Photodegradation of Natural Wood Veneer and Studies on Its Color Stabilization for Automotive Interior Materials |
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| Authors: | Se-Yeong Park Chang-Young Hong Seon-Hong Kim June-Ho Choi Ohkyung Kwon |
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| Affiliation: | 1. Department of Forest Sciences College of Agriculture and Life Sciences, Seoul National University, Seoul, Republic of Korea;2. Department of Forest Biomaterials College of Natural Resources, North Carolina State University, Raleigh, NC, USA;3. Ingredient Business Unit, Ingredient Research Department 1, Research &4. Technology Division, DAESANG, Icheon-si, Republic of Korea;5. National Instrumentation Center for Environmental Management, Seoul National University, Seoul, Republic of Korea |
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| Abstract: | The aim of this study was to investigate the color and chemical changes of natural wood veneers after ultraviolet (UV) exposure for automotive interior materials. To control the photodegradation, chemical treatments with hydrogen peroxide (H2O2) and sodium hypochlorite (NaClO) solution were applied to the veneer under different concentration conditions. The veneers treated with H2O2 showed strong color changes on the surface after the UV test. On the other hand, the veneers treated with NaClO solution (2–3% concentration) showed excellent color stability compared to the untreated veneer because NaClO partially removed lignin compounds on the veneer surface. NaClO can improve the color stability by destroying the lignin structures. However, 3% NaClO condition was seen to cause surface damage although this treatment condition had the best effect on photoprotection. Therefore, treatment with 2% NaClO was the best condition in this study for against color change and photodegradation caused by UV light. |
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| Keywords: | Wood veneer photodegradation lignin chromophore photoprotection sodium hypochlorite |
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