caa a22 4500 463247469 CHVBK 20180405153330.0 cr unu---uuuuu 170326e20070601xx s 000 0 eng 10.1007/s10086-006-0841-0 doi (NATIONALLICENCE)springer-10.1007/s10086-006-0841-0 Effects of heat treatment on brittleness of Styrax tonkinensis wood [Elektronische Daten] [Le Phuong, Satoshi Shida, Yukie Saito] A new approach is proposed for the evaluation of the brittleness of heat-treated Styrax tonkinensis wood. Heat treatment made wood more brittle when wood was heated at a higher temperature or for a longer time. The brittleness increased to four times that of the control when wood was heated at 200°C for 12 h. For treatment at 160°C, the increase in brittleness without any change in weight is thought to be possibly caused by the relocation of lignin molecules. At higher temperatures, loss of amorphous polysaccharides due to degradation is thought to become the main factor affecting brittleness. The crystallites that were newly formed after 2 h of treatment showed brittleness that was different from that of the inherent crystallites remaining after 12 h of heat treatment. This inherent crystalline cellulose possibly plays a role in brittleness. There is also the possibility of using color to predict the brittleness of heat-treated wood. The Japan Wood Research Society, 2006 Heat treatment nationallicence Brittleness nationallicence Crystallinity nationallicence Lignin nationallicence Color nationallicence Phuong Le Biomaterial Sciences Department, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, 113-8657, Bunkyo-ku, Tokyo, Japan aut Shida Satoshi Biomaterial Sciences Department, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, 113-8657, Bunkyo-ku, Tokyo, Japan aut Saito Yukie Biomaterial Sciences Department, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, 113-8657, Bunkyo-ku, Tokyo, Japan aut Journal of Wood Science Springer-Verlag 53/3(2007-06-01), 181-186 1435-0211 53:3<181 2007 53 10086 https://doi.org/10.1007/s10086-006-0841-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10086-006-0841-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Phuong Le Biomaterial Sciences Department, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, 113-8657, Bunkyo-ku, Tokyo, Japan aut NATIONALLICENCE 700 1- Shida Satoshi Biomaterial Sciences Department, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, 113-8657, Bunkyo-ku, Tokyo, Japan aut NATIONALLICENCE 700 1- Saito Yukie Biomaterial Sciences Department, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, 113-8657, Bunkyo-ku, Tokyo, Japan aut NATIONALLICENCE 773 0- Journal of Wood Science Springer-Verlag 53/3(2007-06-01), 181-186 1435-0211 53:3<181 2007 53 10086 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer