Supercritical fluid (SCF) treatment: Its effect on bending strength and stiffness of ponderosa pine sapwood Public Deposited

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  • Adverse effects on mechanical properties from using a supercritical fluid (SCF) to increase preservative penetration of refractory woods were evaluated by treating small ponderosa pine sapwood specimens with supercritical carbon dioxide at 64 combinations of temperatures (35 to 80 C), pressure (1,000 to 4,000 psig), and time (0.5 to 2 h). Thereafter, the treated and identical untreated specimens were equilibrated to constant moisture content and tested for bending strength and stiffness. The SCF-treated and untreated specimens were not significantly different in modulus of rupture (MOR) or modulus of elasticity (MOE). Temperature, pressure, and time had no significant effect on MOR; there were interacting effects of these variables on MOE, although these interactions had no meaningful patterns.
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  • Smith, Susan M., E. Sahle Demessie, Jeffrey J. Morrell, Keith L. Levien, and Harry Ng. 1993. Supercritical fluid (SCF) treatment: Its effect on bending strength and stiffness of ponderosa pine sapwood. Wood and Fiber Science, 25(2): 119-123.
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  • description.provenance : Submitted by Caryn Davis (caryn.davis@oregonstate.edu) on 2010-02-05T19:23:50Z No. of bitstreams: 1 supercritical fluid scf treatment.pdf: 475374 bytes, checksum: 23f3ff6027b6d72a8421c59835cd54a4 (MD5)
  • description.provenance : Made available in DSpace on 2010-02-11T14:26:01Z (GMT). No. of bitstreams: 1 supercritical fluid scf treatment.pdf: 475374 bytes, checksum: 23f3ff6027b6d72a8421c59835cd54a4 (MD5) Previous issue date: 1993-04
  • description.provenance : Approved for entry into archive by Linda Kathman(linda.kathman@oregonstate.edu) on 2010-02-11T14:26:01Z (GMT) No. of bitstreams: 1 supercritical fluid scf treatment.pdf: 475374 bytes, checksum: 23f3ff6027b6d72a8421c59835cd54a4 (MD5)

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