Effect of chain structure on ductile-brittle transition in some polyestercarbonates

S. S. Min, S. S. Lee, J. Y. Jho

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


The relation between chain structure and ductile-brittle transition (DBT) in polyestercarbonates (PEC) was investigated by measuring the fracture energy and observing the fracture surfaces of a homologous series of PEC containing phthalate units. DBTs were determined in terms of various test conditions including specimen thickness, test speed, and notch-tip radius. With an increase in the phthalate content, transition was found to shift to a thinner specimen, a lower test speed, and a higher notch-tip radius. It was concluded that the DBT is directly affected by the extent of entanglement in these copolymers.

Original languageEnglish
Pages (from-to)855-859
Number of pages5
JournalPolymer Testing
Issue number8
Publication statusPublished - 2001


  • Chain structure
  • Ductile-brittle transition
  • Polyestercarbonates

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics


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