Surfactants

The objective of the work presented in the book deals with the corrosion inhibition behavior of some novel surfactants in acidic medium. A number of gemini and conventional surfactants were synthesized and were tested as corrosion inhibitor in acidic media. The synthesized surfactants were characterized by NMR. The surfactants considered for investigations are: (i) Three cationic gemini surfactants of hexadecyl series with methyl spacers namely butane diyl-14-bis(dimethyl hexadecyl ammonium bromide) pentane diyl-15-bis(dimethyl hexadecyl ammonium bromide) and hexane diyl-16-bis(dimethyl hexadecyl ammonium bromide) (ii) Two cationic gemini surfactants of tetradecyl series with methyl spacers namely butane diyl-14-bis(dimethyl tetradecyl ammonium bromide) and hexane diyl-16-bis(dimethyl tetradecyl ammonium bromide) (iii) One schiff base-based cationic gemini surfactants with S spacers namely bis[p-(NNN-tetradecyldimethylammonium bromide)benzylidene]thiourea and (iv) Triton X-100. The techniques used are weight loss solvent analysis potentiodynamic polarization measurements AC impedanceSEMEDAXAFM and thermodynamic/kinetic parameters.