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: Chapter in Book/Report/Conference proceedingConference 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
strain rate
contraction
temperature
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: Chapter in Book/Report/Conference proceedingConference 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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