Controlled antiseptic release by alginate polymer films and beads

► Alginate encapsulates the antiseptic povidone iodine (PVPI). ► Free standing films and beads of alginate and PVPI are formed. ► The release of the PVPI from the sodium alginate films and calcium alginate beads is within minutes and hours respectively. ► Films and beads with PVPI have antimicrobial properties.