caa a22 4500 463247906 CHVBK 20180405153331.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10086-006-0831-2 doi (NATIONALLICENCE)springer-10.1007/s10086-006-0831-2 Mechanical properties of wood in an unstable state due to temperature changes, and analysis of the relevant mechanism III: effect of quenching on stress relaxation of chemically modified woods [Elektronische Daten] [Yue Wang, Kazuya Minato, Ikuho Iida] In order to understand the mechanism of destabilization occurring when wood is quenched, we applied chemical modifications, and controlled the number of moisture adsorption sites in wood. The degree of destabilization was evaluated according to the fluidity (1-E t/E 0), increase in fluidity, and relative fluidity in relation to the nonmodified wood, and was discussed by comparing these quantities with the hygroscopicity or swelling of wood. We found that destabilization of chemically modified wood was lower than that in nonmodified wood, and the amount of adsorbed water controlled the magnitude of flow of wood. Moreover, according to the analysis of water state by the Hailwood-Horrobin equation, it was shown that the function of dissolved water to the fluidity is almost identical for both chemical modifications, whereas hydrated water has more effect on acetylated wood than on formaldehydetreated wood. We speculate that the motion of water molecules due to quenching accompanied with the redistribution of energy resulting from the exchange of their potential energy and movement to attain a new balance, and the introduced acetyl groups and cross-linking restrict the water molecule movement. The Japan Wood Research Society, 2006 Quenching nationallicence Chemically modified wood nationallicence Stress relaxation nationallicence Destabilization nationallicence Adsorbed water nationallicence Wang Yue Research Division of Agriculture, Graduate School of Kyoto Prefectural University, 606-8522, Kyoto, Japan aut Minato Kazuya Research Division of Agriculture, Graduate School of Kyoto Prefectural University, 606-8522, Kyoto, Japan aut Iida Ikuho Research Division of Agriculture, Graduate School of Kyoto Prefectural University, 606-8522, Kyoto, Japan aut Journal of Wood Science Springer-Verlag 53/2(2007-04-01), 94-99 1435-0211 53:2<94 2007 53 10086 https://doi.org/10.1007/s10086-006-0831-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10086-006-0831-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Yue Research Division of Agriculture, Graduate School of Kyoto Prefectural University, 606-8522, Kyoto, Japan aut NATIONALLICENCE 700 1- Minato Kazuya Research Division of Agriculture, Graduate School of Kyoto Prefectural University, 606-8522, Kyoto, Japan aut NATIONALLICENCE 700 1- Iida Ikuho Research Division of Agriculture, Graduate School of Kyoto Prefectural University, 606-8522, Kyoto, Japan aut NATIONALLICENCE 773 0- Journal of Wood Science Springer-Verlag 53/2(2007-04-01), 94-99 1435-0211 53:2<94 2007 53 10086 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 458148253 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer