Grasas y Aceites, Vol 46, No 4-5 (1995)

Amphoteric surface active agents

A.M. F. Eissa
Chemistry Department, Faculty of Science, Zagazig University, Egypt


2-[trimethyl ammonium, triethyl ammonium, pyridinium and 2-amino pyridinium] alkanoates, four series of surface active agents containing carbon chain C12, C14, C16 and C18carbon atoms, were prepared. Their structures were characterized by microanalysis, infrared (IR) and nuclear magnetic resonance (NMR). Surface and interfacial tension, Krafft point, wetting time, emulsification power, foaming height and critical micelle concentration (cmc) were determined and a comparative study was made between their chemical structure and surface active properties. Antimicrobial activity of these surfactants was also determined.


Amphoteric surface active agent; Antimicrobial activity; Chemical structure; Surface active properties

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Copyright (c) 1995 Consejo Superior de Investigaciones Científicas (CSIC)

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