Browsing by Author "Tussanee Srirerai"

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    The permeation of solvent mixture through nitrile and barrier gloves
    (Mahidol University. Mahidol University Library and Knowledge Center, 2014) Tussanee Srirerai; Wantanee Phanprasit; Pornpimol Kongtip; Natkamol Chansatitporn
    Breakthrough time is information provided by the manufacturer to be used for selecting CPC. It is generally the result of permeation tests with pure chemicals, while in most workplace mixtures are widely used. According to previous studies, it was found that the permeation rate of pure and mixed chemicals could be the same or different. There were several factors which affected the permeation. Additionally, there has been no exact method for selecting the gloves for the mixture yet. Therefore, this study had been conducted in order to study the permeation of the mixture through 2 kinds of gloves. The mixture consists of n-hexane, benzene and ethylbenzene. The new and repeatedly used Nitrile gloves and Barrier gloves in cleaning printing machine process were used in the permeation tests using the ASTM F-739 standard and subsequently analysed by gas chromatography flame ionization technique. The data of other affecting factors on the permeation would be collected including the appearance of the gloves after use, weight of gloves, number of day the gloves were used, exposure duration and number of time chemical contact with the gloves as well. For the repeatedly used gloves for 5 days, the general appearances were more colour stained and weight gain varied by number of days the gloves were used. Breakthrough time through Nitrile gloves decrease varied by number of day the gloves were used; average breakthrough time were 1454, 1427, 1427, 1340 and 1324 minutes respectively. In Comparison, of pure chemical against mixture permeation through the Nitrile gloves, it was found that Nitrile gloves can resist to the mixture better than pure chemical. Breakthrough time of n-hexane, benzene and ethylbenzene in pure chemical are 480, 16 and 43 minutes respectively, while breakthrough time of n-hexane, benzene and ethylbenzene in mixture are 1528, 1535 and >2880 minutes respectively. For Barrier gloves, there was no permeation of all three chemicals in pure chemical and mixture. In conclusion, both types of gloves can well resist the mixture chemical permeation in this study. For further study, various types of gloves and chemicals as well as mechanism of mixture permeation should be focused on. Then, the data of chemical permeation study may be collected for guideline development of chemical protective gloves selection