Morphological Study of ABC Triblock Terpolymers

POSTER

Abstract

Triblock terpolymers form richer variety of microdomain structures than diblock copolymers. In this study We investigated the microdomain structures in the toluene-cast films of several kinds of ABC triblock terpolymers consisting of polystyrene, polyisoprene and poly(dimethyl siloxane) (PS-b-PI-b-PDMS) by transmission electron microscopy (TEM). As the result we observed various structures composed of lamellae, cylinders and spheres. In addition, we employed electron tomography to analyze the two complex network-forming structures using their three-dimensional images. Consequently, we found that one of them forms core-shell type double gyroid structure in PS matrix, and the other forms core-shell type single gyroid-like structure in PS matrix.

Authors

  • Satoshi Akasaka

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

  • Akiko Mitani

    • Department of Polymer Chemistry, Kyoto University

  • Hirokazu Hasegawa

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

  • Nikos Hadjichristidis

    • Department of Chemistry, University of Athens