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

    Predicting the location of weld line in microinjection-molded polyethylene via molecular orientation distribution

    • CSV
    • RefMan
    • EndNote
    • BibTex
    • RefWorks
    Thumbnail
    View/Open
    liao_et_al_2019.pdf (2.061Mb)
    Download
    Publication date
    2019-01
    Author
    Liao, T.
    Zhao, X.
    Yang, X.
    Whiteside, Benjamin R.
    Coates, Philip D.
    Jiang, Z.
    Men, Y.
    Keyword
    Microinjection molding
    Molecular orientation
    Polyethylene
    SAXS
    Weld line
    Rights
    © 2020 Wiley. This is the peer-reviewed version of the following article: Liao T, Zhao X, Yang X et al (2019) Predicting the location of weld line in microinjection-molded polyethylene via molecular orientation distribution. Journal of Polymer Science, Part B: Polymer Physics. 57(24): 1705-1715., which has been published in final form at https://doi.org/10.1002/polb.24905. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
    Peer-Reviewed
    Yes
    
    Metadata
    Show full item record
    Abstract
    The microstructure and molecular orientation distribution over both the length and the thickness of microinjection‐molded linear low‐density polyethylene with a weld line were characterized as a function of processing parameters using small‐angle X‐ray scattering and wide‐angle X‐ray diffraction techniques. The weld line was introduced via recombination of two separated melt streams with an angle of 180° to each other in injection molding. The lamellar structure was found to be related to the mold temperature strongly but the injection velocity and the melt temperature slightly. Furthermore, the distributions of molecular orientation at different molding conditions and different positions in the cross section of molded samples were derived from Hermans equation. The degree of orientation of polymeric chains and the thickness of oriented layers decrease considerably with an increase of both mold temperature and melt temperature, which could be explained by the stress relaxation of sheared chains and the reduced melt viscosity, respectively. The level of molecular orientation was found to be lowest in the weld line when varying injection velocity, mold temperature, and melt temperature, thus providing an effective means to identify the position of weld line induced by flow obstacles during injection‐molding process.
    URI
    http://hdl.handle.net/10454/17637
    Version
    Accepted manuscript
    Citation
    Liao T, Zhao X, Yang X et al (2019) Predicting the location of weld line in microinjection-molded polyethylene via molecular orientation distribution. Journal of Polymer Science, Part B: Polymer Physics. 57(24): 1705-1715.
    Link to publisher’s version
    https://doi.org/10.1002/polb.24905
    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.