Polysulfide networks. in Situ formation and characterization of the elastomeric behavior

Giona Kilcher, Lei Wang, Craig Duckham, Nicola Tirelli

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Polysulfides with narrow polydispersity and variable chain length and density of polymerizable units have been synthesized through the use of a methacrylate-bearing and thiol-reactive compound as an endcapper for episulfide anionic polymerization. These macromonomers have been photopolymerized to yield materials with controlled cross-linking density, which translates into a controlled number of cross-links, branching points, and dead-ends. The resulting networks show elastomeric behavior that can be easily described through a simple affine chain model; in the analysis of the network behavior we here also present the calculation of a solventindependent parameter for rationalizing the behavior of the Flory-Huggins parameters, These materials combine simple preparation (→ in situ processes), easy description of the mechanical properties, and responsiveness (to oxidation-not studied here), features that could make them attractive for biomedical applications. © 2007 American Chemical Society.
    Original languageEnglish
    Pages (from-to)5141-5149
    Number of pages8
    JournalMacromolecules
    Volume40
    Issue number14
    DOIs
    Publication statusPublished - 10 Jul 2007

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