caa a22 4500 463216784 CHVBK 20180405153159.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s00226-006-0111-8 doi (NATIONALLICENCE)springer-10.1007/s00226-006-0111-8 Effects of previous solvent exchange on acetylation of wood [Elektronische Daten] [Eiichi Obataya, Kazuya Minato] Wood specimens were prepared in a swollen state using solvent exchange (PS) treatment. The swollen wood specimens were acetylated using acetic anhydride by heating at 80-120°C. At the beginning of heating, the weight percent gain (WPG) of PS-treated wood was greater than that of conventionally acetylated wood. This acceleration effect of the PS treatment was explained by the introduction of treating reagent into the wood polymers where the intermolecular hydrogen bonds were previously broken. On the other hand, the PS treatment had no influence on the final WPG and moisture sorption characteristics of acetylated wood. This indicated that the intrinsic reactivity of wood constituents was unaffected by the PS treatment. The acetylation of PS-treated wood produced greater bulking and slightly higher dimensional stability than that in the case of conventional acetylation at the same WPG. It was speculated that the expansion of cell lumina due to the PS treatment resulted in greater bulking on acetylation and lesser swelling of acetylated wood with moisture sorption. Springer-Verlag, 2006 Obataya Eiichi Graduate School of Life and Environmental Sciences, University of Tsukuba, 305-8572, Ibaraki, Japan aut Minato Kazuya Graduate School of Agriculture, Kyoto Prefectural University, 606-8522, Kyoto, Japan aut Wood Science and Technology Springer-Verlag 41/4(2007-04-01), 351-360 0043-7719 41:4<351 2007 41 226 https://doi.org/10.1007/s00226-006-0111-8 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00226-006-0111-8 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Obataya Eiichi Graduate School of Life and Environmental Sciences, University of Tsukuba, 305-8572, Ibaraki, Japan aut NATIONALLICENCE 700 1- Minato Kazuya Graduate School of Agriculture, Kyoto Prefectural University, 606-8522, Kyoto, Japan aut NATIONALLICENCE 773 0- Wood Science and Technology Springer-Verlag 41/4(2007-04-01), 351-360 0043-7719 41:4<351 2007 41 226 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer