What is the role of the accessibility of wood hydroxyl groups in controlling moisture content?
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It has often been claimed that the equilibrium moisture content (EMC) of wood is controlled by the available hydroxyl group content and their accessibility, but this has not been proven. In the present study, the accessibility of the hydroxyl groups were analysed by deuterium exchange in a dynamic vapour sorption apparatus, and generally poor correlation with the EMC and hydroxyl group accessibility was found. Therefore, the role of the accessibility of wood hydroxyl groups in relation to exerting sole influence on the EMC is disputable. It is concluded that there has to be an additional mechanism to exercise control over the EMC in addition to hydroxyl group accessibility.
KeywordsLignin Hemicellulose Sorption Isotherm Equilibrium Moisture Content Crystallinity Index
- 1.Skaar C (1972) Water in wood. Syracuse University Press, New YorkGoogle Scholar
- 2.Rowell RM (1980) Wood Sci 13:102Google Scholar
- 10.Laivins GV, Scallan AM (1993) Products of papermaking. Transactions of the 10th fundamental research symposium. Pira International, Oxford, p 1235Google Scholar
- 21.Jalaludin Z, Hill CAS, Xie Y, Samsi HW, Husain H, Awang K, Curling SF (2010) J Mater Sci Eng 5:194Google Scholar
- 24.Tappi standard (2000) T 204 cm-97, Solvent extractives of wood and pulp. TAPPI, Atlanta, GAGoogle Scholar
- 25.Wise LE, Murphy M, D’Addieco AA (1946) Pap Trade J 122:35Google Scholar
- 26.Tappi standard (1994) T 203 om-93, Alpha-, Beta- and Gamma-cellulose in pulp. TAPPI, Atlanta, GAGoogle Scholar
- 27.Tappi standard (1994) T 222 om-88, Acid-insoluble lignin in wood and pulp. TAPPI, Atlanta, GAGoogle Scholar
- 30.Dwianto W, Takana F, Inoue M, Norimoto M (1996) Wood Res 83:47Google Scholar