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Recoverable compliance behavior of high‐density polyethylenes
Author(s) -
Plazek Donald J.,
Raghupathi N.,
Kratz Robert F.,
Miller William R.
Publication year - 1979
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1979.070240515
Subject(s) - die swell , creep , materials science , viscosity , high density polyethylene , linear low density polyethylene , composite material , swell , polyethylene , specific gravity , shear (geology) , polymer chemistry , thermodynamics , extrusion , physics
Abstract Eight samples of high‐density polyethylene with weight‐average molecular weights ranging from 5.5 × 10 4 to 17.3 × 10 4 have been studied. In addition to GPC molecular weight characterization, the recoverable compliance, the shear viscosity, and the extrudate swell were determined at temperatures between 138 and 200°C. The range of the maximum creep stresses ranged from 60 to 1840 dynes/cm 2 . The creep recovery response was in the linear or near‐linear range. The results are interpreted in the light of the anomalous results of Mendelson and Finger.