Comprehending The Results Of DRYING METHODS ON WOOD MECHANICAL Qualities AT ULTRA AND CELLULAR LEVELS

Pierre Blanchet, Alizera Kaboorani Kaboorani, Cecilia Bustos

Conventional kiln and vacuum drying are generally utilized in industry to dry wood. Within this research, an effort is made to build up a much better knowledge of the results of both drying methods around the mechanical qualities of wood in the ultra-structure and cellular structure levels. Dynamic mechanical analysis (DMA) and nanoindentation (NI) were utilised along with standard static bending tests based on ASTM D143 to evaluate the particular results of both drying methods around the performance of yellow birch (Betula alleghaniensis Brit.) wood, an essential species within the Canadian wood industry. Measurements of equilibrium moisture content (EMC) at different relative humidity (RH) levels demonstrated that vacuum drying consistently produced greater EMC values. Vacuum-dried wood also exhibited superior MOE and MOR performance. Tests conducted by DMA shown the chemical structure of wood had gone through more changes during conventional kiln drying than during vacuum drying. The elastic modulus and hardness measured through the nanoindentation technique says the outcome of wood drying could be detected in the cell wall level too. The outcomes of the study demonstrated the perfect attention ought to be compensated towards the results of specific drying methods around the chemical structure of wood, because the chemical changes occurring within the kiln effect on the caliber of the ultimate products.

yellow birch wood, mechanical qualities, drying method, nanoindentation(NI), dynamic mechanical analysis (DMA), yellow birch

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