Strain hardening in uniaxial elongation vs. temperature for random copolymer melts with high comonomer content

John E. Mills, Krishnamurthy Jayaraman, Bhaskar Patham, Dinshong Dong, Michael Wolkowicz

    Research output: ResearchConference contribution

    • 1 Citations

    Abstract

    Two metallocene-catalyzed random copolymers with a polyethylene backbone and octene comonomer content of 20 wt% and 38 wt% were tested in uniaxial extensional flow at different temperatures. Sparse LCB was detected in both melts with these measurements. The strain hardening parameter at the lowest strain rate was found to be greater for EO3, the material with the smaller degree of LCB. The temperature dependence of the strain hardening parameter was also greater for EO3 than for EO1. These trends may be related to the two model parameters used by Wagner and coworkers representing branch content and the maximum tube diameter contraction.

    LanguageEnglish (US)
    Title of host publicationAIP Conference Proceedings
    Pages357-359
    Number of pages3
    Volume1027
    DOIs
    StatePublished - 2008
    Event15th International Congress on Rheology - Monterey, CA, United States
    Duration: Aug 3 2008Aug 8 2008

    Other

    Other15th International Congress on Rheology
    CountryUnited States
    CityMonterey, CA
    Period8/3/088/8/08

    Profile

    strain hardening
    elongation
    copolymers
    temperature
    strain rate
    contraction
    polyethylenes
    tubes
    trends
    temperature dependence

    Keywords

    • Random copolymers
    • Strain hardening
    • Temperature dependence
    • Uniaxial extension

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

    Cite this

    Mills, J. E., Jayaraman, K., Patham, B., Dong, D., & Wolkowicz, M. (2008). Strain hardening in uniaxial elongation vs. temperature for random copolymer melts with high comonomer content. In AIP Conference Proceedings (Vol. 1027, pp. 357-359). DOI: 10.1063/1.2964690

    Strain hardening in uniaxial elongation vs. temperature for random copolymer melts with high comonomer content. / Mills, John E.; Jayaraman, Krishnamurthy; Patham, Bhaskar; Dong, Dinshong; Wolkowicz, Michael.

    AIP Conference Proceedings. Vol. 1027 2008. p. 357-359.

    Research output: ResearchConference contribution

    Mills, JE, Jayaraman, K, Patham, B, Dong, D & Wolkowicz, M 2008, Strain hardening in uniaxial elongation vs. temperature for random copolymer melts with high comonomer content. in AIP Conference Proceedings. vol. 1027, pp. 357-359, 15th International Congress on Rheology, Monterey, CA, United States, 8/3/08. DOI: 10.1063/1.2964690
    Mills JE, Jayaraman K, Patham B, Dong D, Wolkowicz M. Strain hardening in uniaxial elongation vs. temperature for random copolymer melts with high comonomer content. In AIP Conference Proceedings. Vol. 1027. 2008. p. 357-359. Available from, DOI: 10.1063/1.2964690
    Mills, John E. ; Jayaraman, Krishnamurthy ; Patham, Bhaskar ; Dong, Dinshong ; Wolkowicz, Michael. / Strain hardening in uniaxial elongation vs. temperature for random copolymer melts with high comonomer content. AIP Conference Proceedings. Vol. 1027 2008. pp. 357-359
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