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Poly-α,β-(N-(2-hydroxyethyl)-L-aspartamide)-g-poly(1,3-trimethylene carbonate) amphiphilic graft co-polymer as a potential drug carrier

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A biodegradable amphiphilic graft polymer was successfully synthesized by grafting hydrophobic poly(1,3-trimethylene carbonate) (PTMC) sequences onto a hydrophilic poly-α,β-(N-(2-hydroxyethyl)-L-aspartamide) (PHEA) backbone. The graft polymer, PHEA-g-PTMC, was synthesized by ring-opening polymerization initiated by the macroinitiator PHEA bearing hydroxyl groups without adding any catalyst. The graft polymer was characterized by Fourier transform infrared spectroscopy, 1H-nuclear magnetic resonance spectroscopy, combined size-exclusion chromatography and multiangle laser light scattering analysis. Two drugs with distinct water solubility, prednisone acetate and tegafur, were encapsulated in the PHEA-g-PTMC nanoparticles. The in vitro release of two drugs from PHEA-g-PTMC nanoparticle drug-delivery systems was investigated.
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Keywords: AMPHIPHILIC GRAFT CO-POLYMER; BIODEGRADABLE; DRUG DELIVERY; NANOPARTICLES; RING-OPENING POLYMERIZATION

Document Type: Short Communication

Publication date: 2006-08-01

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