Structural rheology of microphase separated diblock copolymers

Ryota Tamate, Kohtaro Yamada, Jorge Viñals, Takao Ohta

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


We formulate a viscoelastic theory for interconnected microphase separated structures such as a double gyroid in diblock copolymer melts. We consider the energy increase and the energy dissipation due to the deformation of interconnected periodic domains. The dominant elastic part agrees with previous analytical results obtained by a phase formulation of deformations. It is shown that a viscous response also appears which is mainly due to two relaxation modes of the gyroid.

Original languageEnglish (US)
Article number034802
JournalJournal of the Physical Society of Japan
Issue number3
StatePublished - Mar 2008


  • Diblock copolymer
  • Double gyroid
  • Mode expansion
  • Rheology


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