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Mechanism of water adsorption capacity change of bamboo by heating |
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| Authors: | Yoshimi Ohmae Yukie Saito Masafumi Inoue Takato Nakano |
| Affiliation: | 1. Asian Natural Environmental Science Center, The University of Tokyo, Bunkyou-ku Yayoi 1-1-1, 113-8657, Tokyo, Japan 2. Graduate School of Agriculture and Life Sciences, The University of Tokyo, Bunkyou-ku Yayoi 1-1-1, 113-8657, Tokyo, Japan 3. Laboratory of Biomaterials Design, Division of Forest and Biomaterials Science, Graduate School of Agriculture, Kyoto University, Kita-Shirakawa, 606-8502, Kyoto, Japan |
| Abstract: | The water adsorption capacity of moso bamboo (Phyllostachys pubescens) heated at 200 °C in air for various times was examined. The samples were subsequently placed in various humidities at 20 °C to obtain relevant isotherms. They were analyzed using the Hailwood and Horrobin theory, derived for hydrophilic macromolecules, and the Dubinin and Radushkevich theory, previously used to describe the behavior of microporous carbons. The results show that the water adsorption capacities of the samples changed after heating for 2 to 5 hrs, and imply that over this time the number of hydroxyl groups decreased markedly while the number of micropores formed increased. |
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