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Supercritical impregnation of wood with siloxane
2012 - IRG/WP 12-30595
This paper describes the effect of supercritical impregnation with siloxane on the water repellency of Scots pine (Pinus sylvestris) sapwood samples. Samples were impregnated with a low amount of siloxane dissolved in supercritical carbon dioxide using isopropanol as a co-solvent. Siloxane retention (i.e. weight percent gain (WPG)) of the treated samples was 1.3 % (w/w) as found by mass balance. T...
A Kjellow, F Imsgard, J Fernandes, O Henriksen, E Klaassen, R Wagner, J Delis


Field performance of wood impregnated with siloxanes using supercritical carbon dioxide
2013 - IRG/WP 13-40632
This paper presents preliminary results from a 13-month field test containing pine sapwood samples (Pinus sylvestris) impregnated with a mixture of siloxane and organic biocides using supercritical carbon dioxide as carrier. Samples were exposed above ground at a Danish field test site using matched non-treated sapwood controls for every treated sample. All samples were painted before exposure. Pi...
A Kjellow, F Imsgard, J Fernandes, R Wagner, J Delis


Full-scale impregnation of wood with siloxane using supercritical carbon dioxide
2014 - IRG/WP 14-40659
Full-scale impregnation of wood with siloxane was carried out using supercritical carbon dioxide as solvent. A batch of 3530 kg of Scots pine sapwood was impregnated to a retention of approximately 1.3% siloxane. The treatment also consisted of a simultaneous impregnation with organic biocides. The performance of the wood was evaluated in terms of capillary water uptake according to a modified EN ...
A Kjellow, F Imsgard, J Fernandes, R Wagner, J Delis