^{\circ}C$, $180^{\circ}C$, $200^{\circ}C$, and $220^{\circ}C$ for 2 hours. Color change after heat treatment was evaluated using the CIE-Lab color system and survey was conducted to determine the consumer preferences towards color of heat-treated wood. Lightness ($L^*$) decreased with increasing temperature and the higher degree of change was obtained in royal paulownia. The red/green chromaticity ($a^*$) in both wood decreased after heat treatment at $160^{\circ}C$, and constantly increased after heat treatment at $180^{\circ}C$ to $220^{\circ}C$. Yellow/blue chromaticity ($b^*$) in Korean white pine tended to increase after heat treatment at $160^{\circ}C$, then decreased gradually afterwards. In royal paulownia, $b^*$ values linearly increased with increasing temperature. Overall color change (${\Delta}E^*$) increased with increasing temperature with higher degree obtained in royal paulownia. Samples with the clamps in both wood species showed lower degree of the change in $L^*$, $a^*$, b and ${\Delta}E^*$. The results of the consumer preferences test showed that the darker colors of heat-treated woods were more preferred by consumers compared to the lighter colors of untreated woods. Consequently, heat treatment could enhance the color properties of Korean white pine and royal paulownia woods for value added products.

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