Aggregational behavior of alkanediyl-α,ω-bis(tetradecyldimethylammonium) dibromide series with ionic and nonionic hydrotropes at different temperatures

Abstract

The purpose of the present study was to determine the influence of various additives on the aggregation behavior of gemini surfactants and to search for means which reduce the values of critical micelle concentration. The mixed micellar properties of cationic hydrotropes (aniline hydrochloride, para-toluidine hydrochloride, ortho-toluidine hydrochloride), anionic hydrotropes (sodium salicylate, sodium benzoate, sodium tosylate) and nonionic hydrotropes (phenol, resorcinol, pyrogallol) with conventional alkyl tetradecylammonium bromide (TTAB) and their dimeric homologues viz., 14-s-14, (s=4, 5, 6) in aqueous medium have been studied using conductometric technique at four different temperatures ranging from 298.15K to 313.15K. The evaluated thermodynamic parameters have been discussed in detail.