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- W2390600567 abstract "A series of novel zwitterionic surfactants with two hydrophilic and two hydrophobic groups in the molecule (so-called heterogemini surfactants) are synthesized. One of the hydrophilic groups is a phosphodiester anion and the other is a quaternary ammonium salt. Two methylene groups separate the two headgroups. A family of zwitterionic Gemini surfactants with two hydrophilic and two hydrophobic groups in the molecule are synthesized by reaction of fatty alcohols with the cyclic ethylene chlorophosphate to yield intermediates, which are subsequently ring-opened by an alkyldimethylamine. Four products are produced in mass percents of 32%,54%,18% and 28% respectively. Reaction progress is supervised by TLC. Structures of products and intermediates are identified by ~1HNMR and IR, the results of elemental analysis showed that the mass variations of contents of C,H,O,N in the four products with that of formula are less than 0.3%. the critical micelle concentration (cmc) of four surfactants at 30℃ are 12.5, 9.2, 7.8 and 7.7×10~ -6 mol/L respectively." @default.
- W2390600567 created "2016-06-24" @default.
- W2390600567 creator A5054524627 @default.
- W2390600567 date "2006-01-01" @default.
- W2390600567 modified "2023-09-23" @default.
- W2390600567 title "Synthesis and Characterization of Four Zwitterionic Surfactants in Oil Production" @default.
- W2390600567 hasPublicationYear "2006" @default.
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