1954527 mPEG-PCL methoxy poly(ethylene glycol)-polycaprolactone 36 1954530 mPEG-PCL methotrexate were prepared using biodegradable copolymers 1 1954529 mPEG-PCL methoxy PEG-poly(epsilon-caprolactone) 1 1954528 mPEG-PCL micelles based on functionalized poly(ethylene glycol)-poly(epsilon-caprolactone) 1