Title of Oral/Poster Presentation

Thermal Effect of CNT Functionalization in PDMS/CNT Thin Film Composite

Presenter Information

Matthew RalphsFollow

Class

Article

Department

Mechanical and Aerospace Engineering

Faculty Mentor

Nick Roberts

Presentation Type

Poster Presentation

Abstract

Carbon nanotubes (CNTs) exhibit extraordinary mechanical and thermal properties and as such have become the subject of large research interest. One such area of interest is in using CNTs to enhance the mechanical or thermal properties of other materials by creating a composite material. However, recent research has shown that the functionalization process that the CNTs undergo prior to being added to other materials may have an impact on the overall mechanical and thermal properties of the composite material. This particular study looks at the effect that CNT functionalization has on the thermal conductivity of a polydimethylsiloxane (PDMS) thin film with embedded, randomly oriented, multi-walled carbon nanotubes (MWCNTs). Three different groups of functionalized MWCNTs were examined in this study: unfunctionalized, functionlized with -OH, and functionalized with -COOH. The fabrication process is presented along with results from multiple characterization techniques including the measurement of the effective composite thermal conductivity with comparisons to current thermal conductivity models for composite materials.

Start Date

4-9-2015 3:00 PM

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Apr 9th, 3:00 PM

Thermal Effect of CNT Functionalization in PDMS/CNT Thin Film Composite

Carbon nanotubes (CNTs) exhibit extraordinary mechanical and thermal properties and as such have become the subject of large research interest. One such area of interest is in using CNTs to enhance the mechanical or thermal properties of other materials by creating a composite material. However, recent research has shown that the functionalization process that the CNTs undergo prior to being added to other materials may have an impact on the overall mechanical and thermal properties of the composite material. This particular study looks at the effect that CNT functionalization has on the thermal conductivity of a polydimethylsiloxane (PDMS) thin film with embedded, randomly oriented, multi-walled carbon nanotubes (MWCNTs). Three different groups of functionalized MWCNTs were examined in this study: unfunctionalized, functionlized with -OH, and functionalized with -COOH. The fabrication process is presented along with results from multiple characterization techniques including the measurement of the effective composite thermal conductivity with comparisons to current thermal conductivity models for composite materials.