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  • Title: Biodegradable poly(ethylene oxide)/poly(epsilon-caprolactone) multiblock copolymers.
    Author: Cohn D, Stern T, González MF, Epstein J.
    Journal: J Biomed Mater Res; 2002 Feb; 59(2):273-81. PubMed ID: 11745563.
    Abstract:
    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.
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