%0 Journal Article %T Reaction of poly(methyl methacrylate / maleic anhydride) with phenylhydazine and 4- aminobenzoic acid and their use as mild steel (ST-37) corrosion inhibitor %J Nashrieh Shimi va Mohandesi Shimi Iran %I Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECR %Z 1022-7768 %A Atabaki, Fariborz %A Jahangiri, Shahrzad %D 2022 %\ 11/22/2022 %V 41 %N 3 %P 97-110 %! Reaction of poly(methyl methacrylate / maleic anhydride) with phenylhydazine and 4- aminobenzoic acid and their use as mild steel (ST-37) corrosion inhibitor %K Poly (methyl methacrylate) %K maleic anhydride %K Phenylhydrazine %K 4- aminobenzoic acid %K Corrosion inhibitor %K Mild steel %R %X In this study, phenylhydrazine and 4-aminobenzoic acid were reacted with co-polymer (methyl methacrylate / maleic anhydride) and in the following, used as a corrosion inhibitor of low carbon steel. The chemical structure of copolymers was identified by spectroscopy of FT-IR and H-NMR, also titration and viscosity test. the amount of thermal resistance synthesized copolymers was investigated by thermal analysis of TGA, DTG and DSC. the results indicated that the thermal resistance of P (MMA-MA) / PhH and P (MMA-MA) / ABA in comparison with the (MMA-MA) has increased. In the following, via electrochemical potentiodynamic polarization tests, EDX and FE-SEM, the effectiveness and inhibition capability of copolymers in hydrochloric acid of 0.5 mol was investigated. The results showed that corrosion rate of co-polymers are (MMA-MA)