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http://dx.doi.org/10.5658/WOOD.2010.38.3.191

Optimization of Bleaching Conditions for Stain Removal in Japanese Hackberry (Celtis sinensis Persoon) Using Response Surface Methodology  

Kim, Sung-Hwan (Department of Interior Materials Engineering, College of Sciences and Engineering, Jinju National University)
Ra, Jong-Bum (Department of Interior Materials Engineering, College of Sciences and Engineering, Jinju National University)
Publication Information
Journal of the Korean Wood Science and Technology / v.38, no.3, 2010 , pp. 191-198 More about this Journal
Abstract
This research was performed to investigate the effect of hydrogen peroxide on the stain removal in japanese hackberry. Response surface method (RSM) was used to optimize the bleaching conditions such as reaction temperature, reaction time and the concentration of hydrogen peroxide. Fifteen different bleaching conditions were selected according to $2^3$ factorial central composite design (CCD). The bleaching effect were evaluated by lightness differences of wood surface before and after the bleaching. The RSM model was determined and its $R^2$ values were 0.93, showing it well represented the bleaching effect. The most affecting factor on the stain removal was the concentration of hydrogen peroxide, followed by reaction time and reaction temperature. Second degree of concentration was proved to have an effect on the bleaching. Bleaching rates above 3% concentrations of hydrogen peroxide were tended to be slightly decreased, and low bleaching effect was found at $20^{\circ}C$. The determined RSM model may offer very practical ways to obtain the desired levels of bleaching because it offers multiple solutions.
Keywords
stain removal; response surface method; hydrogen peroxide; bleaching;
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Times Cited By KSCI : 1  (Citation Analysis)
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