Dimensional Stability of Plywood Panels Made from Thermally Modified Poplar Veneers

Authors:

Vladislav Zdravković, Aleksandar Lovrić, Bojana Stanković

Research subject and fields:

Sawmilling, hydrothermal treatment of wood, veneers and plywood Wood-based panels, composites, cellulose and paper

Keywords:

thermal modification; poplar veneer; plywood panels; dimensional stability; ASE

Abstract:

Some properties of plywood panels made from untreated and thermally modified (90 min. at 200 ºC) poplar veneers and their combinations have been analyzed. The change in equilibrium moisture content and the change in dimensions of the samples conditioned above water in closed containers were examined. The analysis using F-test (ANOVA) at the significance level of 95% confirmed that, regarding moisture content, all combinations of plywood panels differed significantly from the control panels. However, the analysis of thickness swelling showed that there was no significant difference among the plywood panels of similar construction. The highest values of anti-swelling efficiency were shown by plywood panels made from thermally modified veneers.

Dimensional Stability of Plywood Panels Made from Thermally Modified Poplar Veneers in the Conditions of Variable Air Humidity

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