Preparation and Application of Poly(Acrylic Acid-co-Acrylamide) on Scale and Corrosion Inhibition

Abstract:

This research is focused on the synthesis and the ability to inhibit scale and corrosion of poly(acrylic acid-co-acrylamide) (PAA-AM copolymers). A series of polymers were synthesized by free radical polymerization having various weight ratios of acrylic acid (AA) to acrylamide (AM). The structures of the synthesized polymers were characterized by UV-Vis Spectroscopy, FT-IR, and ¹H-NMR. The thermal stability of the polymers was analyzed by a TGA technique. The water solubility of the polymers was examined using a turbidity meter. The scale inhibition performance test was performed by titration of calcium ion with ethylene diamine tetraacetic acid (EDTA) solution. After that, the crystal structure of CaCO₃ scale from the scale inhibition test was examined using a scanning electron microscope. The efficiency of the corrosion inhibitor on low carbon steel AISI 1018 was investigated by a potentiodynamic polarization technique. The result show that PAA-AM copolymers having a 9:1 weight ratio with 45.82% at 100 ppm inhibited scale forming. The corrosion resistance of all inhibitors could be achieved when the concentration of the inhibitor was lower than 100 ppm.

• Periodical: Key Engineering Materials (Volume 824)
• Pages: 142-148
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.824.142
• Online since: October 2019
• Authors: Parinya Jitreewas, Phanita Tansiri, Siriporn Pranee, Chalermchai Khemtong, Narong Pungwiwat, Samitthichai Seeyangnok*
• Keywords: Corrosion Inhibition, Poly(Acrylic Acid-Co-Acrylamide), Scale Inhibition

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