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1 Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

1 2018

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Water absorption process in the thermo-mechanically modified iroko and tauari wood

Laskowska A., Wyszyńska J., Zbieć M.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2018

No. 104

496--503

The purpose of the study was to determine the impact of thermo-mechanical treatment on absorption and absorption speed of iroko (Milicia exelsa (Welw.) C.C. Berg) and tauari (Couratari spp.) wood. Wood was densified in a hydraulic press in the radial direction at 100 oC and 150 oC. The modification temperature had greater impact on the density of tauari wood than on the density of iroko wood. Water absorption process depended on the wood species, the type of material (non-densified, densified), densification temperature. Iroko wood was characterized by a greater dynamic of changes in water absorption over time than tauari wood. The densified tauari wood at the maximum saturation had lower moisture content than the non-densified tauari wood. Speed of water absorption in thermo-mechanically modified wood was lower than in non-densified wood, especially noticeable in the first 30 seconds of soaking.