• Login
    View Item 
    •   KovsieScholar Home
    • Electronic Theses and Dissertations
    • All Electronic Theses and Dissertations
    • View Item
    •   KovsieScholar Home
    • Electronic Theses and Dissertations
    • All Electronic Theses and Dissertations
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    In situ preparation and properties of rubber/inorganic oxide nanocomposites

    Thumbnail
    View/Open
    Mokhothuth_PhD.pdf (6.159Mb)
    Date
    2014-01
    Author
    Mokhothu, Thabang Hendrica
    Metadata
    Show full item record
    Abstract
    The present paper is concerned with the preparation of a filled elastomer by means the non-conventional bottom-up approach to polymer composites, alternatively with the conventional mechanical compounding of preformed filler particles with rubber. EPDM rubber was modified with in situ generated silica particles prepared by means of a sol-gel process adopting a solution process. The used synthetic procedure permitted the preparation of highly filled rubbers (up to 40 wt% of silica) with silica particle dimensions ranging from 0.2 to 2 μm. Equilibrium swelling and extraction tests indicated a hindering effect of the presence of in situ generated silica on the vulcanization process which reduced the cross-linking degree of the rubber matrix. Both tensile tests and dynamic-mechanical analysis showed a significant improvement in the mechanical properties due to the presence of the reinforcing filler, with an enhancement more significant than that expected from a simple hydrodynamic reinforcing mechanism.
    URI
    http://hdl.handle.net/11660/2195
    Collections
    • All Electronic Theses and Dissertations
    • Doctoral Degrees (Chemistry)

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback
     

     

    Browse

    All of KovsieScholarCommunities & CollectionsBy Issue DateAuthorsTitlesSubjectsThis CollectionBy Issue DateAuthorsTitlesSubjects

    My Account

    LoginRegister

    Statistics

    View Usage Statistics

    DSpace software copyright © 2002-2016  DuraSpace
    Contact Us | Send Feedback