Effect of Surface Treatment on Mechanical Properties of Polymer Matrix CNT Composites

Abstract

We fabricated polymer matrix composites which were dispersed Carbon nanofibers(CNFs) and Carbon nanotubes(CNTs) by kneading and measured their mechanical property. In polypropylene(PP) matrix composites, its Young′s modulus is approximately 1.9 fold higher than that of the pure PP when CNF concentration was 16 vol%. Subsequently, we found that comparison of experimental result and theoretical fomula show that increasing of interface adhesive force is good for increasing of mechanical property. And we examined effects that variation of state of interface by treatment of filler surface give mechanical property, specially tensile strength. As a result, we found that tensile strength of composites increases greatly by aminofunctionalization of filler surface.