Fracture characterization of biodegradable PLLA polymer blends

Mitsugu Todo, Ayako Harada, Hideto Tsuji

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    3 Citations (Scopus)


    Biodegradable PLLA was toughened by blending with four different ductile bio-polymers such as PBS, PCL, PBSL and PBSC using a technique of melt-mixing. Mechanical properties were measured and compared to assess their effectiveness as a blending partner for PLLA. It was found that the bending properties are the best with PBS; on the other hand, the mode I fracture toughness and impact resistance are most improved with PBSC. For PLLA/PBSC, FE-SEM observation showed that the fracture surface exhibited ductile fracture with elongated fibrils, and POM result clearly indicated that the largest damage zone is generated in the vicinity of crack-tip, suggesting the highest energy dissipation in the crack-tip region.

    Original languageEnglish
    Title of host publicationProceedings of the 16th International Conference on Composite Materials, ICCM-16 - "A Giant Step Towards Environmental Awareness
    Subtitle of host publicationFrom Green Composites to Aerospace"
    PublisherInternational Committee on Composite Materials
    ISBN (Print)9784931136052
    Publication statusPublished - 2007

    Publication series

    NameICCM International Conferences on Composite Materials

    All Science Journal Classification (ASJC) codes

    • General Engineering
    • Ceramics and Composites


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