Measurement of cell wall penetration in wood of water-based chemicals using SEM/EDS and STEM/EDS technique

Summary The penetration of bulking chemicals (glycerol, PEG 200, PEG 1500 and pentaerythritol) into the cell wall of wood, Pinus sylvestris, has been studied. A number of different methods for determining the distribution of chemicals in the cell wall were used. Measurements of the increase in cell...

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Bibliographic Details
Published in:Wood science and technology 1999-04, Vol.33 (2), p.111-122
Main Authors: WALLSTRÖM, L, LINDBERG, K. A. H
Format: Article
Language:English
Subjects:
Applied sciences
Cell walls
Chemicals
Drying
Exact sciences and technology
Glycerol
Microcracks
Organic chemistry
Penetration
Pine trees
Polymer industry, paints, wood
Polymera konstruktionsmaterial
Polymeric Composite Materials
Wall thickness
Wood-based materials
Wood. Paper. Non wovens
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Summary:Summary The penetration of bulking chemicals (glycerol, PEG 200, PEG 1500 and pentaerythritol) into the cell wall of wood, Pinus sylvestris, has been studied. A number of different methods for determining the distribution of chemicals in the cell wall were used. Measurements of the increase in cell wall thickness showed that glycerol and PEG 200 resulted in greater cell wall bulking compared to PEG 1500 and pentaerythritol.Examination with SEM/EDS-linescan confirmed these results. However, the better resolution possible with the STEM/EDS-linescan revealed an inhomogenous distribution of the chemical in the cell wall. This is believed to be due to microcracks in the cell wall which are the result of the initial drying of the wood. This general damage to the cell wall could be the reason for the failure to find a stabilizing chemical and method.
ISSN:0043-7719
1432-5225
1432-5225
DOI:10.1007/s002260050103