A comparative study of dewatering of Pinus radiata sapwood using supercritical CO2 and conventional forced air-drying via in situ magnetic resonance microimaging (MRI)

作者：Meder Roger^*; Franich Robert A; Callaghan Paul T; Behr Volker C

来源：Holzforschung, 2015, 69(9): 1137-1142.

DOI：10.1515/hf-2014-0134

• air-drying
• carbon dioxide
• dewatering
• magnetic resonance imaging
• Pinus radiata
• supercritical fluid

A comparison of moisture loss from Pinus radiata sapwood by conventional forced air-drying and a novel supercritical carbon dioxide (scCO(2)) dewatering process has been examined in situ using magnetic resonance microimaging. Air-drying results in the nonuniform removal of moisture within the wood volume, leading to a dry core and wet perimeter where water evaporated, whereas the scCO(2) dewatering process resulted in moisture expulsion more uniformly throughout the volume of the specimen, especially so within the earlywood.

• 出版日期2015-11