Fig. 1: Design of PPFM. | Nature Communications

Fig. 1: Design of PPFM.

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

Fig. 1

A Schematic illustration of the fabrication process of PPFM through the capillary force-driven confinement self-assembling method. B Schematic illustration (middle) and optical image (left) of the formation of a confined area caused by two pieces of superimposed acrylic plates. Dynamic CA transformation (right) of PMMA-co-PDEAEMA copolymer droplet on the surface of the acrylic plate over time. The used droplet is a 10 wt% PMMA-co-PDEAEMA copolymer (MMA/DEAEMA ratio of 0.5) solution. C SEM images and WCA of the as-prepared PPFM surfaces on two sides. The scale bar is 200 μm. D Velocity field of the copolymer solution on each side under different gap widths based on the COMSOL simulation. With increasing gap width, the velocity of the copolymer solution on the A side is larger than that on the B side, resulting in a larger accumulation of the PMMA-co-PDEAEMA copolymer on the A side.

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