Constrained dewetting of polymers grafted onto a nonadsorbing surface in poor solvents: From pancake micelles to the holey layer

June Huh, Cheol Hee Ahn, Won Ho Jo, Joanne N. Bright, David R.M. Williams

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

Using both theory and computer simulation, we study the dewetting problem of a polymer layer grafted on a surface in a poor solvent. We find that in the regime of moderate grafting density the layer is unstable to the formation of finite-sized holes. The formation of these holes is a result of the tradeoff between minimal layer surface energy and minimal tether penalty, thus giving an example of dewetting constrained by polymer stretching. We also examine the low-density case and find a new micellar regime where the nuclei of surface micelles are strongly flattened, forming "pancake micelles". The theoretical prediction qualitatively agrees with Monte Carlo simulations.

Original languageEnglish
Pages (from-to)2974-2980
Number of pages7
JournalMacromolecules
Volume38
Issue number7
DOIs
Publication statusPublished - 2005 Apr 5
Externally publishedYes

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Micelles
Polymers
Interfacial energy
Stretching
Computer simulation
Monte Carlo simulation

ASJC Scopus subject areas

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

Cite this

Constrained dewetting of polymers grafted onto a nonadsorbing surface in poor solvents : From pancake micelles to the holey layer. / Huh, June; Ahn, Cheol Hee; Jo, Won Ho; Bright, Joanne N.; Williams, David R.M.

In: Macromolecules, Vol. 38, No. 7, 05.04.2005, p. 2974-2980.

Research output: Contribution to journalArticle

Huh, June ; Ahn, Cheol Hee ; Jo, Won Ho ; Bright, Joanne N. ; Williams, David R.M. / Constrained dewetting of polymers grafted onto a nonadsorbing surface in poor solvents : From pancake micelles to the holey layer. In: Macromolecules. 2005 ; Vol. 38, No. 7. pp. 2974-2980.
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