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Dr. Mohammad Jawaid
Universiti Putra Malaysia, Malaysia
Dynamic Mechanical Properties of Oil Palm Empty Fruit Bunch and Coir Fiber Reinforced Polypropylene Hybrid Composites
Dynamic Mechanical Analysis (DMA) is one of the most powerful tools to study behaviour of polymeric materials and it allows for quick and easy measurement of material properties. DMA measures the mechanical properties of viscoelastic materials as a function of temperature or frequency when the materials are deformed under the action of a periodic force or displacement. Hybrid composites are prepared by injection moulding technique by reinforcing coir and oil palm fibres (OPEFB) with polypropylene matrix. Designing of this kind of new materials it becomes important to measure the influence of fibre–matrix interface properties on macroscopic mechanical properties. The OPEFB/coir fibre reinforced polypropylene hybrid composite were subjected to dynamic mechanical analysis to determine the dynamic properties with special reference to the effect of fibre loading, frequency and temperature. The storage modulus E’ were found to increase with weight fraction of fibre. This is due to the increased stiffness imparted by the natural fibres. The intrinsic properties of the components, morphology of the system and the nature of interface between the phases determine the dynamic mechanical properties of the composite. The loss modulus and damping peaks were found to be lowered by the incorporation of fibre up to 30%. The height of the damping peaks found to be depended on the fibre content.
Dr. Mohammad Jawaid (PhD) is currently working as Fellow Researcher (Associate Professor), at Biocomposite Technology Laboratory, Institute of Tropical Forestry and Forest Products (INTROP), Universiti Putra Malaysia, Serdang, Selangor, Malaysia and also Visiting Professor at Department of Chemical Engineering, College of Engineering, King Saud University, Riyadh, Saudi Arabia since June 2013. Previously he worked as Visiting Lecturer, Faculty of Chemical Engineering, Universiti Teknologi Malaysia (UTM) and also worked as Expatriate Lecturer under UNDP project with Ministry of Education of Ethiopia at Adama University, Ethiopia. He received his Ph.D. from Universiti Sains Malaysia, Malaysia. He has more than 10 years of experience in teaching, research, and industries. His area of research includes natural fibres based polymer composites, hybrid composites, nanocomposites, nanocellulose, etc. So far he has published 4 book, 12 book chapters, and more than 100 International journal papers and 3 Published review paper under Top 25 hot articles in science direct during 2013-2014. He is also the Deputy Editor-in-Chief of Malaysian Polymer Journal and reviewer of several high impact ISI journals.
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