Dynamic Mechanical and Dielectric Properties of the Ethylene Vinyl Acetate/Carbon Nanotube Composites

Abstract

A comparative study of the dielectric and mechanical properties of ethylene vinyl acetate copolymer (EVA) filled with various concentrations of pristine and modified carbon nanotubes is reported. The surface of the carbon nanotubes was modified with 4-(2-(cholesteryloxycarboxy)ethyl) phenyl to improve the interaction of the filler with the block copolymer matrix.

The improved interaction and the better dispersion of the modified carbon nanotubes (mMWCNTs) were demonstrated by a detailed study of the EVA molecular mobility through dynamic mechanical analysis and broadband dielectric relaxation spectroscopy.

Keywords

• Nanocomposites
• carbon nanotubes
• ethylene vinyl acetate
• mechanical properties
• dynamic mechanical analysis
• dielectric relaxation spectroscopy