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

https://hrcak.srce.hr/34519

Publication date:

30.3.2009.

Article data in other languages: croatian

Visits: 2.745 *