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Synthesis and Characterization of Multifunctional Surfactants in Oil‐Field Protection Applications
Author(s) -
Negm Nabel A.,
Aiad Ismail A.
Publication year - 2007
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-007-1016-8
Subject(s) - chemistry , critical micelle concentration , surface tension , cationic polymerization , pulmonary surfactant , elemental analysis , micelle , chemical engineering , pour point , fourier transform infrared spectroscopy , melting point , raw material , organic chemistry , nuclear chemistry , aqueous solution , biochemistry , physics , quantum mechanics , engineering
A series of cationic surfactants was prepared using economical raw materials. The chemical structures of the prepared compounds were confirmed using elemental analysis, FTIR and 1 H‐NMR spectra, and melting point determination. The synthesized surfactants were evaluated as oil‐field protective additives. In this regard, several surface properties of the synthesized surfactants were studied including surface tension, critical micelle concentration, effectiveness, efficiency, maximum surface excess and minimum surface area. The results obtained from the surface activity measurements were correlated to their chemical structures. The emulsification power measurements for solutions of these surfactants showed their low emulsifying tendency towards paraffin and crude oil. The synthesized surfactants also exhibited high biocidal activity towards gram‐positive and gram‐negative bacteria and fungi. This activity was increased by increasing the hydrophobic chain length. The corrosion inhibition measurement of these surfactants for mild steel alloys in acidic media using a weight loss technique showed good protection of mild steel alloys against acidic environments. These properties qualify the synthesized compounds as economical oil‐field protective additives.