Microemulsion: New Insights into the Ocular Drug Delivery

Figure 4

The pseudoternary phase diagrams of various systems at 25°C: (a) Span 80 + Tween 80 (1 : 1) + n-butanol + IPP +H₂O; (b) Span 20 + Tween 20 (1 : 1) + n-butanol + IPP + H₂O; (c) Span 80 + Tween 80 (1 : 1) + n-butanol (5% chloramphenicol) + IPM + H₂O; (d) Span 80 + Tween 80 (1 : 1) + n-butanol (5% chloramphenicol) + IPP + 0.05% sodium hyaluronate. All the ratios mentioned above are weight ratios except the ratios of Span/Tween are molar ratios. Figure 4 is taken from Lv et al., 2006 [25].

(a)

(b)

(c)

(d)