Document Detail

Determination of moisture fraction in wood by mobile NMR device.
MedLine Citation:
PMID:  15546765     Owner:  NLM     Status:  PubMed-not-MEDLINE    
A mobile NMR probe has been used as a non-destructive and non-invasive tool for water content analysis on wood samples. The porosity index, express as the fraction of the sensitivity volume of the probe occupied by water, is here proposed as an alternative to the moisture content index, namely the amount of water mass with respect to the mass of dried sample. In principle the method can be applied to any kind of porous media that has not detectable proton signal from the rigid matrix as, for instance, in building materials. In wood, where proton signal can be detected also from cellulose and others macromolecular components, some considerations and artifices are here proposed for eliminating this contribution. The method has allowed performing moisture volume fraction analysis on wood samples characterized by different wood species, cutting and moisture contents. The NMR data of moisture detection as volume fraction have successfully been compared with those obtained by the gravimetric method.
C Casieri; L Senni; M Romagnoli; U Santamaria; F De Luca
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Journal of magnetic resonance (San Diego, Calif. : 1997)     Volume:  171     ISSN:  1090-7807     ISO Abbreviation:  J. Magn. Reson.     Publication Date:  2004 Dec 
Date Detail:
Created Date:  2004-11-19     Completed Date:  2006-08-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9707935     Medline TA:  J Magn Reson     Country:  United States    
Other Details:
Languages:  eng     Pagination:  364-72     Citation Subset:  -    
INFM-CRS SOFT and Dipartimento di Fisica, Università di L'Aquila, V. Vetoio 10, I-67010 Coppito, L'Aquila, Italy.
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