Abstract
A novel amphiphilic branch-ring-branch tadpole- shaped (linear-poly(e-caprolactone))-b-(cyclic-poly(ethylene ox- ide))-b-(linear-poly(e-caprolactone)) ((l-PCL)-b-(c-PEO)-b-(l-PCL)) was synthesized by combination of glaser coupling reaction with ring-opening polymerization (ROP) mechanism. The self- assembling behaviors of (l-PCL)-b-(c-PEO)-b-(l-PCL) and their p- shaped analogs of poly(e-caprolactone)/poly (ethylene oxide))- b-poly(ethylene oxide)-b-(poly(e-caprolactone)/poly(ethylene ox- ide) with comparable molecular weight in water were prelimi- narily investigated. The results showed that the micelles formed from the former took a fiber look, however, that formed from the latter took a spherical look. V C 2012 Wiley Peri- odicals, Inc. J Polym Sci Part A: Polym Chem 50: 3095-3103, 2012
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