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Effect of quat- and amino-silicones on fungal colonisation and decay of wood
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Shyamal C. Ghosh
Published/Copyright:
July 5, 2012
Abstract
Scots pine (Pinus sylvestris L.) and European beech (Fagus sylvatica L.) wood samples treated with quaternary (quat)- and amino-silicone (QS and AS) solutions of different chain lengths were tested against brown-rot and white-rot fungi as well as with regard to blue stain colonisation. The treatment with short-chained silicones bearing quat and amino functional group reduced the mass loss (ML) by decay fungi at 15% treatment concentration. The release of metabolic heat by decayed samples determined in a microcalorimeter corresponded with the ML of the samples, i.e., samples with high ML produced more heat indicating higher fungal activity. Short-chain ASs reduced the blue staining more strongly than long-chain ones. However, the opposite was true in the case of QS. It was assumed that the combined effect of hydrophobation, cell wall bulking and change of the wood surface energy are responsible for a successful performance of silicone compounds as wood preservatives.
Received: 2012-2-16
Accepted: 2012-5-30
Published Online: 2012-07-05
Published in Print: 2012-12-01
©2012 by Walter de Gruyter Berlin Boston
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Keywords for this article
amino-silicone;
blue stain;
brown rot;
microcalorimetry;
quat-silicone;
white rot
Articles in the same Issue
- Masthead
- Masthead
- Original Papers
- Proposed supramolecular structure of lignin in softwood tracheid compound middle lamella regions
- Degradation products of lignocellulosics in pulp mill effluents – comparison and evaluation of different gas chromatographic techniques for a comprehensive analysis
- Analysis of DCM extractable components from hot-pressed hybrid poplar
- Pretreatment of softwood dissolving pulp with ionic liquids
- Probing the chemical and surface chemical modification of vessel cell walls during bleaching of eucalyptus pulp
- Chemotaxonomical identification of Holocenic bogwood recovered after 2007 Niigataken Chuestsu-oki Earthquake
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