Water repellent efficiency of organic solvent extractives from Aleppo pine leaves and bark applied to wood

摘要: Natural wax-like materials were extracted from leaves and bark of Aleppo pine (Pinus halepensis Mill.) by using toluene as organic solvent. Experimental water repellent formulations (WRFs) prepared 10% gum rosin the resin constituent 0%, 1% 2% paraffin wax, needle/bark extracts or mixtures wax in proportion 1:1 hydrophobic substance. All experimental WRFs applied to small, cross-sectional wood specimens Scots Pinus sylvestris L. beech (Fagus sylvatica L.). Wood impregnated a simple immersion technique effectiveness (WRE) was assessed tangential swelling data. Toluene soluble needles provided properties but lesser degree when compared wax. Bark appeared be stronger than needle extracts, Both can successful substitutes for up 50%. The protection differences between treatments smaller heartwood sapwood sapwood.