Preparation and Assessment of Water Soluble Hyperbranched Polymers Based on Polyamide as Corrosion Inhibitor for Petroleum Application

Shahen, Seham; Kabel, Khalid I; Kamel, L. A.; Abou-Shahba, R. M.; El-Shenawy, Azza. E.

doi:10.21608/jsrs.2018.14543

Preparation and Assessment of Water Soluble Hyperbranched Polymers Based on Polyamide as Corrosion Inhibitor for Petroleum Application

Document Type : Original Article

Authors

¹ Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt.

² Petroleum Applications Department, Egyptian Petroleum Research Institute, Naser City, P.O. 11727, Cairo,

³ Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt

⁴ Department of Chemistry, Faculty of Science, Al-Azhar University, Nasr City, Cairo, Egypt. Abstract

10.21608/jsrs.2018.14543

Abstract

The effect of addition of hyperbranched poly(amide-ester) (HPAE) generations 3 and 4 (AG3 and AG4) on the corrosion of steel in hydrochloric acid solution has been studied by weight loss measurements and quantum chemical calculations. The inhibition efficiency depended on the concentration of the hyperbranched poly(amide-ester). The experimental results suggest that these compounds are efﬁcient corrosion inhibitors and the inhibition efﬁciencies increase with increasing their concentrations. The computed quantum chemical properties show good correlation with experimental inhibition efﬁciencies. Results obtained showed that hyperbranched poly(amide-ester) (HPAE) generations 4 is the best inhibitor, and the protection efficiency follows the order: AG4 > AG3. Inhibition efficiency was found maximum up to 97.05% for AG4 at the highest concentration (1000 ppm).

Keywords