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Journal of Materials Science

, Volume 26, Issue 16, pp 4288–4292 | Cite as

Characterization of molecular orientation by differential scanning calorimetry

Part III Injection blow moulding of polystyrene
  • M. G. Rogers
Papers

Abstract

Differential scanning calorimetry was used to study part quality from an injection blow moulding machine producing polystyrene thin-walled containers. Cavity-to-cavity, within cavity and shot-to-shot problems were detected. Multiple relaxation peaks observed in the temperature range Tg-TLL had the relationship Tj=1.02 Ti K, for TLL⩾Tj> Ti⩾ Tg and (j−i)=1. Based on some simple assumptions, a model was developed that allowed the multiple peaks be resolved between the injection moulding and blowing steps of the process and into a three-dimensional array.

Keywords

Polymer Differential Scanning Calorimetry Polystyrene Calorimetry Molecular Orientation 
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

© Chapman & Hall 1991

Authors and Affiliations

  • M. G. Rogers
    • 1
  1. 1.Research and Development LaboratoryDow Chemical Canada Inc.SarniaCanada

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