Preparation of Polypropylene Powder by Dissolution-Precipitation Method for Selective Laser Sintering

Figure 5

SEM graphs of PP powders prepared on different conditions: (a), (b) dissolution temperature 166°C; (c), (d) dissolution temperature 166°C and solid-to-solvent ratio 0.067g/ml; (e), (f) dissolution temperature 166.0°C, solid-to-solvent ratio 0.067g/ml, and pressure 0.7MPa.

(a)

(b)

(c)

(d)

(e)

(f)