Gas Permeability of Plantation Loblolly Pine


  • Michael R. Milota
  • John L. Tschernitz
  • Steve P. Verrill
  • Theodore Mianowski


Permeability, loblolly pine, solvent-dry, air-dry, juvenile wood, mature wood


Gas permeability of loblolly pine sapwood was determined for samples from six plantation-grown trees. Longitudinal permeability measurements were made on wood from five heights in the trees, juvenile and mature wood, and earlywood and latewood. Samples were either solvent-dried to obtain a green-equivalent state or air-dried. Permeability was also measured in the tangential and radial directions. Longitudinal permeability was significantly less in the lower part of the tree than in the upper part. Mature wood was more permeable than juvenile wood for both green-equivalent and air-dried wood as well as earlywood and latewood. Permeability did not appear to be solely a function of specific gravity.


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