Relationship between fracture mechanism and microstructure in PLA/PCL polymer blends

Tetsuo Takayama, Mitsugu Todo, Kazuo Arakawa

Research output: Contribution to journalArticle

1 Citation (Scopus)


PLA/PCL and PLA/PCL/LTI blends were developed to improve the fracture properties of biodegradable PLA. LTI was blended to improve the miscibility of PLA and PCL. It was shown that the fracture toughness values were dramatically increased due to LTI addition. SEM results also exhibited that PCL spherulites decreases due to LTI addition and therefore, void formation is reduced and local stress concentration is suppressed, resulting in the improvement of the toughness values. The improved miscibility is also closely related to the enhancement of ductile deformation; as a result, the fracture toughness is increased.

Original languageEnglish
Pages (from-to)1169-1172
Number of pages4
JournalKey Engineering Materials
Issue numberPART 2
Publication statusPublished - 2007

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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