By Tharwat F. Tadros
Surfactants are floor energetic brokers, molecules that experience an important position in emulsions, suspensions, and foams. They locate common program in own care, cosmetics, prescription drugs, agrochemicals and the nutrition undefined. Their class, actual homes, part habit, their results and purposes are lined during this publication.
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Extra info for An Introduction to Surfactants
Most commercially available PVA molecules contain 4– 12 % acetate groups. These acetate groups, which are hydrophobic, give the molecule its amphipathic character. On a hydrophobic surface such as polystyrene, the polymer adsorbs with preferential attachment of the acetate groups on the surface, leaving the more hydrophilic vinyl alcohol segments dangling in the aqueous medium. These partially hydrolyzed PVA molecules also exhibit surface activity at the o/w interface . The most convenient polymeric surfactants are those of the block and graft copolymer type.
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28 | 2 General classification of surfactants   N. Schonfeldt, Surface Active Ethylene Oxide Adducts, Pergamon Press, USA, 1970. R. R. Zana and E. Alami, Gemini Surfactants, in: Novel Surfactants, K. ), Chapter 12, Marcel Dekker, New York, 2003.  W. von Rybinsky and K. Hill, in: Novel Surfactants, K. ), Chapter 2, Marcel Dekker, New York, 2003.  C. J. Drummond, C. Fong, I. Krodkiewska, B. J. Boyd and I. J. A. Baker, in: Novel Surfactants, K. ), Chapter 3, Marcel Dekker, New York, 2003.