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

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Holzforschung, 69 (9): 1137-1142 (ноября 2015)
DOI: 10.1515/hf-2014-0134

Аннотация

A comparison of moisture loss from Pinus radiata sapwood by conventional forced air-drying and a novel supercritical carbon dioxide (scCO2) 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 scCO2 dewatering process resulted in moisture expulsion more uniformly throughout the volume of the specimen, especially so within the earlywood.

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