Moisture sorption and swelling of Norway spruce [Picea abies (L.) Karst.] impregnated with linseed oil

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Abstract

The moisture sorption and swelling of spruce specimens impregnated with linseed oil and unimpregnated controls were studied in two sorption experiments: from 0 to 55% relative humidity (RH) and from 55% RH to water saturation. Sorption isotherms were also determined using a sorption balance. The impregnated specimens had lower rates of both moisture sorption and swelling than the unimpregnated controls; however, there was no significant difference in final moisture contents. In addition, the linseed oil impregnation did not improve the dimensional stability of the wood; in most cases the specimens impregnated with linseed oil swelled more than the unimpregnated controls. For the impregnated specimens, reductions in swelling rates were in most cases seen without corresponding reductions in final swelling. The moisture sorption rate was reduced for the impregnated specimens but there were generally no reductions in equilibrium moisture content.

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Subject classification (UKÄ) – MANDATORY

  • Materials Engineering

Keywords

  • Dimensional stability, impregnation, linseed oil, moisture sorption, Picea abies, wood
Original languageEnglish
Pages (from-to)135-142
JournalWood Material Science & Engineering
Volume5
Issue number3 & 4
StatePublished - 2010
Peer-reviewedYes