Temperature-Activated Interfacial Friction Damping in Carbon Nanotube Polymer Composites

Jonghwan Suhr,*† Wei Zhang,† Pulickel M. Ajayan,‡ and Nikhil A. Koratkar*†
Department Mechanical, Aerospace and Nuclear Engineering and Department of Materials Science and Engineering, Rensselaer Polytechnic Institute, Troy, New York 12180
Nano Lett., 2006, 6 (2), pp 219–223
DOI: 10.1021/nl0521524
Publication Date (Web): January 25, 2006
Copyright © 2006 American Chemical Society
*

 To whom correspondence should be addressed. E-mail:  suhrjh@rpi.edu or koratn@rpi.edu. Phone:  518-276-2630. Fax:  518-276-2623.

,
†

 Department Mechanical, Aerospace and Nuclear Engineering.

,
‡

 Department of Materials Science and Engineering.

Abstract

Abstract Image

Effect of temperature on interfacial sliding in single-walled carbon nanotube polycarbonate composites is investigated experimentally. We show that interfacial slip at the tube−polymer interfaces can be activated at relatively low dynamic strain levels (0.35%) by raising temperature to 90 °C. We attribute this to increased mobility of the polymer chain backbones at elevated temperatures and thermal relaxation of the radial compressive stresses at the tube−polymer interfaces. These results show the potential of polymer nanocomposites as high-temperature damping materials for vibration and acoustic suppression in a variety of dynamic systems.

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History

  • Published In Issue February 08, 2006
  • Received November 1, 2005
    Revised Manuscript Received January 2, 2006

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