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The effect of water and citric acid on sago starch bio-plastics

Ahmad, Zuraida and Yusof, Yusliza and Anuar, Hazleen and Razali, Muhammad Khairul Muhaimin (2011) The effect of water and citric acid on sago starch bio-plastics. In: 2nd International Conference on Biotechnology Engineering (ICBioE 2011), 17 -19 May 2011, Kuala Lumpur, Malaysia. (In Press)

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Starch is a biodegradable polymer produced in abundance from many renewable resources. In this research, bio-plastic starch (BPS) was produced from melt processing of Malaysian sago starch with the additions of glycerol as plasticizer and water as well as citric acid (CA) as a secondary additive. The main objective was to investigate the influence of CA and water contents with presence of glycerol on the mechanical properties of BPS. The CA content varies from 0 to 40 w/wt% while water was also varied from 0 to 40 w/wt%. The materials were prepared by melt blending in the Haake Rheomix at 130°C, followed by injection molding process. The properties of BPS with different CA and water content, are investigated through Fourier transform infrared (FT-IR) and tensile testing. FT-IR spectroscopy proved that acid citric improve the properties of BPS and water give negative effects to the carbon hydrogen-bond. The samples were also tested by scanning electron microscopy (SEM). It is obvious that the addition of the CA at 30 wt/wt% improve the mechanical property of BPS to more than 40% compare to the addition of water.

Item Type: Conference or Workshop Item (Full Paper)
Additional Information: 3254/2206
Uncontrolled Keywords: Component; sago, starch, melt processing, citric acid
Subjects: T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User: Prof Ir Dr Zuraida Ahmad
Date Deposited: 06 Oct 2011 17:05
Last Modified: 20 Dec 2011 14:20
URI: http://irep.iium.edu.my/id/eprint/2206

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