Journal
MACROMOLECULAR RAPID COMMUNICATIONS
Volume 31, Issue 7, Pages 619-624Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/marc.200900803
Keywords
amphiphilic copolymer; biodegradable; click chemistry; polyesters; poly(3-hydroxyalkanoate)
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A new synthesis of amphiphilic biodegradable copolymers consisting of hydrophobic poly(3-hydroxyalkanoate) (PHA) backbone and hydrophilic poly(ethylene glycol) (PEG) units as side chains is described. Poly[(3-hydroxyoctanoate)-co-(3-hydroxyundecenoate)] (PHOU) was first methanolyzed and its unsaturated side chains were quantitatively oxidized to carboxylic acid. Esterification with propargyl alcohol led to an alkyne-containing clickable PHA in 71% conversion. Its reactivity was successfully demonstrated by grafting azide-terminated PEG chains of 550 and 5 000 g . mol(-1), respectively. All products were fully characterized using GPC, H-1, and COSY NMR.
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