BRADFORD SCHOLARS

    • Sign in
    View Item 
    •   Bradford Scholars
    • Engineering and Informatics
    • Engineering and Informatics Publications
    • View Item
    •   Bradford Scholars
    • Engineering and Informatics
    • Engineering and Informatics Publications
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.

    Browse

    All of Bradford ScholarsCommunitiesAuthorsTitlesSubjectsPublication DateThis CollectionAuthorsTitlesSubjectsPublication Date

    My Account

    Sign in

    HELP

    Bradford Scholars FAQsCopyright Fact SheetPolicies Fact SheetDeposit Terms and ConditionsDigital Preservation Policy

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular Authors

    Suppression of necking in polyethylene.

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    Publication date
    2002
    Author
    Unwin, A.P.
    Duckett, R.A.
    Ward, Ian M.
    Collins, T.L.D.
    Sweeney, John
    Coates, Philip D.
    Keyword
    Polyethylene
    Necking
    Preorientation
    Peer-Reviewed
    Yes
    
    Metadata
    Show full item record
    Abstract
    The deformation behavior of a particular grade of high-density polyethylene prepared in a number of different ways has been examined. The samples all have an initially isotropic crystalline texture but differ in the levels of network preorientation surviving as a legacy of the melt processing history. Measurements of shrinkage and shrinkage force have been used to characterize this network, and the results suggest that the density of active chains is much lower than found in the main molecular network operating during solid-state drawing. The subnetwork properties vary depending on the level of extrusion and rate of cooling experienced during processing, with those entanglements surviving in the oriented melt at the point of crystallization having a long relaxation time. The presence of this subnetwork can lead to the suppression of necking during subsequent solid-state deformation. The implication is that simple processing procedures can be devised to remove or control the instability associated with necking.
    URI
    http://hdl.handle.net/10454/3884
    Version
    No full-text available in the repository
    Citation
    Unwin, A.P., Collins, T.L.D., Sweeney, J. and Coates, P.D. et al. (2002). Suppression of necking in polyethylene. Journal of Applied Polymer Science. Vol. 86, No. 12, pp. 3135-3147.
    Link to publisher’s version
    http://dx.doi.org/10.1002/app.11337
    Type
    Article
    Collections
    Engineering and Informatics Publications

    entitlement

     
    DSpace software (copyright © 2002 - 2023)  DuraSpace
    Quick Guide | Contact Us
    Open Repository is a service operated by 
    Atmire NV
     

    Export search results

    The export option will allow you to export the current search results of the entered query to a file. Different formats are available for download. To export the items, click on the button corresponding with the preferred download format.

    By default, clicking on the export buttons will result in a download of the allowed maximum amount of items.

    To select a subset of the search results, click "Selective Export" button and make a selection of the items you want to export. The amount of items that can be exported at once is similarly restricted as the full export.

    After making a selection, click one of the export format buttons. The amount of items that will be exported is indicated in the bubble next to export format.