Development and Characterization of Novel Polyurethane Films Impregnated with Tolfenamic Acid for Therapeutic Applications
Figure 5
SEM images of (a) pure TA, (b) 2% PU, (c) 5% PU, TA-PU films prepared by method I in ratios (d) 1 : 2, (e) 1 : 5, TA-PU films prepared by method II in ratios (f) 1 : 2, (g) 1 : 5.
