3-Dimensional observation of the styrene-butadiene star block copolymers

Taishi Hashimoto, Hiroshi Jinnai, Yukihiro Nishikawa, Shigeru Suzuki, Masaoki Takahashi, Toshio Nishi

Research output: Contribution to conferencePaperpeer-review


In this study, microphase separated structures of a series of block copolymers, which were made of multiple poly(styrene-block-butadiene) (SB) linked at each PB end, were studied by transmission electron microtomography. Depending on the number of SB block copolymer, we obtained star block copolymers with 1 to 4 arms. The 1-armed block copolymer, that is diblock copolymer, exhibited cylindrical morphology. With increasing the number of arms, the morphology changed from cylinder to a mixture of cylinder and network structure. In the 4-armed star SB block copolymer, a large portion of the morphology turned out to be the network morphology.

Original languageEnglish
Number of pages1
Publication statusPublished - 2005
Event54th SPSJ Annual Meeting 2005 - Yokohama, Japan
Duration: 2005 May 252005 May 27


Conference54th SPSJ Annual Meeting 2005


  • Cylindrical morphology
  • Star block copolymer
  • Transmission Electron Microtomography


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