Equilibrium and Dynamic Surface Tension Properties of Partially Fluorinated Quaternary Ammonium Salt Gemini Surfactants

Langmuir ◽  
2006 ◽  
Vol 22 (10) ◽  
pp. 4643-4648 ◽  
Author(s):  
Tomokazu Yoshimura ◽  
Akiko Ohno ◽  
Kunio Esumi
Keyword(s):  
Surface Tension ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Gemini Surfactants ◽  
Dynamic Surface Tension ◽  
Dynamic Surface ◽  
Tension Properties

Preparation of Novel Gemini Quaternary Ammonium Salt Cationic Surfactant

2012 ◽  
Vol 174-177 ◽  
pp. 1433-1436 ◽  
Author(s):  
Zong Cheng Miao ◽  
Fang Wang ◽  
Deng Deng ◽  
Yong Ming Zhang ◽  
Xiao Ping Huo ◽  
...  
Keyword(s):  
Surface Tension ◽  
Ammonium Chloride ◽  
Cationic Surfactant ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Foam Stability ◽  
High Surface ◽  
Amine Hydrochloride ◽  
Gemini Cationic Surfactant

In order to obtain some novel cationic surfactants with high surface activity, n-octadecyldimethylamine and epichlorohydrin were used to synthesize 2-hydroxy-1, 3-dis (chloride octadecyl dimethyl ammonium) propane, which was a kind of gemini quaternary ammonium salt. N-octadecyldimethylamine and epichlorohydrin were used to prepare active epoxy intermediate glycidyloctadecyldimethyl ammonium chlorided, and then glycidyloctadecyldimethyl ammonium chlorided was reacted with octadecyldimethyl amine hydrochloride to synthesize the gemini cationic surfactant. FTIR and 1H NMR were used to represent structure of the gemini cationic surfactant. The interface characteristics were studied in detail. The critical micellar concentration (CMC) was determined by surface tension test to obtain the values of CMC and surface tension at CMC. The foam ability and foam stability of the gemini cationic surfactant were also discussed through contrast octadecyltrimethyl ammonium chloride and cetyltrimethyl ammonium chloride.

scholarly journals Equilibrium Surface Tension, Dynamic Surface Tension, and Micellization Properties of Lactobionamide-Type Sugar-Based Gemini Surfactants

2013 ◽  
Vol 62 (6) ◽  
pp. 353-362 ◽  
Author(s):  
Tomokazu Yoshimura ◽  
Shin Umezawa ◽  
Akihiko Fujino ◽  
Kanjiro Torigoe ◽  
Kenichi Sakai ◽  
...  
Keyword(s):  
Surface Tension ◽  
Gemini Surfactants ◽  
Dynamic Surface Tension ◽  
Dynamic Surface ◽  
Equilibrium Surface ◽  
Equilibrium Surface Tension

Molecular Aggregates of Partially Fluorinated Quaternary Ammonium Salt Gemini Surfactants

Langmuir ◽  
2007 ◽  
Vol 23 (22) ◽  
pp. 10990-10994 ◽  
Author(s):  
Keisuke Matsuoka ◽  
Tomokazu Yoshimura ◽  
Takashi Shikimoto ◽  
Juri Hamada ◽  
Mika Yamawaki ◽  
...  
Keyword(s):  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Gemini Surfactants ◽  
Molecular Aggregates

scholarly journals Surface Adsorption Properties and Layer Structures of Homogeneous Polyoxyethylene-Type Nonionic Surfactants in Quaternary-Ammonium-Salt-Type Amphiphilic Gemini Ionic Liquids with Oxygen- or Nitrogen-Containing Spacers

Molecules ◽  
2020 ◽  
Vol 25 (21) ◽  
pp. 4881
Author(s):  
Risa Kawai ◽  
Maiko Niki ◽  
Shiho Yada ◽  
Tomokazu Yoshimura
Keyword(s):  
Surface Tension ◽  
Ionic Liquids ◽  
Ammonium Salt ◽  
Quaternary Ammonium ◽  
Quaternary Ammonium Salt ◽  
Nonionic Surfactants ◽  
Alkyl Chain ◽  
Surface Adsorption ◽  
X Ray ◽  
Layer Structures

The amphiphilic ionic liquids containing an alkyl chain in molecules form nano-structure in the bulk, although they also show surface activity and form aggregates in aqueous solutions. Although insights into the layer structures of ionic liquids were obtained using X-ray and neutron scattering techniques, the nanostructures of ionic liquids remain unclear. Herein, the surface adsorption and bulk properties of homogeneous polyoxyethylene (EO)-type nonionic surfactants (CxEO6; x = 8, 12, or 16) were elucidated in quaternary-ammonium-salt-type amphiphilic gemini ionic liquids with oxygen or nitrogen-containing spacers [2Cn(Spacer) NTf2; (Spacer) = (2-O-2), (2-O-2-O-2), (2-N-2), (2/2-N-2), (3), (5), or (6); n = 10, 12, or 14 for (2-O-2) and n = 12 for all other spacers] by surface tension, small- and wide-angle X-ray scattering, cryogenic transmission electron microscopy, and viscosity measurements. The surface tension of C12EO6 in 2Cn(Spacer) NTf2 with oxygen-containing spacers increased with increasing concentration of C12EO6, becoming close to that of C12EO6 alone, indicating that the amphiphilic ionic liquid adsorbed at the interface was replaced with CxEO6. In contrast, both 2Cn(Spacer) NTf2 with nitrogen-containing spacers and nonionic surfactants remained adsorbed at the interface at high concentrations. In the bulk, it was found that 2Cn(Spacer) NTf2 formed layer structures, in which the spacing depended on the alkyl chain length of CxEO6. These insights are expected to advance the practical applications of amphiphilic ionic liquids such as ion permeation, drug solubilization, and energy delivery systems.

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