Fig. 4
From: Gemcitabine-incorporated polyurethane films for controlled release of an anticancer drug
Cumulative release of gemcitabine from gemcitabine-incorporated polyurethane films. About 90% of the load was released in a day from the GPU film, but the cumulative release in a day decreased to 26% when the GPU film was enveloped by PU barrier films (PU-GPU-PU). When the GPU film was sandwiched in between the silicone and polyurethane barrier films, 56% of the drug load was released in a day (Si-GPU-PU)