Unexpected intermediate state for the cylinder-to-gyroid transition in a block copolymer solution

Chia Ying Wang, Timothy P. Lodge

Research output: Contribution to journalArticle

31 Scopus citations

Abstract

The cylinder-to-gyroid transition in a concentrated solution of polystyrene-block-polyisoprene in dibutyl phthalate has been studied using rheology and small angle X-ray scattering. Following an appropriate temperature quench, the oriented cylinder phase transforms to the gyroid structure epitaxially. Remarkably, an intermediate state appears for a deep quench, whereas for a shallow quench the transition proceeds directly; the intermediate state exhibits scattering signatures consistent with a hexagonally perforated layer structure.

Original languageEnglish (US)
Pages (from-to)49-54
Number of pages6
JournalMacromolecular Rapid Communications
Volume23
Issue number1
DOIs
StatePublished - Jan 9 2002
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Keywords

  • Block copolymers
  • Order-order transition
  • Rheology
  • Scattering

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