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4273535 
Journal Article 
Synthesis and properties of nonylphenol-substituted dodecyl sulfonate 
Niu, RX; Wang, JL; Wang, WY; Song, H; Wang, C; Wang, DQ 
2017 
Yes 
Journal of Dispersion Science and Technology
ISSN: 0193-2691
EISSN: 1532-2351 
38 
12 
1692-1697 
WOS:000414942900004 
Nonylphenol-substituted dodecyl sulfonate (C-12-NPAS) was synthesized via sulfonation-alkylation-neutralization using 1-dodecene, SO3, and nonylphenol as raw materials. The properties such as surface tension, interfacial tension (IFT), wettability, foam properties, and salinity tolerance of C-12-NPAS were systematically investigated. The results show that the critical micelle concentration (CMC) of C-12-NPAS was 0.22mmolL-1 and the surface tension at the CMC ((CMC)) of C-12-NPAS was 29.4 mN/m. When compared with the traditional surfactants sodium dodecyl benzene sulfonate (SDBS), sodium dodecyl sulfate (SDS), and linear alkylbenzene sulfonate (LAS), the surface properties of C-12-NPAS were found to be superior. The IFT between Daqing crude oil and a weak-base alkaline/surfactant/polymer (ASP) oil flooding system containing 0.1wt% of C-12-NPAS can reach an ultralow level of 2.79x10(-3) mN/m, which was lower than that found for the traditional surfactant heavy alkylbenzene sulfonate (HABS). The salinity and hardness tolerance of C-12-NPAS were much stronger than those found for conventional surfactants, petroleum sulfonate, and LAS. C-12-NPAS also shows improved wetting performance, foamability, and foam stability.



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Nonylphenol-substituted dodecyl sulfonate; surface; interfacial activity; synthesis; weak-base ASP flooding