TY  - JOUR
AB  - Purpose Surfactants have been reported to have high inhibition efficiencies for corrosion of steel. This paper aims to study the performance of a low toxic copolymer of polydimethylsiloxane and polyoxyalkylene (POA) surfactant named as POPS, as a corrosion inhibitor for mild steel (ASTM 1005) in hydrochloric acid (HCl) solution at 25°C.Design/methodology/approach To evaluate POPS efficiency as a corrosion inhibitor, the following techniques were used: surface tension measurements, weight loss measurements, open circuit potential monitoring, potentiodynamic polarization curves, electrochemical impedance spectroscopy (EIS), scanning electron microscopy and contact angle measurements.Findings Results indicated that POPS acted as a mixed corrosion inhibitor and led to a hydrophobic protector film on the metal surface. The adsorption process obeyed the Langmuir adsorption isotherm by chemisorption. The maximum efficiency of the surfactant studied was achieved in a concentration around the critical micelle concentration.Originality/value Surfactant (POPS) of low level of toxicity acts as a mixed corrosion inhibitor in HCl medium. Inhibitor film formation was characterized by EIS results. A mechanism for corrosion inhibition is proposed.
VL  - 63
IS  - 6
SN  - 0003-5599
DO  - 10.1108/ACMM-11-2014-1458
UR  - https://doi.org/10.1108/ACMM-11-2014-1458
AU  - de Souza Paulo Renato
AU  - Ferrari Jean Vicente
AU  - Guedes Isabel Correia
PY  - 2016
Y1  - 2016/01/01
TI  - Low toxic polymeric surfactant as a corrosion inhibitor for mild steel in hydrochloric acid medium
T2  - Anti-Corrosion Methods and Materials
PB  - Emerald Group Publishing Limited
SP  - 421
EP  - 430
Y2  - 2024/04/19
ER  -