Pancake-to-brush transition in block copolymers

I. Szleifer*

*Corresponding author for this work

Research output: Contribution to journalArticle

19 Scopus citations

Abstract

A first-order phase transition between an adsorbed (two-dimensional) polymer layer at low surface coverage and a stretched (brush-like) configuration at intermediate surface coverage is predicted using single-chain mean-field theory in grafted block copolymer layers. The phase transition is the result of the interplay between an attractive interaction of the tethered block monomers find the surface and a surface-coverage - dependent repulsion with the surface induced by the presence of the grafting block. This repulsion is in addition to the steric repulsion between the monomers of the tethered block. The critical point of the phase transition is found as a function of the strength of the polymer-surface attraction, tethered polymer-grafting block repulsion and tethered-block molecular weight. The findings of the theory are in agreement with different experimental findings both at solid-liquid and liquid-liquid interfaces.

Original languageEnglish (US)
Pages (from-to)721-727
Number of pages7
JournalEurophysics Letters
Volume44
Issue number6
DOIs
StatePublished - Dec 15 1998

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Fingerprint Dive into the research topics of 'Pancake-to-brush transition in block copolymers'. Together they form a unique fingerprint.

  • Cite this