Thermal properties and morphology changes in degradation process of poly(L-lactide-co-glycolide) matrices with risperidone.Determining thermal properties and morphology seems to be useful in the analysis of release and degradation processes form polymeric materials.  Thermal characteristics were tested by means of differential scanning calorimetry, and the morphology was evaluated using a scanning electron microscope.  The analysis of thermal properties and morphology allowed us to explain degradation process. 
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