Browsing by Author "Kumari, T.B.K."

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    Effect of Dilution and Leaching Temperature on Extractable Protein Content in Natural Rubber Latex Gloves
    (Uva Wellassa University of Sri Lanka, 2013) Kumari, T.B.K.; Gunadasa, H.K.S.G.; Kumara, P. H. S.
    Natural rubber latex is an invaluable raw material in the present world. There are number of products made out of natural rubber latex as it has valuable properties like high tensile strength and elasticity. Natural rubber products are two different types as dry rubber products and latex based products. The synthetic rubber products have come in to the market of rubber product designing and it competes with natural rubber products. The major problem associated with natural rubber latex products is the 'type I allergy' caused by the proteins leached from the sweat or other body fluids (Parra, 2005). The reason is proteins present in natural rubber latex. The main aim of this study was to introduce two alternative methods to tackle the protein allergy in natural rubber products. Acid treatments, potassium hydroxide treatments and addition of water soluble polymers as strategies have been already introduced to reduce extractable proteins in natural rubber products. In this study, the effect of dilution and leaching temperature increment was investigated as another two methods to reduce the extractable proteins in the natural rubber products.
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    Effect of Dilution Level and Leaching Temperature on the Protein Content in Natural Rubber Gloves
    (Uva Wellassa University of Sri Lanka, 2013) Kumari, T.B.K.
    Natural rubber latex is an invaluable raw material in the present world, but the synthetic rubber products have come in to the arena of rubber product designing and it compete with natural rubber latex products. The major problem associate with natural rubber latex products is the ' type I allergy' caused by the proteins leached by the sweat or other body fluids. The reason is proteins present in natural rubber latex. The main aim of this study was to introduce two alternative methods to tackle the protein allergy in natural rubber products. Acid treatments, potassium hydroxide treatments and addition of water soluble polymers like strategies have already been introduced to reduce extractable proteins in natural rubber products. In this study two different experiments were conducted.First treatment was dilution of natural rubber latex with two different dilution levels as dry rubber content of 30% and 25% in field latex and prepares films for protein testing before centrifuging, after centrifuging and after manufacturing of gloves. Second treatment was treated the gloves with different leaching temperature levelsas 50°C, 60°C, 70°C, 80°C, 90 °C and protein testing. Results showed that the extractable protein content of the films reduced with increasing dilution and increasing leaching temperature. Dilution treatment and leaching treatments were found effective in reducing extractable protein content in natural rubber latex films.