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China Surfactant Detergent & Cosmetics ›› 2021, Vol. 51 ›› Issue (6): 546-553.doi: 10.3969/j.issn.1001-1803.2021.06.012

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Research progress of magnetic surfactants

WANG Jun(),ZHANG Chen-long,YANG Xu-zhao,BAI Ya-rong   

  1. Zhengzhou University of Light Industry, Zhengzhou, Henan 450002, China
  • Received:2020-09-19 Revised:2021-05-21 Online:2021-06-22 Published:2021-06-22

Abstract:

Magnetic surfactants are a kind of surfactants with both surface activity and magnetic response. The properties of the surfactants can be simply controlled by the “on” and “off” of external magnetic fields. The structure, synthesis, properties and application of magnetic surfactants are reviewed. The counterions with magnetic response and surface active ions can be combined by electrostatic attraction or complexation. Magnetic surfactants have better surface properties than nonmagnetic parent surfactants, such as lower surface tension and smaller cmc. The surface tension of aqueous solutions of magnetic surfactants can be further reduced by external magnetic field. The magnetic moment of a magnetic surfactant is mainly determined by metal ions, and the magnetic moment of alkyl trimethyl ammonium magnetic surfactant is greater than that of alkyl imidazole magnetic surfactant. Magnetic surfactants exhibit unique properties in drug delivery, microemulsion, nanomaterials and sterilization, which indicates that this kind of surfactants have good development prospect.

Key words: magnetic surfactant, surface activity, synthesis, application

CLC Number: 

  • TQ423