Journal
WOOD MATERIAL SCIENCE & ENGINEERING
Volume 4, Issue 1-2, Pages 46-51Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/17480270903151233
Keywords
Cell wall damage; micromorphology; modified wood; SEM; UV laser
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Funding
- EcoBuild Institute Excellence Centre
- The Knowledge Foundation
- Swedish Foundation for Strategic Research
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The objective of this paper is to demonstrate an ultraviolet (UV) laser ablation technique as a tool for sample preparation in microscopy studies of modified wood. Improved techniques for studying the microstructure of modified wood are crucial for a deeper understanding of many of their physical, mechanical and durability properties. The surface preparation technique is described in this paper. An illustration of micrographs of the micromorphology and polymer distribution in some examples of modified wood is also presented. It is clearly demonstrated that in contrast to conventional surface preparation techniques used for light microscopy and scanning electron microscopy, i.e. razor blade and microtome cutting techniques, UV laser ablation does not introduce any mechanically induced microcracks and redistribution of polymers or other mobile substances in the prepared surface. Results also show that, in particular, this technique seems to be suitable for studying polymer distribution in resin-impregnated wood, as well as detection of microcracks in modified wood cell walls.
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