Dynamic Young's Modulus, Morphological, And Thermal Stability Of 5 Tropical Light Hardwoods Modified By Benzene Diazonium Salt Treatment

Islam, M.S. and Rahman, M.R. and Jusoh, Ismail and Ahmed, Abu Saleh and Idrus, Mun'aim and Hamdan, Sinin (2011) Dynamic Young's Modulus, Morphological, And Thermal Stability Of 5 Tropical Light Hardwoods Modified By Benzene Diazonium Salt Treatment. Bioresources 6(1), 737-750.

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Abstract

In this study the tropical light hardwood species jelutong (Dyera costufata), terbulan (Endospermum diadenum) , batai (Paraserianthes mofuccana), rubberwood (Hevea brasiliensis), and pulai (Alstonia pneumatophora) were treated with benzene diazonium salt to improve their dynamic Young's modulus (Ed), and thermal stability. Benzine diazonium salt reacted with cellulose in wood and produced 2,6­ diazocellulose by a coupling reaction, as confirmed by Fourier transform infrared (FTIR) spectroscopy. Values of Ed were calculated from the free­ free flexural vibration method and found to increase on treatment. The morphological properties were studied by FTIR and scanning electron microscopy (SEM) and found to be changed. Thermal properties of treated wood samples were evaluated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The treated wood samples exhibited an increased thermal stability relative to the untreated wood samples; this increase may be related to the formation of 2, 6­ diazo cellulose compound.

Item Type: Article
Additional Information: Universiti Malaysia Sarawak, UNIMAS
Uncontrolled Keywords: Dynamic Young's modulus; Thermal stability; FTIR; Tropical wood, 2011, 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 03:30
Last Modified: 03 Aug 2023 07:15
URI: http://ir.unimas.my/id/eprint/2141

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