Water adsorption process of bamboo heated at low temperature |
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| Authors: | Yoshimi Ohmae Yukie Saito Masafumi Inoue Takato Nakano |
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| Affiliation: | (1) Asian Natural Environmental Science Center, The University of Tokyo, Tokyo 113-8657, Japan;(2) Graduate School of Agriculture and Life Sciences, The University of Tokyo, Tokyo 113-8657, Japan;(3) Laboratory of Biomaterials Design, Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kyoto University, Oiwake-cho, Kita-Shirakawa, Sakyo-ku, Kyoto 606-8502, Japan |
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| Abstract: | Water adsorption capacities were evaluated for moso bamboo samples that were heated at 200°C for various times and conditioned in a closed container at 97% relative humidity at 20°C. Logistic regression analysis was used for curve fitting to the adsorption data and its parameters were analyzed. These parameters were compared with those derived previously from the Dubinin and Radushkevich theory. The properties of the heat-treated samples changed after 5 h of heating. With less than 5 h of heating, hydroxyl groups provided the main adsorption sites but their numbers decreased on heating. After 5 h, gasifi cation of the bamboo increased and capillaries formed. Part of this article was presented at the 57th Annual Meeting of the Japan Wood Research Society, Hiroshima, August 2007 |
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| Keywords: | Water adsorption Adsorption process Heated bamboo Logistic regression analysis Dubinin and Radushkevich theory |
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