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Comparative Studies of the Corrosion Inhibition Efficacy of a Dicationic Monomer and Its Polymer against API X60 Steel Corrosion in Simulated Acidizing Fluid under Static and Hydrodynamic Conditions.

ACS omega (2020-11-03)
Nurudeen A Odewunmi, Moses M Solomon, Saviour A Umoren, Shaikh A Ali
ABSTRACT

N 1,N 1-diallyl-N 6,N 6,N 6-tripropylhexane-1,6-diaminium chloride (NDTHDC) and its polymer poly(N 1,N 1-diallyl-N 6,N 6,N 6-tripropylhexane-1,6-diaminium chloride) (poly-NDTHDC) were synthesized and tested against API X60 carbon steel corrosion in 15 wt % HCl solution. Weight loss, electrochemical, and surface analysis techniques were used. Results show that poly-NDTHDC is better than NDTHDC. Moreover, 1000 mg/L NDTHDC protected the studied surface by 79.1% at 25 °C, while 100 mg/L poly-NDTHDC afforded 86.1% protection. Inhibition efficiency increases with temperature (up to 60 °C) but depreciates thereafter. NDTHDC and poly-NDTHDC perform better under the hydrodynamic condition than the static condition. TGA and FTIR results reveal that poly-NDTHDC is chemically and thermally stable.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
1,6-Dibromohexane, 96%