A free-standing, sheet-shaped, “hydrophobic” biomaterial containing polymeric micelles formed from poly(ethylene glycol)-poly(lactic acid) block copolymer for possible incorporation/release of “hydrophilic” compounds

► We prepared a novel sheet-shaped biomaterial in which polymeric micelles are uniformly dispersed. ► Fluorescent images proved that polymeric micelles were uniformly dispersed. ► This facile technique can be a tool for fabricating biomaterials for drug release.