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Effect of preparation method and flow rate on PNP morphology and size. TEM images of PAX-loaded PNPs of PMCL-50 (r = 0.25) prepared using the bulk preparation method (A) and in the two-phase microfluidic reactor at different flow rates (B–D), and (E) Dh,eff vs Q for the PNPs in (A)–(D); Q = 0 μL/min designates the bulk-prepared PNPs. Scale bars are 200 nm.
