Flow‐induced crystallization of linear polyethylene above its normal melting point

Victor Tan, Costas G. Gogos

Research output: Contribution to journalArticle

47 Scopus citations

Abstract

The phenomenon of flow‐induced crystallization was investigated using a linear polyethylene above its normal melting point flowing continuously in a Biconical Rheometer. It was found that the resin crystallized in the superheated state at rates which increased with increasing shear rate and decreasing temperature. A method of analysis of the temperature dependence of the various stages of flow induced crystallization is proposed. It deals with and attempts to explain the experimental fact that a higher viscosity enhances the rate of flow‐induced crystallization in contrast to the effect of viscosity on the rate of quiescent crystallization. Some of the flow‐induced crystallization samples were transparent and exhibited a high DSC thermogram “tail”.

Original languageEnglish (US)
Pages (from-to)512-525
Number of pages14
JournalPolymer Engineering & Science
Volume16
Issue number7
DOIs
StatePublished - Jul 1976
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Materials Chemistry
  • Chemistry(all)
  • Polymers and Plastics

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