Microstructure of block copolymer reinforced interfaces observed with frictional force microscopy

Authors

  • Dr. Klaus D. Jandt,

    1. Department of Materials Science and Engineering and the Materials Science Center (MSC) Cornell University, Ithaca, NY 14853-1501 (USA)
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  • Dr. Chi-An Dai,

    1. Department of Materials Science and Engineering and the Materials Science Center (MSC) Cornell University, Ithaca, NY 14853-1501 (USA)
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  • Prof. Edward J. Krämer

    Corresponding author
    1. Department of Materials Science and Engineering and the Materials Science Center (MSC) Cornell University, Ithaca, NY 14853-1501 (USA)
    • Department of Materials Science and Engineering and the Materials Science Center (MSC) Cornell University, Ithaca, NY 14853-1501 (USA)
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  • We Gratefully Acknowledge the Primary financial Support of the Cornell Material Science Center (Msc), which is funded by the National Science Foundation and benefited from the use of Msc Central Facilities. K. D. Jandt is grateful for Partial Financial Support in the form of a Feodor-Lynen Fellowship from the Alexander von Humboldt Foundation, Bonn, Germany. We wish to thank C. Daugherty from the electron microscopy facility of the College of Agriculture & Life Sciences and Division of Biological Sciences and J. Hunt and I. Karr for their assistance.

Abstract

The microstructure of block copolymer-reinforced interfaces of homopolymers has been studied by frictional force microscopy (FFM). The FFM micrograph in the Figure shows details, e.g., lamellar branching, of a poly(styrene)/poly(2-vinylpyridine) (PS/PVP) homopolymer interface reinforced with a PVP–PS–PVP triblock copolymer. An explanation for the need to “develop” the FFM image is proposed and the advantages of FFM over TEM are discussed.

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