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    Dynamic mechanical studies of hydrolytic degradation in isotropic and oriented Maxon B.

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    Publication date
    2009-07-28T09:10:50Z
    Author
    Ward, Ian M.
    Hill, S.P.
    Klein, P.G.
    Rose, J.
    Montez De Oca, H.
    Farrar, D.
    Keyword
    Bioresorbables
    Maxon
    DMA
    Degradation
    Mechanical properties
    Peer-Reviewed
    Yes
    
    Metadata
    Show full item record
    Abstract
    Hydrolytic degradation studies have been undertaken on Maxon B, a bioresorbable block copolymer of polyglycolic acid (PGA) and polytrimethylene carbonate (TMC). Isotropic and oriented samples were studied by dynamic mechanical measurements over a wide range of temperatures. In addition to mechanical tests, water content and mass loss were also determined on the degraded samples. At early stages of degradation water content was the dominant factor and plasticisation lead to reductions in the glass transition temperatures of the PGA and TMC components. Orientation was shown to give significant improvements in the mechanical properties, including overall increases in modulus and an increase in the glass transition temperature of the PGA component, which is important for the behaviour at body temperature (37 °C). Oriented samples also showed significantly less reduction in mechanical properties on degradation. Simple one-dimensional Takayanagi models were used to provide useful insight into the understanding of the mechanical behaviour.
    URI
    http://hdl.handle.net/10454/3171
    Version
    No full-text available in the repository
    Citation
    Ward, I.M.Hill, S.P., Klein, P.G. and Rose, J. et al. (2006). Dynamic mechanical studies of hydrolytic degradation in isotropic and oriented Maxon B. Biomaterials. Vol. 27, No. 17, pp. 3168-3177.
    Link to publisher’s version
    http://dx.doi.org/10.1016/j.biomaterials.2006.01.025
    Type
    Article
    Collections
    Engineering and Informatics Publications

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