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Mechanical, morphological, structural and dynamic mechanical properties of alkali treated Ensete stem fibers reinforced unsaturated polyester composites


Citation

Negawo, Tolera A. and Polat, Yusuf and Buyuknalcaci, Feyza N. and Kilic, Ali and Saba, Naheed and Jawaid, Mohammad (2019) Mechanical, morphological, structural and dynamic mechanical properties of alkali treated Ensete stem fibers reinforced unsaturated polyester composites. Composite Structures, 207. pp. 589-597. ISSN 0263-8223

Abstract

Present study deals the surface morphology and structural composition analysis of alkali (NaOH) treated 2.5% 5.0% and 7.5 wt% Ensete stem fiber obtained from the Ethiopian Ensete ventricosum plant. Treated Ensete fibers reinforced unsaturated polyester (UP) composites were characterized in terms of tensile, flexural, surface morphology and dynamic mechanical properties. Mechanical test results revealed that 5.0 wt% alkali treated Ensete fibers/UP composites showed 14.5% and 43.5% increase in flexural strength and Young's modulus respectively, with relative to untreated Ensete fibers/UP composites. Storage and loss modulus value also highest for 5.0 wt% alkali treated Ensete fibers/UP composites. Moreover, a positive shift in glass transition temperature (Tg) of composites after alkali treatment and tensile fracture surface morphology indicates better interfacial interaction in treated Ensete fibers/UP composites. Overall we concluded that 5.0 wt% treated Ensete fibers satisfactorily and effectively improved mechanical, morphological and dynamic properties of UP for various engineered and hi-tech applications.


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Additional Metadata

Item Type: Article
Divisions: Institute of Tropical Forestry and Forest Products
DOI Number: https://doi.org/10.1016/j.compstruct.2018.09.043
Publisher: Elsevier
Keywords: Ensetefibers; Alkali treatment; Unsaturated polyester resin; Mechanical test; Dynamic mechanical properties; Glass transition temperature
Depositing User: Ms. Nida Hidayati Ghazali
Date Deposited: 23 Feb 2021 18:50
Last Modified: 23 Feb 2021 18:50
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.1016/j.compstruct.2018.09.043
URI: http://psasir.upm.edu.my/id/eprint/81322
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