Fig. 4: Gas switchable emulsion separation. | Nature Communications

Fig. 4: Gas switchable emulsion separation.

From: Scalable and switchable CO2-responsive membranes with high wettability for separation of various oil/water systems

Fig. 4

A Photographs of various O/W and W/O emulsions under CO2/N2 stimulation and the corresponding optical microscopic images. The scale bar is 20 μm. B, C Separation efficiency and oil or water content of PPFM-0.5 with gap width of 150 μm for the W/O (B) and O/W (C) mixture systems at 25 °C under CO2/N2 stimulation. D Adhesion force-distance curves of the underoil water or underwater oil droplet on the PPFM-0.5 surface with gap width of 150 μm under CO2/N2 stimulation. E 2D scatter plot of noncovalent interactions between adsorbed species and DEAEMA (top)/protonated DEAEMA (down). The error bars represent the standard deviation and were calculated on the basis of at least three data points measured from different samples.

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