Abstract

Equilibrium moisture content (EMC), mechanical properties, and durability of Scots pine (Pinus sylvestris L.) sapwood modified by vinyl acetate epoxidized linseed oil (WVA-ELO) have been studied. Microscopic observations revealed that the impregnated copolymer is mainly in cell walls, rays, resin canals, and a small fraction in the cell lumens. Under the same climate conditioning, the EMC of the treated wood was in the range of 6.0%-8.2%, which was significantly lower than that of untreated wood (about 12%). Mechanical tests performed on paired samples (control and treated) showed a slight reduction on the mechanical properties of WVA-ELO. The decay resistance against basidiomycete fungi of WVA-ELO was significantly improved as demonstrated by laboratory tests. It was found that 8% weight percentage gain (WPG) was sufficient to ensure decay resistance against the test fungi with <5% mass loss (ML), which led to durability class (DC) of 2.

Keywords

decay resistance; epoxidized linseed oil (ELO); equilibrium moisture content (EMC); mechanical properties; microscopy; treated wood; vinyl acetate (VA)

Published in

Holzforschung
2016, Volume: 70, number: 9, pages: 885-894
Publisher: WALTER DE GRUYTER GMBH

SLU Authors

• Cai, Shengzhen

  • Department of Forest Products, Swedish University of Agricultural Sciences
    

• Jebrane, Mohamed

  • Department of Forest Products, Swedish University of Agricultural Sciences
    

• Terziev, Nasko

  • Department of Forest Products, Swedish University of Agricultural Sciences
    

• Daniel, Geoffrey

  • Department of Forest Products, Swedish University of Agricultural Sciences
    

Associated SLU-program

SLU Plant Protection Network


UKÄ Subject classification

Wood Science


Publication identifier

DOI: https://doi.org/10.1515/hf-2015-0248

Permanent link to this page (URI)

https://res.slu.se/id/publ/78193