In situ Molecular Aggregation Structure Analyses on Glassy Polymers during Mechanical Deformation

ORAL

Abstract

Poly (methyl methacrylate) (PMMA) and polycarbonate (PC) were chosen as a glassy polymer. Molecular aggregation structure and stretching properties of these glassy films were investigated by polarized high-speed camera observation and synchrotron X-ray wide-angle and small-angle scattering techniques during uniaxial and bulge deformation processes.
Mn of PC was 30k. Mn of PMMAs were 70k and 1.2M. During both uniaxial and bulge deformation processes, PMMA-70k showed brittle nature, and PC and PMMA-1.2 M showed ductile property. In situ wide-angle X-ray scattering measurement revealed that increase in interchain distance during bulge deformation. Also, polarized high-speed camera observation revealed that PMMA-1.2M showed a wrinkle structure. This structure must be related to emergence of ductile property of PMMA-1.2M.

*This work was supported by the Impulsing Paradigm Change through Disruptive Technology (ImPACT) Program from the Ministry of Education, Culture, Sports, Science and Technology, Japan.

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Presenters

  • Ken Kojio

    • Kyushu Univ

Authors

  • Ken Kojio

    • Kyushu Univ

  • Aya Fujimoto

    • Kyushu Univ

  • Tomoko Kajiwara

    • Kyushu Univ

  • Chao-Hung Cheng

    • Graduate School of Engineering, Kyushu University
    • Kyushu Univ

  • Shiori Masuda

    • Kyushu Univ

  • Nattanee Dechnarong

    • Graduate School of Engineering, Kyushu University
    • Kyushu Univ

  • Kento Fukada

    • Kyushu Univ

  • Kazutaka Kamitani

    • Institute for Materials Chemistry and Engineering, Kyushu University
    • Kyushu Univ

  • Atsushi Takahara

    • Kyushu Univ