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Preparation, Surface‐Active Properties and Antimicrobial Activities of Bis(Ester Quaternary Ammonium) Salts
Author(s) -
Węgrzyńska Joanna,
Chlebicki Jan,
Maliszewska Irena
Publication year - 2007
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-007-1020-z
Subject(s) - chemistry , critical micelle concentration , epichlorohydrin , surface tension , ammonium , adsorption , cationic polymerization , solubility , micelle , antimicrobial , salt (chemistry) , organic chemistry , inorganic chemistry , nuclear chemistry , aqueous solution , physics , quantum mechanics
New cationic surfactants, bis‐quaternary ammonium salts, were prepared from N , N ‐dimethylaminoalkyl esters of saturated fatty acids and products of the reactions of epichlorohydrin with primary amines: pentyl‐, hexyl‐ and octylamine. The bis (ester–ammonium) salts obtained were examined in respect to their surface‐active properties: critical micelle concentration (CMC), effectiveness of surface tension reduction (γ CMC ), and adsorption efficiency (pC 20 ). All these surfactants showed good water solubility and low critical micelle concentrations of more than two orders of magnitude lower than these of corresponding mono‐alkylammonium salts. They also showed good wetting capability, but worse foaming properties. All the surfactants tested were nontoxic to gram‐negative bacteria, but some of them inhibited the growth of gram‐positive bacteria and yeast.