Effect of annealing on the mechanical properties of PLA/PCL and PLA/PCL/LTI polymer blends

Tetsuo Takayama, Mitsugu Todo, Hideto Tsuji

    Research output: Contribution to journalArticlepeer-review

    116 Citations (Scopus)

    Abstract

    The effects of annealing on the mechanical properties of polymer blends of poly(lactic acid) (PLA) and poly(ε-caprolactone) (PCL) were investigated. The bending strength and modulus of PLA/PCL tend to increase due to crystallization of the PLA phase by annealing. The mode I fracture energy, J in, of PLA/PCL decreases dramatically due to the suppression of the ductile deformation of the spherical PCL phase by annealing. The immiscibility of PLA and PCL can be improved by adding lysine triisocyanate (LTI) as a result of additional polymerization. The phase transformation due to LTI addition reduces the size of the spherical PCL phase, resulting in higher fracture energy. An annealing process applied to PLA/PCL/LTI further strengthens the microstructure, resulting in effective improvement of the fracture energy.

    Original languageEnglish
    Pages (from-to)255-260
    Number of pages6
    JournalJournal of the Mechanical Behavior of Biomedical Materials
    Volume4
    Issue number3
    DOIs
    Publication statusPublished - Apr 2011

    All Science Journal Classification (ASJC) codes

    • Biomaterials
    • Biomedical Engineering
    • Mechanics of Materials

    Fingerprint

    Dive into the research topics of 'Effect of annealing on the mechanical properties of PLA/PCL and PLA/PCL/LTI polymer blends'. Together they form a unique fingerprint.

    Cite this