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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...

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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
https://ir.uitm.edu.my/id/eprint/101809/
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spelling my.uitm.ir.1018092024-11-13T08:08:34Z https://ir.uitm.edu.my/id/eprint/101809/ The feasibility of using oil palm veneers in LVL with respect to its wettability, adhesives penetration and bending strength / Siti Zalifah Mahmud 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 NonPeerReviewed text en https://ir.uitm.edu.my/id/eprint/101809/1/101809.pdf The feasibility of using oil palm veneers in LVL with respect to its wettability, adhesives penetration and bending strength / Siti Zalifah Mahmud. (2007) Masters thesis, thesis, Universiti Teknologi MARA (UiTM). <http://terminalib.uitm.edu.my/101809.pdf>
institution Universiti Teknologi Mara
building Tun Abdul Razak Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Mara
content_source UiTM Institutional Repository
url_provider http://ir.uitm.edu.my/
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
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
publishDate 2007
url https://ir.uitm.edu.my/id/eprint/101809/1/101809.pdf
https://ir.uitm.edu.my/id/eprint/101809/
_version_ 1817847064454758400
score 13.222552

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