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. 2016 Apr 19;8(4):150. doi: 10.3390/polym8040150

Figure 1.

Figure 1

Viscosity curve of PSU solutions in N,N-Dimethylformamide (DMF) as a function of mass percent of PSU measured at 25 °C. The two-fluid nozzle theoretically only allows the spraying of solutions lower than 15 wt % (solid line).