CO2-switchable emulsions with controllable size and viscosity† † Electronic supplementary information (ESI) available. See DOI: https://doi.org/10.1039/d3sc00228d

ABSTRACT: CO2-responsive emulsions have attracted considerable attention in recent years because of their biocompatibility and easy removal of CO2. However, most CO2-responsive emulsions are only used in stabilization and demulsification processes. In this paper, we report CO2-switchable oil-in-dispersion (OID) emulsions co-stabilized with silica nanoparticles and anionic NCOONa, in which the required concentrations of NCOONa and silica particles were as low as 0.01 mM and 0.0001 wt%, respectively. Besides reversible emulsification/demulsification, the aqueous phase containing the emulsifiers was recycled and reused with the CO2/N2 trigger. More importantly, the properties of the emulsions, such as droplet sizes (40–1020 μm) and viscosities (6–2190 Pa s), were intelligently controlled by the CO2/N2

SUBMITTER: Jiang J 

PROVIDER: S-EPMC10034261 | biostudies-literature | 2023 Feb

REPOSITORIES: biostudies-literature