Journal
JOURNAL OF BIOMEDICAL MATERIALS RESEARCH
Volume 59, Issue 2, Pages 273-281Publisher
JOHN WILEY & SONS INC
DOI: 10.1002/jbm.1242
Keywords
poly(caprolactone); poly(ethylene oxide); poly(ethylene glycol); biodegradation; polyurethane; block copolymer
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A series of poly(ethylene oxide) (PEO)/poly(epsilon -caprolactone) (PCL) containing biodegradable poly(ether ester urethane)s, covering a wide range of compositions, were synthesized and characterized. The synthesis consisted of a two-step process. During the first step, the ring-opening reaction of epsilon -caprolactone was carried out, initiated by the hydroxyl terminal groups of the PEO chain. The second step involved the chain extension of these PCL-PEO-PCL trimers with hexamethylene diisocyanate. By varying either the ethylene oxide/epsilon -caprolactone ratio or the length of both segments, we obtained a series of polymers having different morphologies and displaying a broad range of properties. (C) 2001 John Wiley & Sons, Inc.
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