Chapter 3

Self-Assembly of Nonionic Surfactants in Room-Temperature Ionic Liquids

Kenichi Sakai

Kenichi Sakai

Department of Pure and Applied Chemistry, Faculty of Science and Technology, Research Institute for Science and Technology, Tokyo University of Science, Noda, Chiba, Japan

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Takeshi Misono

Takeshi Misono

Department of Pure and Applied Chemistry, Faculty of Science and Technology, Research Institute for Science and Technology, Tokyo University of Science, Noda, Chiba, Japan

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Masahiko Abe

Masahiko Abe

Department of Pure and Applied Chemistry, Faculty of Science and Technology, Research Institute for Science and Technology, Tokyo University of Science, Noda, Chiba, Japan

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Hideki Sakai

Hideki Sakai

Department of Pure and Applied Chemistry, Faculty of Science and Technology, Research Institute for Science and Technology, Tokyo University of Science, Noda, Chiba, Japan

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First published: 31 July 2015
Citations: 2

Summary

Surfactants form molecular assemblies in aqueous solutions. The assembly type strongly depends on surfactant concentration as well as temperature, thus various types of assemblies such as micelles, lyotropic liquid crystals, etc. are formed. In a manner similar to such aqueous surfactant systems, surfactants can also form molecular assemblies in room-temperature ionic liquids (RTILs). In this chapter, we focus on self-assembly of nonionic surfactants in RTILs stressing on thermodynamics of micellization of nonionic surfactants in RTILs, characterization of binary phase behaviors of nonionic surfactants with RTILs, and adsorption characteristics of nonionic surfactants at solid/RTIL interfaces. A possible future direction of studies concerning RTILs from the standpoint of colloid and interface chemistry is also addressed.

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