Drvna industrija, Vol. 60 No. 1, 2009.
Original scientific paper
Dimensional stability of wood modified by citric acid using different catalysts
Bogoslav Šefc
; Faculty of Forestry, University of Zagreb, Croatia
Jelena Trajković
; Faculty of Forestry, University of Zagreb, Croatia
Marin Hasan
; Faculty of Forestry, University of Zagreb, Croatia
Drago Katović
; Faculty of Textile Technology, University of Zagreb
Sandra Bischof Vukušić
; Faculty of Textile Technology, University of Zagreb
Martina Frančić
; Faculty of Textile Technology, University of Zagreb
Abstract
Small wooden samples of fir (Abies alba Mill.) and beech (Fagus sylvatica L.) were chemically modified by citric acid (CA) as non-formaldehyde cross-linking system reagent and cured by convection heating at three different temperature regimes. Two different CA solutions were used, one with NaH2PO2 and the other with NaH2PO4 as a catalyst. The dimensional stability of the modified wood was determined by the anti-swelling efficiency (ASE) using the water soak/oven dry method. Almost equally large improvement of dimensional stability of wood was attained using NaH2PO4 as when NaH2PO2 was applied as a catalyst.
Keywords
dimensional stability of wood; beech wood; fir wood; chemical modification; citric acid; NaH2PO2; NaH2PO4
Hrčak ID:
34519
URI
Publication date:
30.3.2009.
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