Eight samples of high‐density polyethylene with weight‐average molecular weights ranging from 5.5 × 104 to 17.3 × 104 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/cm2. 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.
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Plazek et al. (1979) studied this question.
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