Author:
Cox Julia,McDonald Peter J.,Gardiner Barry A.
Abstract
Abstract
Two-dimensional T
1-T
2
1H NMR relaxation correlation spectra and T
2-T
2 relaxation exchange spectra for samples of spruce wood across the full moisture content range from 0% to >100% are presented. The T
1-T
2 spectra unambiguously identify water in different environments within the wood that overlap in the corresponding and more traditional one-dimensional T
1 or T
2 experiment. The T
2-T
2 spectra unambiguously reveal the presence of water exchange between the lumen and cell wall above the fibre saturation point in sapwood. An estimate is made of the exchange rate: 1/30 to 1/3 ms-1.
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85 articles.
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