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Copyright @ Pol J Cosmetol
Pol J Cosmetol 2019, 22(4): 301-304en  Effect of amphoteric surfactants on surface and wetting properties of hand dishwashing liquidsDobrawa Kwaśniewska 1/, Daria Wieczorek 1/, Katarzyna Staszak 2/ 1/ Department of Technology and Instrumental Analysis, Institute of Quality Science, Poznan University of Economic and Business 2/ Institute of Technology and Chemical Engineering, Poznan University of Technology Summary Introduction. In terms of sales, dishwashing liquids occupy third place in the segment of household chemicals. The consumer expects dishwashing liquids to exhibit a number of useful properties. First of all, dishwashing liquids should have good washing, wetting and foaming properties. Consequently, ongoing work is being carried out to improve the utility of household chemical products including dishwashing liquids. Aim. In this paper, the problem of determining the influence of amphoteric surfactants on the performance of dishwashing liquids was investigated. Material and methods. 10 standard dishwashing liquids were prepared. The surface tension of the aqueous solutions of dishwashing liquid was measured by the Du Noüy ring method. As part of the research, the size of the contact angle was also determined. Results. It was found that the addition of amphoteric surfactants: cocamidopropyl betaine and 4-(N-dodecyl-N,N-dimethylammonium)-butane-1-sulfonate influenced the improvement of the utility of model dishwashing liquids. The high ability to reduce surface tension is a highly expected property because, while maintaining good cleaning properties, it allows the use of smaller amounts of surfactants in the product composition, which may result in a reduction of skin irritation. Key words: dishwashing liquids, surface tension, contact angel, sulfobetaines |