Volume 25, Issue 7 pp. 788-792
Communication

Optical Probes for Monitoring Intercalation and Exfoliation in Melt-Processed Polymer Nanocomposites

Paul H. Maupin

Corresponding Author

Paul H. Maupin

Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy, Washington, DC, USA 20585

Guest researcher at the National Institute of Standards and Technology and the Naval Research Laboratory.

Disclaimer: This work was carried out by the National Institute of Standards and Technology (NIST), an agency of the U. S. government, and by statute is not subject to copyright in the United States. The identification of any commercial product or trade name does not imply endorsement or recommendation by the National Institute of Standards and Technology.

Office of Basic Energy Sciences, Office of Science, U.S. Department of Energy, Washington, DC, USA 20585. Fax: (+1) 301 903 4110Search for more papers by this author
Jeffrey W. Gilman

Jeffrey W. Gilman

Building and Fire Research Laboratory, National Institute of Standards and Technology, Gaithersburg MD, 20899, USA

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Richard H. Harris Jr.

Richard H. Harris Jr.

Building and Fire Research Laboratory, National Institute of Standards and Technology, Gaithersburg MD, 20899, USA

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Severine Bellayer

Severine Bellayer

Building and Fire Research Laboratory, National Institute of Standards and Technology, Gaithersburg MD, 20899, USA

Guest researcher at the laboratory GEMTEX of Ecole Nationale des Arts et Industries Textiles (ENSAIT), Roubaix, France.

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Anthony J. Bur

Anthony J. Bur

Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg MD, 20899, USA

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Steven C. Roth

Steven C. Roth

Materials Science and Engineering Division, National Institute of Standards and Technology, Gaithersburg MD, 20899, USA

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Marius Murariu

Marius Murariu

Materia Nova-Service des Materiaux Polymeres et Composites, Universite de Mons, B 7000, Mons, Belgium

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Alexander B. Morgan

Alexander B. Morgan

Dow Chemical Company, Midland, MI, USA

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Joseph D. Harris

Joseph D. Harris

Dow Chemical Company, Midland, MI, USA

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First published: 23 March 2004
Citations: 30

Abstract

Summary: Laser-induced fluorescence spectroscopy of the optical probe Nile Blue A in polymer clay nanocomposites is described. Concentration quenching of the fluorescence dominates the probe behavior until the clay platelets are physically separated by polymer intercalation. Further separation into an exfoliated structure results in an intense increase in probe fluorescence. Preliminary results indicate the ability to discriminate between intercalated and exfoliated structures in nanocomposites formed by melt processing.

image

Polyamide 6 nanocomposites: Purple, 1 minute processing (left). Red, 7 minute processing (right).

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