Suspension-like hardening behavior of HDPE and time-hardening superposition

P.C. Roozemond, V. Janssens, P.C.J. Puyvelde, van, G.W.M. Peters

Research output: Contribution to journalArticleAcademicpeer-review

19 Citations (Scopus)

Abstract

The rheology of solidifying high-density polyethylene (HDPE) is investigated. Experiments on an HDPE were performed with a novel RheoDSC device. Results agree quantitatively with simulations for a suspension of elastic spheres in a viscoelastic matrix except for very low values of space filling (<5%), indicating that the rheological behavior of the crystallizing melt in the frequency range investigated is purely suspension-like. The hardening behavior of the material is characterized in two different ways; a normalized rheological function and a time-hardening superposition (THS) master curve of rheological properties. An improvement is proposed to the procedure for performing THS that was previously used in the literature. Based on this procedure, a novel method for predicting the rheological properties of crystallizing melts is presented.
Original languageEnglish
Pages (from-to)97-109
Number of pages13
JournalRheologica Acta
Volume51
Issue number2
DOIs
Publication statusPublished - 2012

Fingerprint Dive into the research topics of 'Suspension-like hardening behavior of HDPE and time-hardening superposition'. Together they form a unique fingerprint.

  • Cite this