Erratum to: 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 |
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| Authors: | Yue Wang Kazuya Minato Ikuho Iida |
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| Institution: | (1) Research Division of Agriculture, Graduate School of Kyoto Prefectural University, Kyoto 606-8522, Japan |
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| Abstract: | 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.
An erratum to this article is available at . |
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| Keywords: | Quenching Chemically modified wood Stress relaxation Destabilization Adsorbed water |
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