Table IV.

Comparison of Particle Size, PDI, and Zeta Potential with Different Storage Times

Extrudate A	Particle size (nm)	PDI	Zeta potential (mV)
Initial	28.04 ± 1.35	0.184 ± 0.03	−16.82 ± 1.21
1 month	28.04 ± 0.17	0.183 ± 0.03	−17.86 ± 1.73
2 months	29.78 ± 6.81	0.190 ± 0.04	−17.13 ± 1.32
3 months	29.60 ± 4.33	0.179 ± 0.02	−17.26 ± 1.51
6 months	29.05 ± 0.26	0.186 ± 0.01	−18.13 ± 5.92
Extrudate B	Particle size (nm)	PDI	Zeta potential (mV)
Initial	34.11 ± 5.03	0.193 ± 0.04	14.38 ± 2.10
1 month	30.82 ± 2.78	0.189 ± 0.02	15.07 ± 1.68
2 months	30.67 ± 2.93	0.186 ± 0.03	14.68 ± 1.52
3 months	39.66 ± 5.75	0.185 ± 0.03	13.75 ± 1.87
6 months	32.94 ± 0.88	0.189 ± 0.01	13.93 ± 0.76

PDI polydispersity index