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Experimental study demonstrates self-assembly of polycaprolactone micelles and hollow nanosphere formation, highlighting a block-copolymer-free method.
A block-copolymer-free strategy has been used to form micelles by the self-assembly of poly(ε-caprolactone) (PCL) and a graftlike copolymer which has a hydrophilic backbone and short PCL side-chains (see schematic representation). Affinity between the PCL homopolymer and the PCL short branches appears to stabilize the micelles. The hydrophobic polyester core can be selectively hydrolyzed by lipase to give hollow spheres, as shown by transmission electron microscopy.
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Liu et al. (2002) studied this question.
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