Analyzing Temperature Dependent Shrinkage Stress Evolution in High Speed Spun, High Molecular Weight Poly(ethylene Terephthalate) Filaments

Jung Yul Lim, Sang Yong Kim

Research output: Contribution to journalArticlepeer-review

1 Scopus citations

Abstract

The effects of fiber structure on temperature-dependent shrinkage stress evolution in high speed spun, high molecular weight poly(ethylene terephthalate) (PET) filaments are investigated. Based on the hypothesis that thermal stress evolution with temperature is a relaxation spectrum of a series of oriented structural elements, a measured shrinkage stress/temperature curve is fitted using a model that is the sum of three component peaks. The model, composed of three Pearson-Pisa functions, describes the experimental curves very well. Variations in fiber structure such as amorphous orientation and crystalline development are reflected signally in changes in the calculated curve parameters of component peaks. The curve resolution analysis reveals the contribution of each kind of ordered region to the entire shrinkage stress evolution in high speed spun, high molecular weight PET filaments and its variation with fiber structure.

Original languageEnglish (US)
Pages (from-to)329-335
Number of pages7
JournalTextile Research Journal
Volume71
Issue number4
DOIs
StatePublished - Apr 2001
Externally publishedYes

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Polymers and Plastics

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