Water State Study of Wood Structure of Four Hardwoods Below Fiber Saturation Point with Nuclear Magnetic Resonance

Authors

  • Leandro Passarini
  • Cédric Malveau
  • Roger E. Hernández

Keywords:

Nuclear magnetic resonance, T<sub>2</sub> relaxation, water state, water-wood relations, fiber saturation point

Abstract

Nuclear magnetic resonance (NMR) is a useful, powerful, and noninvasive technique to study the dynamics of wood-water relations, both quantitatively and qualitatively. The main objective of this study was to use NMR to characterize the state of water below the FSP. Two tropical hardwood species, huayruro (Robinia coccinea Aublet) and cachimbo (Cariniana domesticata [C. Martius] Miers), a plantation-grown eucalyptus species (Eucalyptus saligna Smith), and a temperate species, red oak (Quercus rubra L.), were studied. These species were chosen for their diversity in terms of anatomical and physical properties. Desorption tests were carried out at 21°C in a single-step procedure from full saturation state for huayruro, cachimbo, and red oak and from green condition for E. saligna. Discrete T2 times were obtained for each species and equilibrium moisture content (EMC). The results showed that even under EMC, there was a region in the hygroscopic range in which the loss of bound water takes place before all liquid water was drained. This region varies according to wood species. Furthermore, variation in the fast T2 values among the different wood species gives an indication of how bound water is distributed and arranged in sorption sites.

