Surface Deposition and Coalescence and Coacervation Phase Separation Methods: In Vitro Study and Compatibility Analysis of Eudragit RS30D, Eudragit RL30D, and Carbopol-PLA Loaded Metronidazole Microspheres

Figure 7

FTIR spectrum of (a) pure drug metronidazole, (b) formulation F26, (c) formulation F28, Eudragit RS30D, and Eudragit RL30D, respectively. : % transmittance or absorbance.

(a)

(b)

(c)