Effect of Phenol Formaldehyde Impregnation on The Physical and Mechanical Properties of Soft-Inner Part of Oil Palm Trunk

Abstract

The objective of this study was to improve physical and mechanical properties of soft-inner part of oil palm trunk (S-OPT) after impregnation with phenol formaldehyde (PF) resin and densification by close system compression (CSC) method. Effect of different methods of PF resin impregnation (i.e., no vacuum-pressure, vacuum, and vacuum-pressure) was evaluated. The results showed that PF resin impregnation and CSC significantly improved the physical and mechanical properties of S-OPT up to: (1) 176% in density; (2) 309% in modulus of rupture (MOR); (3) 287% modulus of elasticity (MOE); and (4) 191% in the compressive strength. Physical and mechanical properties of S-OPT showed their best performances when PF resin impregnated with vacuum-pressure method as shown by higher weight gain, density, MOR, MOE, compressive strength, and lower recovery of set due to better penetration of PF resin into S-OPT. Combining PF resin impregnation and densification by CSC method could be a good method to improve physical and mechanical properties of S-OPT.Keywords : close system compression, phenol formaldehyde impregnation, physical and mechanical properties, soft-inner part of oil palm trunk 1 Date

Improving The Physical Properties of Young Teak Wood Through Phenol Formaldehyde Compregnation

“…It is thought that the comparatively high initial density (0.63) of teak wood in this experiment partially affects the low penetreation rate. In earlier reports, the low initial specific gravity values in other species (0.5>) such as oil palm trunk (Sumardi et al 1999;Aini et al 1999;Hartono et al 2016), sesenduk and jelutong (Adawiah et al 2012;Ashaari et al 2015) showed drastic increases in density levels. Another possibility is the unsuitable molecular weight of PF in this experiment (4000 Mn).…”

“…Furthermore, phenol formaldehyde has several advantages in improving wood quality (Way et al 2011;Ashaari et al2015;Ang et al 2014;Franke et al 2017). Phenol formaldehyde resin impregnation and compression at high pressures significantly increase the strength of wood, especially flexural resistance, dimensional stability, and biological durability (Shams and Yano 2008;Nabil et al 2016;Hartono et al 2016). Therefore, this paper discussed on the improvement the physical properties of young teak wood by compregnation treatment using phenol formaldehyde.…”

Peningkatan Kerapatan Kayu Samama Melalui Pre-kompresi Asam Sitrat (Density Improvement of Samama Wood by Pre-compression of Citric Acid)

“…Penelitian-penelitian mengenai impregnasi perekat ke dalam kayu telah banyak dilakukan (Furuno et al 2004, Shams et al 2006, Bakar et al 2013, Hartono et al 2016, namun masih terbatas pada penggunakan perekat sintesis seperti formaldehida, sedangkan penggunaan perekat alami seperti asam sitrat belum pernah dilakukan. Metode pre-kompresi telah dikembangkan dengan tujuan untuk meningkatkan daya serap larutan ke dalam kayu, terutama terhadap jenis-jenis kayu yang memiliki permeabilitas rendah.…”

The Physical Properties and The Extractive Content of Sugar Palm Stem (Arenga pinnata)

“…Therefore, continuous research is needed to modify the sugar palm stems properties so that they can be utilized properly. Some researchers have used palm sugar as raw material for a wood floor or parquet [7]. Other uses are impregnating oil palm stem structure with resins such as formaldehyde phenol [14].…”

“…Some researchers have used palm sugar as raw material for a wood floor or parquet [7]. Other uses are impregnating oil palm stem structure with resins such as formaldehyde phenol [14]. Impregnation will improve the quality of physical, mechanical, and durability of sugar palm stem.…”