Table 2. Average Particle Sizes, PDI, ζ Potential, and EE % of Different BO/PLGA–PCL NP Formulas.

	ratio
formula code	PLGA	PCL	hydrodynamic size (nm)	PDI	ζ potential (mV)	EE %
P1	1	1	230.3 ± 3.7	0.13 ± 0.03	–20.36 ± 4.89	80.59 ± 3.37
P2	2	1	567.5 ± 35.55	0.96 ± 0.08	–5.69 ± 2.79	73.17 ± 4.20
P3	3	1	1463.7 ± 159.6	0.56 ± 0.004	–5.66 ± 2.02	36.34 ± 4.21
P4	1	2	1174.0 ± 148.9	0.66 ± 0.3	–2.84 ± 1.11	27.04 ± 1.08
P5	1	3	1025.4 ± 120.4	0.76 ± 0.2	–1.89 ± 0.57	43.15 ± 3.90