SEM images of particle morphology evolution during a seeded emulsion polymerization: (a-c) seed synthesized with methanol-water 1:1; (d-f) seed synthesized with methanol-water 4:1; (g-i) seed synthesized with methanol-water 6:1. Scale bar is 200 nm.
SEM images of anisotropic dumbbell shape polystyrene seed particles (a) low styrene concentration during titration; (b) high styrene concentration during titration. Scale bar is 500 nm
Morphology transition from multilobes to single protrusion during the polymerization with 4:1 methanol to seed ratio
Different particle morphologies (multi-lobe and single protrusion) formed by adding different crosslinker amount in the second polymerization: a) 1wt.%; b) 0.5 wt.%, c) 0 wt.%. Scale bar: 500nm
