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Dimensional stability of wood modified by citric acid using different catalysts

Bogoslav Šefc ; Šumarski fakultet Sveučilišta u Zagrebu, Hrvatska
Jelena Trajković ; Šumarski fakultet Sveučilišta u Zagrebu, Hrvatska
Marin Hasan ; Šumarski fakultet Sveučilišta u Zagrebu, Hrvatska
Drago Katović ; Tekstilno-tehnološki fakultet Sveučilišta u Zagrebu, Hrvatska
Sandra Bischof Vukušić ; Tekstilno-tehnološki fakultet Sveučilišta u Zagrebu, Hrvatska
Martina Frančić ; Tekstilno-tehnološki fakultet Sveučilišta u Zagrebu, Hrvatska

Sažetak

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.

Ključne riječi

dimensional stability of wood; beech wood; fir wood; chemical modification; citric acid; NaH2PO2; NaH2PO4

Hrčak ID:

34519

URI

https://hrcak.srce.hr/34519

Datum izdavanja:

30.3.2009.

Podaci na drugim jezicima: hrvatski

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