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    Effect of hydroxyapatite morphology/surface area on the rheology and processability of hydroxyapatite polyethylene composite.

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    Publication date
    2009-08-10T12:29:08Z
    Author
    Joseph, R.
    McGregor, W.J.
    Martyn, Michael T.
    Turner, K.E.
    Coates, Philip D.
    Keyword
    Hydroxyapatite
    Composite
    Rheology
    Injection moulding
    Polyethylene
    Morphology
    Surface area
    Peer-Reviewed
    Yes
    
    Metadata
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    Abstract
    The commercial success of hydroxyapatite (HA) filled polyethylene composite has generated growing interest in improving the processability of the composite. A number of synthetic procedures and post synthesis heat treatment of HA has lead to the availability of powders with widely varying morphological features. This paper addresses the effect of morphological features of HA on the rheology and processability of an injection-moulding grade HA-HDPE composite. The results showed that low surface area HA filled composite exhibited better injection processing characteristics through improved rheological responses. The effect of reducing the surface area of the filler is to require less polyethylene to wet the filler and allows more polyethylene to be involved in the flow processes. These changes reduced the temperatures and pressures required for successful processing.
    URI
    http://hdl.handle.net/10454/3261
    Version
    No full-text available in the repository
    Citation
    Joseph, R., McGregor, W.J., Martyn, M.T., Tanner, K.E. and Coates, P.D. (2002). Effect of hydroxyapatite morphology/surface area on the rheology and processability of hydroxyapatite polyethylene composite. Biomaterials. Vol. 23. No. 21, pp. 4295-4302.
    Link to publisher’s version
    http://dx.doi.org/10.1016/S0142-9612(02)00192-8
    Type
    Article
    Collections
    Engineering and Informatics Publications

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