Research article, 2008
Decay resistance of wood treated with amino-silicone compounds
Weigenand O, Humar M, Daniel G, Militz H, Mai CAbstract
An amino-silicone (AS; amino-polydimethylsiloxane) micro-emulsion was tested for its suitability to preserve wood against basidiomycetes in a mini-block experiment and in a test according to the European standard (1996) EN 113. Decay resistance was assessed against the white rot fungi Trametes versicolor, Ceriporiopsis subvermispora, and Hypoxylon fragiforme, as well as the brown rot fungi Coniophora puteana, Antrodia vaillantii, Gloeophyllum trabeum and Serpula lacrymans. Pine sapwood and beech wood were treated with AS emulsions at solute concentration levels of 2%, 5% and 15%. The mini-blocks treated with 15% concentrations of AS resisted decay by T versicolor and C. puteana over a long time (12 weeks), while samples treated with low and moderate concentrations underwent considerable mass losses. Accordingly, microscopic studies revealed a high degree of colonisation by the white rot fungus and loss of cell wall integrity (brown rot) in samples treated with 2% AS. At high AS content (15%), no or only initial stages of decay could be observed. In the European standard (1996) test EN 113, the mass loss in all fungal cultures except for the white rot ascomycete H. fragiforme was below 5%, when the samples were treated with 15% AS. The effect of low and moderate AS concentration on the decay resistance was dependent on the fungal strain. The mode of action of AS treatment against basidiomycete decay is discussedPublished in
Holzforschung2008, volume: 62, number: 1, pages: 112-118
Publisher: WALTER DE GRUYTER & CO
Authors' information
Humar, Miha
Mai, Carsten
Militz, Holger
Weigenand, Oliver
UKÄ Subject classification
Forest Science
Publication Identifiers
DOI: https://doi.org/10.1515/HF.2008.016
URI (permanent link to this page)
https://res.slu.se/id/publ/16344