Linear poly(?-caprolactone) (PCL) is a biodegradable polymer. This polymer as well as its degradation products are biocompatible within the human body and because of this property the FDA has approved its use in drug delivery devices. However only limited research has investigated the properties of cyclic PCL, which is expected to have unique and complementary properties relative to the well-studied linear PCL. Page 11 of the CELT Research Abstract Booklet.