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Solid-State 1H NMR Studies of Degradable Poly(ethylene oxide) Based Hydrogels

✍ Scribed by Kaynoush Naraghi; Bernard Meurer; Pierre J. Lutz

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 118 KB
Volume: 26
Category: Article
ISSN: 1022-1336
DOI: 10.1002/marc.200400605

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✦ Synopsis

Abstract

Summary: Hydrogels, the elastic chains of which are constituted of a short central poly(1,3‐dioxolane) (PDXL) block surrounded by two hydrophilic poly(ethylene oxide) (PEO) blocks, were obtained by free radical homopolymerization of α,ω–methacryloyloxy PEO‐block‐1,3‐PDXL‐block‐PEO macromonomers. The central PDXL block is known to be sensitive to acidic degradation due to the presence of acetal groups. Once swollen to equilibrium, these hydrogels were characterized for their equilibrium swelling degree and their mechanical properties and network degradation studies were carried out.

Representation proposed for the breaking of a PEO‐block‐PDXL‐block‐PEO block copolymer.

imageRepresentation proposed for the breaking of a PEO‐block‐PDXL‐block‐PEO block copolymer.

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