XRPD Study of Transdermal Patch

A transdermal patch is a device that combines a pharmaceutical formulation with other components, such as a protective liner, an adhesive, a rate-controlling membrane, a reservoir or a backing layer, or a combination of these components.


XRPD characterization of a transdermal device may cover the properties of pharmaceutical formulation: crystallinity and polymorphic impurities in bulk or as distribution (a test case is available here), or the material properties of patch components, such as- polymer structures, films and adhesives.