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The Effect of Multiple-use of Polystyrene Cups on Styrene Monomer Migration

Mat Salleh, Siti Nur Hidayah (2008) The Effect of Multiple-use of Polystyrene Cups on Styrene Monomer Migration. Universiti Teknologi Petronas. (Unpublished)

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Abstract

Traces of styrene monomer are normally foWld in polystyrene (PS) Cl\PS due to incomplete reaction during their processing. This study was conducted to investigate the effect of multiple-use on styrene monomer migration from PS cup into the foodstuff it contained. Palm oil and distilled water were used as stimulants to promote the migration of styrene from the cups and to simulate the fatty and aqueous medil\ill of beverages respectively. The cups were repetitively exposed to the stimulants at 1 00°C up to ten times. The stimulants were then tested for their styrene monomer content using gas chromatography-mass spectroscopy (GC-MS) technique. Analysis by GC-MS showed that styrene monomer was detected in the palm oil stimulant but undetected in the distilled water when the cups were subjected to repetitive use. The maximl\ill concentration of styrene monomer measured in the palm oil was 161.74 ppb after the 6th repetition while the miniml\ill level was 16.14 ppb measured after the gth repetition. The maximl\ill value of 161.74 ppb is exceeding the limit of WHO guideline value which might be harmful to the consl\iller under prolong and continuous exposure. The study has highlighted the negative effect of using PS cup repetitively especially in the presence of fatty medil\ill. The effect may not be as bad if the cup contained only aqueous medium

Item Type: Final Year Project
Academic Subject : Academic Department - Mechanical Engineering - Materials - Engineering materials - Polymers - Biodegradability
Subject: T Technology > TJ Mechanical engineering and machinery
Divisions: Engineering > Mechanical
Depositing User: Users 2053 not found.
Date Deposited: 07 Nov 2013 12:22
Last Modified: 25 Jan 2017 09:44
URI: http://utpedia.utp.edu.my/id/eprint/10261

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