Formation of Ultra Narrow Lamellar Structures in POSS-containing Triblock Terpolymers

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  • Goseki Raita
    Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology
  • Ishizune Takashi
    Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology
  • Hirao Akira
    Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology
  • Hayakawa Teruaki
    Department of Organic and Polymeric Materials, Graduate School of Science and Engineering, Tokyo Institute of Technology

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An ultra narrow line structure was prepared in the lamellar morphology of polyhedral oligomeric silsesquioxane (POSS)-containing triblock terpolymer in the bulk via the self-assembly. The triblock terpolymers, which comprised polystyrene, POSS-containing poly(methacrylate) (PMAPOSS) and poly(methyl methacrylate), were synthesized by anionic polymerization. The self-assembled structures were studied by using a transmission electron microscopy (TEM) and a small-angle X-ray scattering (SAXS). It was found that a narrow PMAPOSS domain was layered in triple-domain lamellar, which caused by the effect of strongly segregation with the middle PMAPOSS block. The total d-spacing was 32 nm, and the smallest width of PMAPOSS domain layer was ca. 4 nm.

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