Preparation and Characterization of PEG4000 Palmitate/PEG8000 Palmitate-Solid Dispersion Containing the Poorly Water-Soluble Drug Andrographolide

Figure 5

SEM photographs of (a) pure AG, (b) AG-PEG4000 palmitate-PM, (c) AG-PEG4000 palmitate-SD, (d) AG-PEG8000 palmitate-PM, and (e) AG-PEG8000 palmitate-SD.

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(b)

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(d)

(e)