Layering Phase Separation of Densely Grafted Diblock Copolymers

Gregory Brown, Amitabha Chakrabarti*, John F. Marko

*Corresponding author for this work

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

Phase separation of symmetric diblock copolymers end-grafted to a wall is studied using a Monte Carlo simulation. The nearest-neighbor repulsion between the two types of monomers is quenched from χ = 0 to χ =. 1 for chains of length N = 100 at near-melt densities. We present evidence that the two monomer species vertically segregate to form a three-layer structure that is uniform in the grafting plane. This is qualitatively different from a binary mixture of grafted homopolymers, which laterally segregates to form a structure with concentration modulated in the grafting plane at a scale of the side-to-side fluctuation distance.

Original languageEnglish (US)
Pages (from-to)7817-7821
Number of pages5
JournalMacromolecules
Volume28
Issue number23
DOIs
StatePublished - Nov 1 1995

ASJC Scopus subject areas

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

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