Multipod structures of lamellae-forming diblock copolymers in three-dimensional confinement spaces: Experimental observation and computer simulation

Takeshi Higuchi, Marco Pinna, Andrei V. Zvelindovsky, Hiroshi Jinnai, Hiroshi Yabu

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The three-dimensional (3D) confinement effect on the microphase-separated structure of a diblock copolymer was investigated both experimentally and computationally. Block copolymer nanoparticles were prepared by adding a poor solvent into a block copolymer solution and subsequently evaporating the good solvent. The 3D structures of the nanoparticles were quantitatively determined with transmission electron microtomography (TEMT). TEMT observations revealed that various complex structures, including tennis-ball, mushroom-like, and multipod structures, were formed in the 3D confinement. Detailed structural analysis, showed that one block of the diblock copolymer slightly prefers to segregate into the particle surface compared with the other block. The observed structures were further elaborated using cell dynamics computer simulation.

Original languageEnglish
Pages (from-to)1702-1709
Number of pages8
JournalJournal of Polymer Science, Part B: Polymer Physics
Volume54
Issue number17
DOIs
Publication statusPublished - 2016 Sep 1

Keywords

  • 3D confinement
  • block copolymers
  • cell dynamic simulation
  • electron microscopy
  • electron tomography
  • microphase-separated structure
  • phase separation
  • simulations

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Polymers and Plastics
  • Materials Chemistry

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