Preparation and evaluation of poly [2-amino-4(1-benzyl-1Hindol- 3-yl) thiophene-3-carbonitrile)] as corrosion inhibitor of C- steel in the acidic medium

Rasha Abdel Baseer; S M Syam; A I Ali; Heba M Abo-Salem

doi:10.4172/2471-9935-C2-021

Preparation and evaluation of poly [2-amino-4(1-benzyl-1Hindol- 3-yl) thiophene-3-carbonitrile)] as corrosion inhibitor of C- steel in the acidic medium

4^th Edition of International Conference and Exhibition on Polymer Chemistry

March 28-29, 2019 Rome, Italy

Rasha Abdel Baseer, S M Syam, A I Ali and Heba M Abo-Salem

National Research Centre, Egypt Benha University, Egypt

Posters & Accepted Abstracts: Polym Sci

Abstract:

The inhibition performance of poly [2-amino-4(1- benzyl-1H-indol-3-yl) thiophene-3-carbonitrile)] as a new polymer has been investigated for carbon-steel in 0.5 M H2SO4 and the polymer is synthesized at different molecular weight. Notably, gives high inhibition efficiency even at low concentration. The corrosion inhibition capability of the polymer is due to the adsorption of its functional groups at the C-steel surface. The conjugation resulted from the indole/thiophene ring plays an important role in the improvement of the inhibition efficiency. The structure of polymer had been approved by NMR and IR. The type of adsorption of the polymer was elucidated by different adsorption isotherms. FTIR analysis was performed to confirm the adsorption between the polymer and C-steel surface. The morphological changes on the surface of steel were monitored by scanning electron microscopy (SEM).