caa a22 4500 463247701 CHVBK 20180405153330.0 cr unu---uuuuu 170326e20071001xx s 000 0 eng 10.1007/s10086-006-0871-7 doi (NATIONALLICENCE)springer-10.1007/s10086-006-0871-7 Mechanical properties of wood in an unstable state due to temperature changes, and analysis of the relevant mechanism IV: effect of chemical components on destabilization of wood [Elektronische Daten] [Yue Wang, Ikuho Iida, Kazuya Minato] In order to investigate the effects of chemical components and matrix structure on the destabilization of quenched wood, we examined the physical and mechanical properties of steam-treated wood, hemicellulose-extracted wood, and delignified wood, which were treated at different levels. For steam-treated and hemicellulose-extracted wood,the relative relaxation modulus of the quenched sample was lower than that of the respective control sample. For delignified wood, the relative relaxation modulus fell with weight loss and reached a minimum value at a certain weight loss, and subsequently increased significantly. The hygroscopicity of all treated samples changed slightly by steaming, whereas increased with removing the component. More-over, the average volumetric swelling per 1% MC at 100% relative humidity (RH) was less than at 75% RH and 93% RH for component-removed wood. It was clear that a void structure existed. As a result, the destabilization evaluated by the fluidity (1 - E t/E 0) of steam-treated wood was influenced by the amount of adsorbed water. For component-removed wood, destabilization increased temporarily at lower weight loss because of nonuniform cohesive structure. At high weight loss, destabilization will decreased because capillary-condensed water gathered in the voids and obstructed the motion of adsorbed water. However, the destabilization of all treated wood changed less than that of chemically modified wood. The Japan Wood Research Society, 2007 Quenching nationallicence Chemical components nationallicence Stress relaxation nationallicence Destabilization nationallicence Wang Yue Research Division of Agriculture, Graduate School of Kyoto Prefectural University, 1-5 Shimogamo-hangicho, 606-8522, Sakyo-ku, Kyoto, Japan aut Iida Ikuho Research Division of Agriculture, Graduate School of Kyoto Prefectural University, 1-5 Shimogamo-hangicho, 606-8522, Sakyo-ku, Kyoto, Japan aut Minato Kazuya Research Division of Agriculture, Graduate School of Kyoto Prefectural University, 1-5 Shimogamo-hangicho, 606-8522, Sakyo-ku, Kyoto, Japan aut Journal of Wood Science Springer-Verlag 53/5(2007-10-01), 381-387 1435-0211 53:5<381 2007 53 10086 https://doi.org/10.1007/s10086-006-0871-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10086-006-0871-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Wang Yue Research Division of Agriculture, Graduate School of Kyoto Prefectural University, 1-5 Shimogamo-hangicho, 606-8522, Sakyo-ku, Kyoto, Japan aut NATIONALLICENCE 700 1- Iida Ikuho Research Division of Agriculture, Graduate School of Kyoto Prefectural University, 1-5 Shimogamo-hangicho, 606-8522, Sakyo-ku, Kyoto, Japan aut NATIONALLICENCE 700 1- Minato Kazuya Research Division of Agriculture, Graduate School of Kyoto Prefectural University, 1-5 Shimogamo-hangicho, 606-8522, Sakyo-ku, Kyoto, Japan aut NATIONALLICENCE 773 0- Journal of Wood Science Springer-Verlag 53/5(2007-10-01), 381-387 1435-0211 53:5<381 2007 53 10086 Metadata rights reserved Springer special CC-BY-NC licence nationallicence SWISSBIB 458148253 BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer