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Journal of Chemical Physics / Volume 135 / Issue 24 / ARTICLES / Polymers and Complex Systems

J. Chem. Phys. 135, 244902 (2011); http://dx.doi.org/10.1063/1.3672104 (5 pages)

Free energy of alternating two-component polymer brushes on cylindrical templates

William L. Miller, Behnaz Bozorgui, Katherine Klymko, and Angelo Cacciuto

Department of Chemistry, Columbia University, 3000 Broadway, New York, New York 10027, USA

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(Received 17 October 2011; accepted 4 December 2011; published online 27 December 2011)

We use computer simulations to investigate the stability of a two-component polymer brush de-mixing on a curved template into phases of different morphological properties. It has been previously shown via molecular dynamics simulations that immiscible chains having different length and anchored to a cylindrical template will phase separate into stripes of different widths oriented perpendicularly to the cylindrical axis. We calculate free energy differences for a variety of stripe widths, and extract simple relationships between the sizes of the two polymers, N1 and N2, and the free energy dependence on the stripe width. We explain these relationships using simple physical arguments based upon previous theoretical work on the free energy of polymer brushes.

© 2011 American Institute of Physics

Article Outline

  1. INTRODUCTION
  2. METHODS
  3. RESULTS
  4. CONCLUSIONS

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KEYWORDS and PACS

Keywords

free energy, mixing, phase separation, polymer blends, surface morphology

PACS

  • 65.60.+a

    Thermal properties of amorphous solids and glasses: heat capacity, thermal expansion, etc.

  • 68.35.bm

    Polymers, organics

  • 64.75.Ef

    Mixing

  • 61.41.+e

    Polymers, elastomers, and plastics

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3672104

PUBLICATION DATA

ISSN

0021-9606 (print)  
1089-7690 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    C. Singh, P. K. Ghorai, M. A. Horsch, A. M. Jackson, R. G. Larson, F. Stellacci, and S. C. Glotzer, Phys. Rev. Lett. 99, 226106 (2007).

    R. C. Van Lehn and A. Alexander-Katz, J. Chem. Phys. 135, 141106 (2011)JCPSA6000135000014141106000001.

    A. Santos, C. Singh, and S. C. Glotzer, Phys. Rev. E 81, 011113 (2010).


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