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THE MECHANISM OF FAILURE OF CLEAR COATED WOODEN BOARDS AS REVEALED BY MICROSCOPY

In: IAWA Journal
Authors:
Adya P. Singh
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Bernard S.W. Dawson
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Online Publication Date:
01 Jan 2003
Free access

Regions of wood-coating interface from clear coated Pinus radiata boards were examined by a combination of light and transmission electron microscopy techniques after six months exposure outdoors in order to understand the mechanism of clear coating failure. The primary cause of coating failure was the separation of cells in the surface layers of wood underlying the coating that was caused mainly by the photodegradation of the middle lamella. These results are discussed in the light of known effects of solar radiation on lignin and other components of wood cell walls.

Title:
THE MECHANISM OF FAILURE OF CLEAR COATED WOODEN BOARDS AS REVEALED BY MICROSCOPY
Article Type:
Research Article
DOI:
https://doi.org/10.1163/22941932-90000316
Language:
English
Pages:
1–11
Keywords:
Pinus radiata wood; varnish; clear coatings; ultraviolet radiation; delignification; middle lamella; light microscopy; transmission electron microscopy
In:
IAWA Journal
In:
Volume 24: Issue 1
Publisher:
Brill
E-ISSN:
2294-1932
Print ISSN:
0928-1541
Subjects:
Botany, Biology

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