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

Figure 8.

Figure 8

First heating run of DSC measurements on (A) spray-dried powder obtained at best parameter settings; (B) rotor milled powder subjected to the three step refinement process with additional sieving at 80 μm; (C) virgin PSU and (D) fine powder obtained after 10 min of ball milling the PSU pellets.