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The influence of mercerised kenaf fibres reinforced polylactic acid composites on dynamic mechanical analysis


Citation

A. Talib, Rosnita and Abdan, Khalina and Mohamed Amin Tawakkal, Intan Syafinaz (2011) The influence of mercerised kenaf fibres reinforced polylactic acid composites on dynamic mechanical analysis. Key Engineering Materials, 471-472 (2). pp. 815-820. ISSN 1013-9826

Abstract

The potential of using cellulose to reinforce the thermal stability of kenaf derived cellulose (KDC)/polylactic acid (PLA) composite was investigated in this study. The cellulose was derived from kenaf bast fibre which was chemically treated via chlorination and mercerisation processes. The composites with various loadings of cellulose (dry weight basis) ranging from 0% to 60% were produced by melt mixing and compression moulding. Dynamic mechanical properties namely storage modulus (E’), loss modulus (E”) and tan δ of the KDC/PLA composites and the commercial PLA were analysed and compared as a function of temperature. ESEM micrographs demonstrated that the mercerisation of kenaf fibres have successfully removed the lignin and hemicellulose, thus producing cellulose which can be observed by its rougher surface and greater size reduction than the raw fibre. The DMA results demonstrated that the storage modulus of 60% KDC/PLA composite is twice higher than the commercial PLA and the rest of the composites within a high temperature range (above 80°C). The glass transition temperatures (Tg) generated from the loss modulus curves exhibit that the peak of the loss modulus was shifted to higher temperature as the percentage of the cellulose loading was increased. These results show a better thermal stability of the composites when incorporated with the cellulose.


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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.4028/www.scientific.net/KEM.471-472.815
Keywords: Cellulose; DMA; ESEM; Poly(lactic acid) (PLA); Thermal Stability.
Depositing User: Muizzudin Kaspol
Date Deposited: 21 Oct 2015 07:27
Last Modified: 04 Feb 2016 07:55
URI: http://psasir.upm.edu.my/id/eprint/23208
Statistic Details: View Download Statistic

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