References

Almeida G, Gagné S, Hernández RE (2007) A NMR study of water distribution in hardwoods at several equilibrium moisture contents. Wood Sci Technol 41(4):293-307.nAlmeida G, Hernández RE (2006a) Changes in physical properties of tropical and temperate hardwoods below and above the fiber saturation point. Wood Sci Technol 40(7):599-613.nAlmeida G, Hernández RE (2006b) Changes in physical properties of yellow birch below and above the fiber saturation point. Wood Fiber Sci 38(1):74-83.nAlmeida G, Hernández RE (2007) Influence of the pore structure of wood on moisture desorption at high relative humidities. Wood Mater Sci Eng 2(1):33-44.nAraujo CD, Avramidis S, MacKay AL (1994) Behaviour of solid wood and bound water as a function of moisture content: A proton magnetic resonance study. Holzforschung 48(1):69-74.nAraujo CD, MacKay AL, Hailey JRT, Whittall KP, Le H (1992) Proton magnetic resonance techniques for characterization of water in wood: Application to white spruce. Wood Sci Technol 26(2):101-113.nAraujo CD, MacKay AL, Whittall KP, Hailey JRT (1993) A diffusion model for spin-spin relaxation of compartmentalized water in wood. J Magn Reson B 101(3):248-261.nBabiak M, Kúdela J (1995) A contribution to the definition of the fiber saturation point. Wood Sci Technol 29(3):217-226.nBarkas WW (1935) Fibre saturation point of wood. Nature 135(3414):545.nBrownstein KR (1980) Diffusion as an explanation of observed NMR behavior of water absorbed on wood. J Magn Reson 40(3):505-510.nBrownstein KR, Tarr CE (1979) Importance of classical diffusion in NMR studies of water in biological cells. Phys Rev A 19(6):2446-2453.nBucur V (2003) Techniques for high resolution imaging of wood structure: A review. Meas Sci Technol 14(12):R91-R98.nCox J, McDonald PJ, Gardiner PA (2010) A study of water exchange in wood by means of 2D NMR relaxation correlation and exchange. Holzforschung 64(2):259-266.nDraper NR, Smith H (1998) Applied regression analysis. Wiley, New York, NY. 706 pp.nElder T, Houtman C (2013) Time-domain NMR study of the drying of hemicellulose extracted aspen (Populus tremuloides Michx.). Holzforschung 67(4):405-411.nFlibotte S, Menon RS, MacKay AL, Hailey JRT (1990) Proton magnetic resonance of western red cedar. Wood Fiber Sci 22(4):362-376.nHartley ID, Avramidis S (1993) Analysis of the wood sorption isotherm using clustering theory. Holzforschung 47(2):163-167.nHartley ID, Avramidis S, MacKay AL (1996) H-NMR studies of water interactions in sitka spruce and western hemlock: Moisture content determination and second moments. Wood Sci Technol 30(2):141-148.nHartley ID, Kamke FA, Peemoeller H (1992) Cluster theory for water sorption in wood. Wood Sci Technol 26(2):83-99.nHernández RE (2007) Moisture sorption properties of hardwoods as affected by extraneous substances, wood density, and interlocked grain. Wood Fiber Sci 39(1):132-145.nHernández RE, Bizoň M (1994) Changes in shrinkage and tangential compression strength of sugar maple below and above the fiber saturation point. Wood Fiber Sci 26(3):360-369.nHernández RE, Cáceres CB (2010) Magnetic resonance microimaging of liquid water distribution in sugar maple wood below fiber saturation point. Wood Fiber Sci 42(3):259-272.nHernández RE, Pontin M (2006) Shrinkage of three tropical hardwoods below and above the fiber saturation point. Wood Fiber Sci 38(3):474-483.nHoffmeyer P, Engelund ET, Thygesen LG (2011) Equilibrium moisture content (EMC) in Norway spruce during the first and second desorptions. Holzforschung 65(6):875-882.nHsi E, Hossfeld R, Bryant RG (1977) Nuclear magnetic resonance relaxation study of water absorbed on milled Northern white cedar. J Colloid Interface Sci 62(3):389-395.nKastler B (2011) Comprendre l'IRM: Manuel d'autoapprentissage. Masson, Paris, France. 389 pp.nMenon RS, MacKay AL, Hailey JRT, Bloom M, Burgess AE, Swanson JS (1987) An NMR determination of the physiological water distribution in wood during drying. J Appl Polym Sci 33(4):1141-1155.nNaderi N, Hernández RE (1997) Effect of a re-wetting treatment on the dimensional changes of sugar maple wood. Wood Fiber Sci 29(4):340-344.nNavi P, Heger F (2005) Comportement thermohydromécanique du bois. Presses Polytechniques et Universitaires Romandes, Suisse. 298 pp.nNzokou P, Kamdem DP (2004) Influence of wood extractives on moisture sorption and wettability of red oak (Quercus rubra), black cherry (Prunus serotina), and red pine (Pinus resinosa). Wood Fiber Sci 36(4):483-492.nRawat SPS, Khali DP (1998) Clustering of water molecules during adsorption of water in wood. J Polym Sci Pol Phys 36:665-671.nReich HJ (2013) Relaxation in NMR spectroscopy. University of Wisconsin, Madison, WI. http://www.chem.wisc.edu/areas/reich/nmr/08-tech-01-relax.htm (8 November 2013). http://www.chem.wisc.edu/areas/reich/nmr/08-tech-01-relax.htm'>http://www.chem.wisc.edu/areas/reich/nmr/08-tech-01-relax.htmnRoss RJ, Brashaw BK, Pellerin RF (1998) Nondestructive evaluation of wood. Forest Prod J 48(1):14-19.nSiau JF (1984) Transport processes in wood. Springer-Verlag, Berlin, Germany, New York, NY. 245 pp.nSiau JF (1995) Wood: Influence of moisture on physical properties. Virginia Tech, Blacksburg, VA. 227 pp.nSkaar C (1988) Wood-water relations. Springer-Verlag, Berlin, Germany, New York, NY. 283 pp.nStamm AJ (1964) Wood and cellulose science. Ronald Press, New York, NY. 549 pp.nStamm AJ (1971) Review of nine methods for determining the fiber saturation points of wood and wood products. Wood Sci 4(2):114-128.nStone JE, Scallan AM (1967) The effect of component removal upon the porous structure of the cell wall of wood II. Swelling in water and the fiber saturation point. Tappi 50(10):496-501.nThygesen LG, Elder T (2008) Moisture in untreated, acetylated, and furfurylated Norway spruce studied during drying using time domain NMR. Wood Fiber Sci 40(3):309-320.nThygesen LG, Elder T (2009) Moisture in untreated, acetylated, and furfurylated Norway spruce monitored during drying below fiber saturation using time domain NMR. Wood Fiber Sci 40(3):309-320.nTiemann HD (1906) Effect of moisture upon the strength and stiffness of wood. Bull 70. USDA For Serv, Government Printing Office, Washington, DC. 144 pp.nWheeler EA (1982) Ultrastructural characteristics of red maple (Acer rubrum L.) wood. Wood Fiber Sci 14(1):43-53.nWhittall KP, MacKay AL (1989) Quantitative interpretation of NMR relaxation data. J Magn Reson 84(1):134-153.nZhang M, Wang X, Gazo R (2013) Water states in yellow poplar during drying studied by time-domain nuclear magnetic resonance. Wood Fiber Sci 45(4):423-428.n

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2014-10-06

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Research Contributions