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- Title
Effect of Sodium Carbonate on the Cloud Point in Alkyl Ether/Brine Systems: Apparent Relation with Dynamic Interfacial Tension Minimum.
- Authors
Hadji, Moundher; Aoudia, Mohamed; Al‐Rubkhi, Adil; Al‐Maamari, Rashid S.; Hadj‐Ziane‐Zafour, Amel
- Abstract
The effect of NaCO on the cloud point in NaCO/surfactant/brine was investigated using two series of nonionic surfactants, CEO and CEO. The cloud point, T , was found to decrease linearly with increasing NaCO concentration. This was attributed to Na and particularly to CO salting-out effect. The slope a = dTcp/ d[NaCO] became more and more negative as the degree of ethoxylation is increased, suggesting that the higher the number of ethylene oxide (EO) groups the stronger is the cloud point depression for a given increment in Naand CO ions in solution. This was also illustrated by the linear variation of Δ T = T − T with the surfactant degree of ethoxylation.
- Subjects
SODIUM carbonate; NONIONIC surfactants; ALKYL ethers; INTERFACIAL tension; SALTING out (Chemistry); ETHOXYLATION
- Publication
Journal of Surfactants & Detergents, 2016, Vol 19, Issue 6, p1223
- ISSN
1097-3958
- Publication type
Article
- DOI
10.1007/s11743-016-1870-3