Table 3.

Zeta potential values of the diluted dispersions as a function of the PVA concentration and particle size distribution of Mel (±SD)

Samples	Particle size distribution			Zeta potential (mV)
	d(0.1)	d(0.5)	d(0.9)
	Particle size (µm)
Mel PVA 0%	2.508±1.100	5.762±2.700	135.640±12.900	−30.7
Mel PVA 0.25%	0.070±0.001	0.150±0.009	1.478±0.0400	−20.9
Mel PVA 0.50%	0.067±0.001	0.130±0.005	0.371±0.010	−16.1
Mel PVA 0.75%	1.235±0.006	2.611±0.018	5.560±0.070	−15.7

Note: d(0.1), d(0.5), d(0.9) is the maximum particle diameter below which 10%, 50%, and 90%, respectively, of the sample volume exists.

Abbreviations: Mel, meloxicam; PVA, poly(vinyl alcohol).