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Moisture uptake and tensile properties of starch-sugar cane fibre films

Gilfillan, William N., Sopade, Peter A., & Doherty, William O.S. (2013) Moisture uptake and tensile properties of starch-sugar cane fibre films. International Sugar Journal, 115(1369), pp. 23-27.

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Abstract

THERE is an increasing need for biodegradable plastics because they are environmentally friendly and can replace petroleum-based non-degradable plastics which pollute the environment. Starch-derived films reinforced with sugar cane bagasse fibre, which are biodegradable, have been prepared and characterised by gravimetric analysis for moisture uptake, X-ray powder diffraction for crystallinity, and tensile testing for mechanical properties.
Results have shown that the addition of bagasse fibre (5 wt%, 10 wt% or 20 wt%) to either (modified) potato starch (Soluble starch) or hydroxypropylated maize starch reduced moisture uptake by up to 30% at 58% relative humidity (RH). Also, the tensile strength and the Young’s Modulus increased up to 63% and 80% respectively, with the maximum value obtained with 5 wt% fibre at 58% RH. However, the tensile strain of the films significantly decreased by up to 84%. The results have been explained based on the crystallinity of the films and the intrinsic properties of starch and bagasse fibres.

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ID Code: 50778
Item Type: Journal Article
Additional Information: Originally published nas a conference paper: Procedings of the 34th Australian Society of Sugar Cane Technologists
Keywords: bagasse, biodegradable polymer, fibre, film, starch
ISSN: 0020-8841
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Polymers and Plastics (091209)
Divisions: Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Research Centres > Centre for Tropical Crops and Biocommodities
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Informa Agra
Deposited On: 07 Jun 2012 08:18
Last Modified: 06 May 2014 08:50

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