Dynamic Young's modulus and glass transition temperature of selected tropical wood species

Hamdan, S. and Sedik, Y. and Jusoh, Ismail and Hasan, M. and Talib, Z.A. (2009) Dynamic Young's modulus and glass transition temperature of selected tropical wood species. Bioresources 6(1), 737-750.

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Abstract

Dynamic Young's modulus (Ed) of selected tropical wood species, namely Oyera polyphylla, Endospermum diadenum, Cratoxylum arborecens. Alstonia pneumatophora, Macaranga gig antea and Com mer sonia bartramia, used for the study was measured using the free-free flexural vibration method. Young's modulus from three point bending (E3pb) and compression parallel to grain (Ecp) was also studied. The results show that the relationship between Ed and E3Pb for all wood species is very significant with the mean value of Ed consistently larger than or sometime equal to E3pb' Surprisingly, the relationship between Ed and Ecp is not signilicant except for Alstonia pneumatophora. The dynamic mechanical thermal properties were also investigated using the dynamic mechanical thermal analyser (DMTA). The results showed that the storage modulus of the wood species at -90°C is in the range of 1·48-4·09 GPa with a glass transition temperature ranging from 50 to 70°C.

Item Type: Article
Additional Information: Universiti Malaysia Sarawak, UNIMAS
Uncontrolled Keywords: Dynamic Young's modulus, Glass transition temperature. Three point bending Young's modulus, Compressive Young's modulus, Storage modulus, Loss langent, 2009, Universiti Malaysia Sarawak, UNIMAS, universiti, university, Borneo, Malaysia, Sarawak, Kuching, Samarahan, IPTA, education, undergraduate, research
Subjects: A General Works > AC Collections. Series. Collected works
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Faculties, Institutes, Centres > Faculty of Resource Science and Technology
Depositing User: Karen Kornalius
Date Deposited: 30 Apr 2014 03:29
Last Modified: 20 Jan 2022 02:10
URI: http://ir.unimas.my/id/eprint/2140

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