Effect of heat treatment on the dimensional stability and surface properties of rubberwood

Ratnasingam, Jegatheswaran and Ioras, Florin (2010) Effect of heat treatment on the dimensional stability and surface properties of rubberwood. In: XXIII IUFRO World Congress : Forests for the Future Sustaining Society and the Environment, 23-28 August 2010, COEX, Seoul, Korea.

[img] PDF
Restricted to Repository staff only

126Kb

Abstract

Heat treatment is often used to improve the dimensional stability of wood. In this study, the effects of heat treatment on the dimensional stability and surface roughness of Rubberwood (Hevea brasiliensis), subjected to heat treatment at varying temperatures and for different durations, were examined. The oven-dry density, air-dry density, and swelling properties of the heat-treated and control Rubberwood samples, were determined. A stylus method was employed to evaluate the surface smoothness of the samples. Roughness measurements, using the stylus method, were made in the direction perpendicular to the fibre. Four main roughness parameters, i.e. mean arithmetic deviation of profile (Ra), mean peak-to-valley height (Rz), root mean square roughness (Rq), and maximum roughness (Ry) obtained from the surface of wood were used to evaluate the effect of heat treatment on the surface smoothness of the specimens. Significant differences were observed (p = 0.05) for the dimensional stability and surface roughness parameters under the different heat-treatment variables used. The values of density, swelling and surface roughness decreased with increasing temperature treatment and treatment times. Therefore, heat treatment allows Rubberwood to be successfully utilized for value-added products manufacture, where dimensional stability and surface smoothness are important, such as for window frames.

Item Type:Conference or Workshop Item (Paper)
Subject:Hevea
Subject:Heat - Treatment
Subject:Stability
Faculty or Institute:Faculty of Forestry
ID Code:11380
Deposited By: Samsida Samsudin
Deposited On:31 Mar 2011 04:11
Last Modified:08 Nov 2013 07:54

Repository Staff Only: Edit item detail

Document Download Statistics

This item has been downloaded for since 31 Mar 2011 04:11.

View statistics for "Effect of heat treatment on the dimensional stability and surface properties of rubberwood"


Universiti Putra Malaysia Institutional Repository

Universiti Putra Malaysia Institutional Repository is an on-line digital archive that serves as a central collection and storage of scientific information and research at the Universiti Putra Malaysia.

Currently, the collections deposited in the IR consists of Master and PhD theses, Master and PhD Project Report, Journal Articles, Journal Bulletins, Conference Papers, UPM News, Newspaper Cuttings, Patents and Inaugural Lectures.

As the policy of the university does not permit users to view thesis in full text, access is only given to the first 24 pages only.