The feasibility of using oil palm veneers in LVL with respect to its wettability, adhesives penetration and bending strength / Siti Zalifah Mahmud

The depletion of our tropical timber has encouraged the Malaysian wood based industry to seek alternative lignocellulosic materials for board production. Oil palm (Elaeis guinensis) from agricultural residues is a potential alternative. Oil palm trunk (OPT) appears to have great potential use after...

Full description

Saved in:

Bibliographic Details
Main Author:	Mahmud, Siti Zalifah
Format:	Thesis
Language:	English
Published:	2007
Subjects:	Palm oil
Online Access:	https://ir.uitm.edu.my/id/eprint/101809/1/101809.pdf
Tags:	Add Tag No Tags, Be the first to tag this record!

id	my-uitm-ir.101809
record_format	uketd_dc
spelling	my-uitm-ir.1018092024-11-13T08:08:34Z The feasibility of using oil palm veneers in LVL with respect to its wettability, adhesives penetration and bending strength / Siti Zalifah Mahmud 2007 Mahmud, Siti Zalifah Palm oil The depletion of our tropical timber has encouraged the Malaysian wood based industry to seek alternative lignocellulosic materials for board production. Oil palm (Elaeis guinensis) from agricultural residues is a potential alternative. Oil palm trunk (OPT) appears to have great potential use after rubberwood, as a source of valueadded products such as plywood, laminated veneer lumber (LVL) and parallel strand lumber (PSL). Due to the potential of using OPT as raw a material for panel product, it is necessary to investigate its properties. Therefore, the main objective of this study is to determine the general properties of OPT veneer and its interaction with adhesives. The properties investigated were moisture content, relative density, pH, buffer capacity, wettability, surface tension, adhesive penetration and bending strength and stiffness. The moisture content of dry veneer was approximately 8%. The results of relative density of OPT veneer increased significantly from the bottom portion to the top portion and declined significantly inward from the outer part to the inner part. The average mean pH value and buffer capacity of OPT veneer were 4.52 and 0.12 me., respectively. Contact angle of the surface using deionised distilled water was 49.78°. Surface tension parameter of OPT veneer for Lifshitz van der Waals’ (γSLW) component was 39.40 mJ/m², acid or electron accepting (γS+) was 1.65 mJ/m², base or electron donating (γS-) was 38.37 mJ/m² and total surface tension (γS total) was 55.20 mJ/m². In general, the adhesive penetration properties when using PF and UF resins were significantly different between parts and temperatures, but only slightly significant at different portions. Bending strength properties of laminated OPT veneer when using PF and UF resins mostly gave a higher significance value for comparison at different temperatures, portions and parts. A Pearson correlation coefficient was computed between bending strength and adhesive penetration properties of laminated OPT veneer using PF and UF resins. Generally a weak, positive correlation was established and found to be significant. 2007 Thesis https://ir.uitm.edu.my/id/eprint/101809/ https://ir.uitm.edu.my/id/eprint/101809/1/101809.pdf text en public masters Universiti Teknologi MARA (UiTM) Faculty of Applied Science
institution	Universiti Teknologi MARA
collection	UiTM Institutional Repository
language	English
topic	Palm oil
spellingShingle	Palm oil Mahmud, Siti Zalifah The feasibility of using oil palm veneers in LVL with respect to its wettability, adhesives penetration and bending strength / Siti Zalifah Mahmud
description	The depletion of our tropical timber has encouraged the Malaysian wood based industry to seek alternative lignocellulosic materials for board production. Oil palm (Elaeis guinensis) from agricultural residues is a potential alternative. Oil palm trunk (OPT) appears to have great potential use after rubberwood, as a source of valueadded products such as plywood, laminated veneer lumber (LVL) and parallel strand lumber (PSL). Due to the potential of using OPT as raw a material for panel product, it is necessary to investigate its properties. Therefore, the main objective of this study is to determine the general properties of OPT veneer and its interaction with adhesives. The properties investigated were moisture content, relative density, pH, buffer capacity, wettability, surface tension, adhesive penetration and bending strength and stiffness. The moisture content of dry veneer was approximately 8%. The results of relative density of OPT veneer increased significantly from the bottom portion to the top portion and declined significantly inward from the outer part to the inner part. The average mean pH value and buffer capacity of OPT veneer were 4.52 and 0.12 me., respectively. Contact angle of the surface using deionised distilled water was 49.78°. Surface tension parameter of OPT veneer for Lifshitz van der Waals’ (γSLW) component was 39.40 mJ/m², acid or electron accepting (γS+) was 1.65 mJ/m², base or electron donating (γS-) was 38.37 mJ/m² and total surface tension (γS total) was 55.20 mJ/m². In general, the adhesive penetration properties when using PF and UF resins were significantly different between parts and temperatures, but only slightly significant at different portions. Bending strength properties of laminated OPT veneer when using PF and UF resins mostly gave a higher significance value for comparison at different temperatures, portions and parts. A Pearson correlation coefficient was computed between bending strength and adhesive penetration properties of laminated OPT veneer using PF and UF resins. Generally a weak, positive correlation was established and found to be significant.
format	Thesis
qualification_level	Master's degree
author	Mahmud, Siti Zalifah
author_facet	Mahmud, Siti Zalifah
author_sort	Mahmud, Siti Zalifah
title	The feasibility of using oil palm veneers in LVL with respect to its wettability, adhesives penetration and bending strength / Siti Zalifah Mahmud
title_short	The feasibility of using oil palm veneers in LVL with respect to its wettability, adhesives penetration and bending strength / Siti Zalifah Mahmud
title_full	The feasibility of using oil palm veneers in LVL with respect to its wettability, adhesives penetration and bending strength / Siti Zalifah Mahmud
title_fullStr	The feasibility of using oil palm veneers in LVL with respect to its wettability, adhesives penetration and bending strength / Siti Zalifah Mahmud
title_full_unstemmed	The feasibility of using oil palm veneers in LVL with respect to its wettability, adhesives penetration and bending strength / Siti Zalifah Mahmud
title_sort	feasibility of using oil palm veneers in lvl with respect to its wettability, adhesives penetration and bending strength / siti zalifah mahmud
granting_institution	Universiti Teknologi MARA (UiTM)
granting_department	Faculty of Applied Science
publishDate	2007
url	https://ir.uitm.edu.my/id/eprint/101809/1/101809.pdf
_version_	1818588017881776128

The feasibility of using oil palm veneers in LVL with respect to its wettability, adhesives penetration and bending strength / Siti Zalifah Mahmud

Similar Items