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Phase separation of ultrathin polymer-blend films on patterned substrates

A. Karim, J. F. Douglas, B. P. Lee, S. C. Glotzer, J. A. Rogers, R. J. Jackman, E. J. Amis, and G. M. Whitesides
Phys. Rev. E 57, R6273(R) – Published 1 June 1998
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Abstract

The phase separation of ultrathin polymer-blend films of polystyrene and polybutadiene on microcontact printed alkanethiol patterns with hydrophobic and hydrophilic end groups (CH3 and -COOH) is investigated by atomic force microscopy. Simulations suggest that the phase-separation morphology can be controlled through patterns that modulate the polymer-surface interaction, and this concept is verified experimentally. Length scale pattern control is found to be limited to a scale on the order of a few micrometers.

  • Received 6 February 1998

DOI:https://doi.org/10.1103/PhysRevE.57.R6273

©1998 American Physical Society

Authors & Affiliations

A. Karim1, J. F. Douglas1,2, B. P. Lee1,2, S. C. Glotzer1,2, J. A. Rogers2, R. J. Jackman3, E. J. Amis1, and G. M. Whitesides3

  • 1Polymers Division, NIST, Gaithersburg, Maryland 20899
  • 2Center for Theoretical and Computational Materials Science NIST, Gaithersburg, Maryland 20899
  • 3Department of Chemistry and Department of Chemical Biology, Harvard University, Cambridge, Massachusetts 02138

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Vol. 57, Iss. 6 — June 1998

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