Physical properties of furfurylated mangium (Acacia mangium Willd.) and pine (Pinus merkusii Jungh et de Vriese) woods

Wood from plantation forest contains a lot of sapwood and juvenile wood which has inferior in physical properties. Furfurylation could improve the properties through a reaction between Furfuryl Alcohol (FA) with a hydroxyl group of wood components. The purpose of the study was to improve the physical properties of mangium (Acacia mangium Willd.) and pine (Pinus merkusii Jungh et de Vriese) woods. The wood specimens for physical properties was prepared according to the ASTM D 143-94. They were vacuumed at 600 mmHg during 30 minutes, when the vacuum has been released, the FA reagent was inserted to the tank and followed with pressure at 10 kg/cm2 during 30 minutes. The specimens were wrapped with aluminium foil and heated in the oven at 100°C for 24 hours. After conditioned for three weeks, the specimens were tested for physical properties including Weight Percent Gain (WPG), density, Moisture Content (MC), water absorption, swelling, shrinkage, and anti-swelling efficiency (ASwE) according to the ASTM D 143-94. Untreated specimens were also prepared for comparison purpose with five replications for each treatment. The results showed that furfurylated mangium and pine woods reached WPG 11.34% and 17.74%, densities were increased 8.95% and 3.75%, MC were decreased 88.41% and 84.74%, water absorption were decreased 41.76% and 46.84%, volume swelling were decreased 55.18% and 61.57%, volume shrinkage were decreased 34.99% and 64.75%, respectively. ASwE of mangium and pine woods was 55.1% and 61.6%. It could be mentioned that the furfurylated wood had better physical properties compared to untreated woods.

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