PCL(2k)-mPEG(1k) is a micelle-forming polymer with hydrophobic polycaprolactone tethered to a hydrophilic PEG. The PCL segment can be used to encapsulate hydrophobic drugs while the PEG can form a tight shell around the core to minimize drug degradation. The polymer is biodegradable via hydrolytic attack on the PCL ester bonds.
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