Solution properties of hydrophobically modified
We tested nine hydrophobically modified polyacrylamides with molecular weights situated between 1.58 and 0.89 × 106 g/mol for enhanced oil recovery applications. Their solution properties were investigated in the distilled water, brine solution, formation water and sea water. Their critical associat...
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doaj-09105b3b752b4223afb8e885e46dd98c2020-11-24T21:57:48ZengElsevierEgyptian Journal of Petroleum1110-06212016-12-0125443344410.1016/j.ejpe.2015.03.014Solution properties of hydrophobically modifiedA.M. Al-Sabagh0N.G. Kandile1R.A. El-Ghazawy2M.R. Noor El-Din3E.A. El-Sharaky4Egyptian Petroleum Research Institute, Nasr City, Cairo 11727, EgyptChemistry Department, Faculty of Women, Ain Shams University, Heliopolis, 11757 Cairo, EgyptEgyptian Petroleum Research Institute, Nasr City, Cairo 11727, EgyptEgyptian Petroleum Research Institute, Nasr City, Cairo 11727, EgyptEgyptian Petroleum Research Institute, Nasr City, Cairo 11727, EgyptWe tested nine hydrophobically modified polyacrylamides with molecular weights situated between 1.58 and 0.89 × 106 g/mol for enhanced oil recovery applications. Their solution properties were investigated in the distilled water, brine solution, formation water and sea water. Their critical association concentrations were determined from the relationship between their concentrations and the corresponding apparent viscosities (ηapp) at 30 °C at shear rate 6 s−1. They were between 0.4 and 0.5 g/dl. The brine solutions of 0.5 g/dl of HM-PAMs were investigated at different conditions regarding their apparent viscosities. Such conditions were mono and divalent cations, temperature ranging from 30 to 90 °C, the shear rate ranging from 6 to 30 s−1 and the aging time for 45 days. The surface and interfacial tensions for the HM-PAMs were measured for concentration range from 0.01 to 1 g/dl brine solutions at 30 °C and their emulsification efficiencies were investigated for 7 days. The discrepancy in the properties and efficiencies of the tested copolymers was discussed in the light of their chemical structure.http://www.sciencedirect.com/science/article/pii/S1110062114200110Hydrophobic associationCritical association concentrationSolution propertiesPolymer solutionsRheological properties |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
A.M. Al-Sabagh N.G. Kandile R.A. El-Ghazawy M.R. Noor El-Din E.A. El-Sharaky |
spellingShingle |
A.M. Al-Sabagh N.G. Kandile R.A. El-Ghazawy M.R. Noor El-Din E.A. El-Sharaky Solution properties of hydrophobically modified Egyptian Journal of Petroleum Hydrophobic association Critical association concentration Solution properties Polymer solutions Rheological properties |
author_facet |
A.M. Al-Sabagh N.G. Kandile R.A. El-Ghazawy M.R. Noor El-Din E.A. El-Sharaky |
author_sort |
A.M. Al-Sabagh |
title |
Solution properties of hydrophobically modified |
title_short |
Solution properties of hydrophobically modified |
title_full |
Solution properties of hydrophobically modified |
title_fullStr |
Solution properties of hydrophobically modified |
title_full_unstemmed |
Solution properties of hydrophobically modified |
title_sort |
solution properties of hydrophobically modified |
publisher |
Elsevier |
series |
Egyptian Journal of Petroleum |
issn |
1110-0621 |
publishDate |
2016-12-01 |
description |
We tested nine hydrophobically modified polyacrylamides with molecular weights situated between 1.58 and 0.89 × 106 g/mol for enhanced oil recovery applications. Their solution properties were investigated in the distilled water, brine solution, formation water and sea water. Their critical association concentrations were determined from the relationship between their concentrations and the corresponding apparent viscosities (ηapp) at 30 °C at shear rate 6 s−1. They were between 0.4 and 0.5 g/dl. The brine solutions of 0.5 g/dl of HM-PAMs were investigated at different conditions regarding their apparent viscosities. Such conditions were mono and divalent cations, temperature ranging from 30 to 90 °C, the shear rate ranging from 6 to 30 s−1 and the aging time for 45 days. The surface and interfacial tensions for the HM-PAMs were measured for concentration range from 0.01 to 1 g/dl brine solutions at 30 °C and their emulsification efficiencies were investigated for 7 days. The discrepancy in the properties and efficiencies of the tested copolymers was discussed in the light of their chemical structure. |
topic |
Hydrophobic association Critical association concentration Solution properties Polymer solutions Rheological properties |
url |
http://www.sciencedirect.com/science/article/pii/S1110062114200110 |
work_keys_str_mv |
AT amalsabagh solutionpropertiesofhydrophobicallymodified AT ngkandile solutionpropertiesofhydrophobicallymodified AT raelghazawy solutionpropertiesofhydrophobicallymodified AT mrnooreldin solutionpropertiesofhydrophobicallymodified AT eaelsharaky solutionpropertiesofhydrophobicallymodified |
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