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Studying thermal conductivity of wood at cell wall level by scanning thermal microscopy (SThM)
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Oliver Vay
,
Ulrich Müller
Published/Copyright:
September 14, 2012
Abstract
Local variability in the thermal conductivity of the cell wall of beech wood fibers was studied by means of scanning thermal microscopy (SThM). In the cross section, the thermal conductivity of the secondary cell wall was essentially higher than that of the compound middle lamella (CML). In sections parallel to the cell axis, the overall conductivity of the S1 layer was lower than that of the secondary cell wall, but the S2 layer and the CML showed similar conductivities. This is attributed to the orientation of the cellulose microfibrils playing a key role in the observed anisotropies concerning the thermal conductivity. The deviating thermal conductivities on different sections are attributed to the depth effect of the thermal scanning. SThM proves to be a technique with considerable potential for wood research.
Received: 2012-3-27
Accepted: 2012-8-9
Published Online: 2012-09-14
Published in Print: 2013-02-01
©2013 by Walter de Gruyter Berlin Boston
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- Studying thermal conductivity of wood at cell wall level by scanning thermal microscopy (SThM)
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- Meetings
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Articles in the same Issue
- Masthead
- Masthead
- Original Articles
- Behavior of xylans from Eucalyptus species. Part 1. The influence of structural features of eucalyptus xylans on their retention in kraft pulp
- Behavior of xylans from the Eucalyptus species. Part 2. Characterization of 4-O-methylglucuronoxylans isolated from black liquors of kraft pulping of Eucalyptus grandis and E. urophylla
- Convenient preparation of a β-O-4-type lignin model trimer via KOH-catalyzed hydroxymethylation and a new protection method
- Topochemistry of heat-treated and N-methylol melamine-modified wood of koto (Pterygota macrocarpa K. Schum.) and limba (Terminalia superba Engl. et. Diels)
- Enzymatic bleaching of eucalyptus kraft pulp: effects on the prebleaching filtrate, pulp quality and paper properties
- Compressive-torsion DMA of yellow-poplar wood in organic media
- Physiomechanical properties of ultra-lightweight foam core particleboard: different core densities
- Fractal dimension analysis of void size in wood-strand composites based on X-ray computer tomography images
- Sorption isotherms of thermally modified wood
- Hot water extracted wood fiber for production of wood plastic composites (WPCs)
- Generic failure mechanisms in adhesive bonds
- Climate response of cell characteristics in tree rings of Picea crassifolia
- Performance of wood treated with prospective organic surface protectants upon outdoor exposure: FTIR spectroscopic analysis of weathered surfaces
- Short Notes
- Studying thermal conductivity of wood at cell wall level by scanning thermal microscopy (SThM)
- Beech wood shrinkage observed at the micro-scale by a time series of X-ray computed tomographs (μXCT)
- Meetings
- Meetings
