Pathways toward electric field induced alignment of block copolymers

Thomas Thurn-Albrecht, Jason DeRouchey, Thomas P. Russell, Rainer Kolb

Research output: Contribution to journalArticlepeer-review

147 Scopus citations

Abstract

Using in situ small-angle X-ray scattering, the electric field induced orientation in a block copolymer having a cylindrical microdomain morphology was investigated. Studies were performed with the copolymer in different initial states. Beginning with a disordered copolymer, composition fluctuations are oriented by the electric field. Following cooling across the disorder-to-order-transition, microdomains are oriented parallel to the applied field. Beginning with a microphase-separated copolymer where the microdomains are oriented normal to the field, the domain orientation becomes unstable at high field strengths, and the microdomains reorient in a piecewise manner.

Original languageEnglish
Pages (from-to)8106-8110
Number of pages5
JournalMacromolecules
Volume35
Issue number21
DOIs
StatePublished - Oct 8 2002

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Inorganic Chemistry
  • Materials Chemistry

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