Confined Block Copolymer Thin Films

Nagraj Koneripalli, Navjot Singh, Rastislav Levicky, Frank S. Bates, Patrick D. Gallagher, Sushil K. Satija

Research output: Contribution to journalArticle

Abstract

Thin films of nearly symmetric diblock copolymers of poly(ethylenepropylene)-poly-(ethylethylene) (PEP-PEE) were investigated in confinement between two hard walls. The domain thickness was found to be a function of the film thickness. Mechanically stable films with an integral number of domains were found with the ordering parallel to the hard walls at all degrees of frustration. The PEE block was found to preferentially segregate to both the confining surfaces. A discontinuous first-order-like transition occurred in the number of domains. These results provide a new approach toward probing the influence of chain stretching (or dilation) on the stability of block copolymer structures.

Original languageEnglish (US)
Pages (from-to)2897-2904
Number of pages8
JournalMacromolecules
Volume28
Issue number8
DOIs
StatePublished - Apr 1 1995

ASJC Scopus subject areas

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

Fingerprint Dive into the research topics of 'Confined Block Copolymer Thin Films'. Together they form a unique fingerprint.

  • Cite this

    Koneripalli, N., Singh, N., Levicky, R., Bates, F. S., Gallagher, P. D., & Satija, S. K. (1995). Confined Block Copolymer Thin Films. Macromolecules, 28(8), 2897-2904. https://doi.org/10.1021/ma00112a041