Order-order transition among lamellae, \textit{Fddd}, and gyroid in diblock copolymer melts

ORAL

Abstract

We firstly found a Disorder-Gyroid-\textit{Fddd}-Lamellae transition behavior found poly(styrene-$b$-isoprene) (S-I) diblock copolymer melts in previous study. In this study, we will present the dynamics of order-order transition (OOT) among lamellae, \textit{Fddd}, and gyroid. we investigated the dynamics of OOT by using time-resolved small angle X-ray scattering with Synchrotron radiation X-ray source. We found that \textit{Fddd} structure was formed as a metastable structure during the OOT from lamellae to gyroid induced by temperature jump.

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Authors

  • Mikihito Takenaka

    Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto University

  • Myung Im Kim

    Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto University

  • Tsutomu Wakada

    Kyoto University

  • Satoshi Akasaka

    Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto University

  • Shotaro Nishitsuji

    Kyoto University

  • Kenji Saijo

    Kyoto University

  • Hirokazu Hasegawa

    Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Kyoto University

  • Kazuki Ito

    Riken