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Pol J Cosmetol 2016, 19(3): 255-259en  Effect of sulfobetaine concentration on viscosity and foamability of hand dishwashing liquidsKornela Bułat, Daria Wieczorek, Dobrawa Kwaśniewska Department of Technology and Instrumental Analysis, Faculty of Commodity Science, Poznań University of Economic and Business Summary Introduction. Dishwashing liquids represent an important segment of the household chemicals market, currently are third in Europe in terms of sales volume. On purchasing decisions of consumers beyond the price have affect a viscosity of the product. This is because the consumer identify a high viscosity product with a large amount of the active ingredients. However, the high viscosity of most common household products and cosmetics is due to the addition of a thickener. The use of overstated amount of thickener is sometimes disadvantageous due to the reduction in functionality of the product. Aim. In the present study attempts to determine the viscosity of model dishwashing liquids containing sulfobetaines and to determine the effect of the addition of sodium chloride on the viscosity of the liquids. Furthermore, foaming ability of the obtained compositions and the influence of sulfobetaine have been determined. Also assessed the impact of dirty substance on foaming properties. Results. The results of the study indicate that even a small addition sulfobetaine shapes viscosity of the product thus allowing to reduce the amount of sodium chloride in the finished product. Moreover, the products containing in its composition sulfobetaine present a satisfactory foaming properties. Conclusions. The results obtained research data are promising and suggest possibility of limiting the use of sodium chloride in household products and cosmetics. Key words: viscosity, density, dishwashing liquids, sulfobetaines |