| 초록 |
Although nacre (mother of pearl) is composed of mostly brittle aragonite (CaCO3) nanoplatelets and little amount of biopolymers, it shows superior mechanical properties because of its hierarchical brick-and-mortar structures from molecular to macro levels. In this research, we fabricated montmorillonite (MMT)-cellulose nanofiber (CNF) nanocomposites by a simple filtration process to mimic nacre structure for enhancing its mechanical performances. We compared the properties of MMT/CNF composites by varying MMT/CNF ratio, which was characterized by a scanning electron microscope (SEM), an X-ray diffraction (XRD), and a Fourier transform infrared spectroscopy (FT-IR). The opacity of the composites was decreased compared to pure MMT films, and self-extinguish property was also observed. Furthermore, relatively high toughness and strength were obtained by measuring in a tensile tester. These results suggest that our MMT-CNF composites have a potential replacement of commercial polymers. |
