Table 2.

The effect of different preparation methods on the physicochemical properties of blank PCL and mePEG-PCL nanoparticles (n = 3 ± SD).

	PF68 concentration (v/v, %)	Mean diameter ± SD (nm)	PDI ± SD	Zeta potential ± SD (mV)
PCL nanoparticles	0	150 ± 0.5	0.08 ± 1.9	−22 ± 0.009
	0.5	163 ± 0.5	0.10 ± 0.5	−20 ± 0.02
	2	194 ± 0.8	0.09 ± 0.4	−15 ± 0.006
mePEG-PCL nanoparticles	0	71 ± 0.8	0.22 ± 0.004	−22 ± 1.9
	0.5	95 ± 3.9	0.50 ± 0.03	−27 ± 2.1
	2	92 ± 1.4	0.31 ± 0.04	−20 ± 3.8