Sammanfattning

Scots pine samples were impregnated with epoxidized linseed oil (ELO) by means of a two-step process, and the effect of treatments has been studied concerning the Fourier transform infrared (FTIR) spectra, mechanical properties, moisture uptake, and field test performance. FTIR analysis of ELO-treated samples revealed that part of the ELO epoxy reactive group was chemically bound to the hydroxyl groups of wood. ELO-treated samples have improved dimensional stability, while the mechanical properties were slightly reduced and the moisture uptake was significantly lowered. The field performance of lap joints treated with ELO (90 kg m(-3)) after 60 months' exposure showed great improvements in performance, as the average annual moisture content (MC) was maintained at the level of 19.3% compared to 34.6% for lap joints treated with linseed oil (LO). The lap-joint area was not stained, and less discoloration by staining fungi on the external surfaces was observed in ELO-treated samples compared to samples treated with LO.

Nyckelord

epoxidized linseed oil; mechanical properties; modified wood; moisture uptake; Scots pine sapwood; SEM; two-step process of modification

Publicerad i

Holzforschung
2015, Volym: 69, nummer: 2, sidor: 179-186

SLU författare

• Jebrane, Mohamed

  • Institutionen för skogens produkter, Sveriges lantbruksuniversitet
    

• Fernández-Cano, Víctor

  • Institutionen för skogens produkter, Sveriges lantbruksuniversitet
    

• Terziev, Nasko

  • Institutionen för skogens produkter, Sveriges lantbruksuniversitet
    

• Daniel, Geoffrey

  • Institutionen för skogens produkter, Sveriges lantbruksuniversitet
    

UKÄ forskningsämne

Trävetenskap


Publikationens identifierare

DOI: https://doi.org/10.1515/hf-2014-0030

Permanent länk till denna sida (URI)

https://res.slu.se/id/publ/65010