| 초록 |
Varying the concentration of GO in the presence of octyltriethoxysilane (OTES) Graphene oxide/polypropylene (GO/PP) nanocomposites were fabricated using an internal batch mixer to improve the antiscratch ability of pure PP. Mechanical properties of the prepared GO/PP nanocomposites such as hardness, elastic modulus, were analyzed by nanoindentation. As a compatibilizer, OTES increased dispersibility, interfacial interactions, and mechanical interlocking between the GO nanofiller and the PP matrix, improving mechanical strength. By addition of only 1 wt% of GO and OTES, 286 %,127 %, and 117% improvement of hardness, elastic modulus andenhancement on fracture toughness are achieved. Moreover, scratch hardness, elastic recovery, and tangential forces acting on the scratch probe were investigated to present insight into scratch behavior. |
