CO₂-Switchable Nanoemulsion Based on N,N-dimethyl Oleoaminde-Propylamine (DOAPA) and Sodium Dodecyl Sulphate (SDS)

Abstract

This research reported a CO₂-switchable nanoemulsion that was formulated by dilution of water in oil microemulsion, which was formed by mixture of N,N-dimethyl oleoaminde-propylamine (DOAPA), sodium dodecyl sulphate (SDS), n-hexane, n-butanol, and water. A reversible switch process was observed between a monophasic nanoemulsion and complete phase separation at R = 1:1 with the CO₂ and N₂ bubbling alternately. The phase separation was not found, but the reversible switch between single phase nanoemulsion was detected by zeta potential, electrical conductivity, and dynamic light scattering at R = 1:1.5 and 1.5:1.

GRAPHICAL ABSTRACT

Keywords:

• CO₂
• microemulsion
• switchable nanoemulsion