Investigation on physical properties and fiber dimensions of tension wood and normal wood in beech (Fagus orientalis)
2009
Taramian, A., Members of Scientific Board of Natural Resources Faculty, University of Tehran | Faezipour, M., Members of Scientific Board of Natural Resources Faculty, University of Tehran | Karimi, A.N., Members of Scientific Board of Natural Resources Faculty, University of Tehran | Parsapajouh, D., Members of Scientific Board of Natural Resources Faculty, University of Tehran | Moezipour, A., Members of Scientific Board of Natural Resources Faculty, University of Tehran
Because of importance of physical properties and fiber dimensions of wood in different industries, particularly in paper making and fiberboard ones, these properties of normal wood and tension wood in beech (Fagus orientalis) were studied.The results showed that the basic density and green moisture content of tension wood were higher than those of normal wood. Tension wood in longitudinal direction shrinks and swells higher than normal wood. It presented higher fiber efficiency than the normal wood. The tension wood fibers had greater length and wall thickness, and lower total diameter and cell cavity in comparison with those of normal wood. The calculation of fiber dimensions ratios revealed that the slenderness and runkel ratios of tension wood were greater than those of normal wood, whereas the flexibility coefficient of the normal wood fibers was found to be higher. Based on the results, for optimum using of this species, the technical characteristics of the tension wood should be considered.
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