Fig. 2. Microstructures of conventional polymer powders and emulsion polymer, GF-1. (a) Regular blocky microstructures of conventional polymer powders at 50 μm scale; (b) flat, smooth surface of conventional polymer powders at 10 μm scale; (c) spherical particles attached to the surface of the emulsion polymer at 10 μm scale; (d) filamentous surfaces of emulsion polymer at 5 μm scale and small particles attached on them.
