Self-Seeded PE Crystals; Melting and Morphology

  • Ian R. Harrison
  • Gary L. Stutzman


Using a novel DTA technique, it has been reported that polyethylene (PE) single crystals exhibit narrow multiple-peaked thermograms1. The half-width of the individual peaks is usually less than 1.5°C. These peaks widths are comChapauble to those obtained using pure non-polymeric organics. Previous work suggested that discrete transformation temperatures exist for the {100} and {110} fold sectors2. The work that led to this suggestion was performed on lamellae produced by isothermal crystallization from a dilute (.1%) solution of PE in xylene. The solution was heated to the boiling point of xylene prior to being quenched to a particular crystallization temperature. Several questions evolved from this latter paper. The first of these concerns the homogeneity of lamellae produced in this way. Since not all lamellae began to crystallize at the same time, a distribution of sizes appears. Crystals often possessed overgrowths and/or defects. One might also question both the heating rate effects reported and the justification for resolving multiple-peaked thermograms into discrete components. It is the object of this paper to attempt to answer these questions.


Isothermal Crystallization Peak Area Ratio Heating Rate Dependence Crystal Preparation Truncation Ratio 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer Science+Business Media New York 1974

Authors and Affiliations

  • Ian R. Harrison
    • 1
  • Gary L. Stutzman
    • 1
  1. 1.The Pennsylvania State UniversityUniversity ParkUSA

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