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Fluorocarbon–hydrocarbon Gemini Surfactant Mixtures in Aqueous Solution by Kenichi Sakai; Megumi Kaji; Yuichiro Takamatsu; Koji Tsuchiya; Kanjiro Torigoe; Kazuyuki Tsubone; Tomokazu Yoshimura; Kunio Esumi; Hideki Sakai; Masahiko Abe is a Materials Science article available to read on EtoBox.

What is Fluorocarbon–hydrocarbon Gemini Surfactant Mixtures in Aqueous Solution about?

The aqueous solution properties of oppositely charged gemini-gemini surfactant mixtures have been studied with a combination of static surface tension, dynamic light scattering (DLS) and cryogenic transmission electron microscope (cryo-TEM) measurements. Two gemini surfactants were employed in this study: one is a partially fluorinated cationic gemini surfactant, 1,2-bis[dimethyl-(3-perfluorohexyl-2hydroxypropyl)ammonium]ethane dibromide, and the other is a novel anionic gemini surfactant having hydrocarbon tail groups (N,N -didodecyl-N,N -dipropanesulfonylethylenediamine). Synergistic surfactant mixtures are frequently exploited to lower the mixed critical micelle concentration (cmc), however, such a decrease in the cmc is not observed in the current study. This suggests that limited mutual miscibility between the fluorocarbon and hydrocarbon tail groups plays a key role for the formation of the adsorbed layer, rather than attractive interactions such as electrostatic forces. On the other hand, spontaneous formation of vesicle-like molecular aggregates is suggested to occur as a result of their synergistic interaction in bulk solution.

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Author

Kenichi Sakai; Megumi Kaji; Yuichiro Takamatsu; Koji Tsuchiya; Kanjiro Torigoe; Kazuyuki Tsubone; Tomokazu Yoshimura; Kunio Esumi; Hideki Sakai; Masahiko Abe

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0927-7757)

Published

2009

Language

EN

Field

Materials Science (Physical Sciences)