Orientation in amorphous polymers II. Characterization of orientation

J. S. Vrentas, C. M. Vrentas, A. H. Bhombal

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


A method based on network theory is developed for characterizing molecular orientation in amorphous polymers. The proposed procedure gives not only the orientation distribution function for the chain segments in the polymer network (and hence the average orientation) but also a quantitative measure of how this orientation is distributed among the various types of entanglement junctions. The orientation of chain segments can be characterized by two parameters, one which gives the average orientation and another which reflects how much orientation is concentrated in long time entanglement junctions. The new method of characterizing orientation is used to interpret tensile strength data for both brittle and ductile failures.

Original languageEnglish (US)
Pages (from-to)965-973
Number of pages9
JournalPolymer Engineering & Science
Issue number12
StatePublished - Aug 1984

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • Polymers and Plastics
  • Materials Chemistry


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