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Linear low density polyethylenes and their blends : Part 5 extensional flow of LLDPE blends

From National Research Council Canada

DOIResolve DOI: https://doi.org/10.1002/pen.760272007
AuthorSearch for: 1; Search for: 1
Affiliation
  1. National Research Council of Canada
FormatText, Article
Abstract
The uniaxial extensional flow at 150°C of two series of blends: I. LLDPE/LLDPE and II. LLDPE/LDPE was examined in full range of concentrations as well as that of accessible in the rheometer strains and strain rates. It was concluded that Series‐I blends containing different LLD‐type polymers are miscible. Their properties can be predicted on the basis of molecular weight and molecular weight distribution. By contrast, excepting low concentration limits, blends of Series‐II are immiscible. Both series show strain hardening, due to higher values of the maximum strain at break. Series‐II seems to be superior (under the test conditions). The stress growth function in shear, computed from the frequency relaxation spectrum, provided a good prediction of the linear viscoelastic component of the stress growth function in uniaxial extension.
Publication date
PublisherWiley
In
  • Polymer Engineering and Science 27, no. 20: 1523–1529.
LanguageEnglish
Peer reviewedYes
NRC numberCNRC 26743
NRC-IGM86-502-449
NPARC number23004078
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Record identifiere433ce73-fc1b-4acf-b204-40f6245bafc1
Record created2018-09-25
Record modified2020-03-17
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