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- Title
Enhancement of corrosion inhibition efficiency of sodium alginate via grafting with polyacrylamide.
- Authors
Hefnawy, Ahmed; Zaki, Salma Hassan; Hassouna, Mohammed Salah El-Din; Helmi, Shacker
- Abstract
Copolymerization of sodium alginate (SAG) with polyacrylamide (PAC) was successfully achieved using microwave assisted polymerization technique. At 240 mg/100 mL sodium alginate on its own gave an inhibition efficiency of 64%, while its grafting with polyacrylamide the efficiency reached 86%. Statistical analysis revealed a highly significant difference in inhibition efficiency between SAG and SAG-g-PAC. SAG-g-PAC data obeyed four adsorption isotherm models, namely Langmuir, Temkin, Flory-Huggins, and kinetic model of El-Awady isotherm, while SAG data obeyed only Langmuir model. Scanning electron microscopy images revealed the smoothness and homogeneity of SAG-g-PAC adsorption on the mild steel surface.
- Subjects
SODIUM alginate; MILD steel; ADSORPTION isotherms; SCANNING electron microscopy
- Publication
Desalination & Water Treatment, 2022, Vol 254, p208
- ISSN
1944-3994
- Publication type
Article
- DOI
10.5004/dwt.2022.28391