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Int. J. Nat. Soc. Sci., Research Report
Web Release Date: Dec.15, 2009 Copyright © 2008-2009 International
Association of Natural and Social Science
Effects of Chemical Treatment on Mechanical and Dielectric Properties of Jute Fiber Reinforced Low Density Polyethylene Composites
Mohammad Julhash Miaha* and Mubarak A Khanb
a Daffodil International University, Dhaka, Bangladesh; E-mail: mmjulhash@yahoo.com
b Radiation and Polymer Chemistry Laboratory, Bangladesh Atomic Energy Commission,
Dhaka, Bangladesh; E-mail: makhan@bangla.net
Received Aug.27, 2009
Abstract:
Jute fiber reinforced low-density polyethylene composites were prepared by heat press molding techniques. The composites were prepared with different compositions of jute fabric and polyethylene. Mechanical properties such as tensile strength, bending strength and bending elongation were studied on the virgin polyethylene sheet and different jute fabric-polyethylene composites. Mechanical properties for the composites were increased in comparison to virgin polyethylene as a result of reinforcement with untreated and treated jute fabrics. To improve adhesion between jute and polyethylene, jute fabrics were each treated with 10% HEMA in 2% Irg-184 and 3% HEMA in 2% benzol peroxide formulations. More than 56% enhancement in tensile strength, 30% in bending strength and 35% in bending elongation of the composites relative to virgin polyethylene sheets were observed. 3% HEMA in 2% benzol peroxide treated composites showed better performance than 10% HEMA in 2% Irg-184 treated composites. Dielectric properties like dielectric constant and dielectric loss of the composites were studied at different temperatures at 10 kHz frequency. It was observed that dielectric constant and loss tangent increased with increasing temperature up to a transition temperature and then decreased, and at the end become almost constant. The transition may be associated with ferro to paraelectric phasetransition was observed both in treated and untreated jute composites containing more than 20% jute.
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