| 초록 |
Carbon nanotubes (CNTs) are being used as reinforcement in a wide variety of polymers. Bacterial cellulose, produced by Acetobacter xylinum, is known as the new industrial materials, because of its unique structure and properties in terms of its purity, high crystallinity and mechanical stability. However it is difficult to process in solution or as a melt, because of its large proportion of intra- and inter-molecular hydrogen bonds. In this study, we introduced CNTs to cellulose fibers in order to enhance the mechanical properties of them in the solution states. The composite fiber was prepared by wet-spinning of the regenerated bacterial cellulose dissolved in a solvent system, dimthylacetamide/lithium chloride (DMAc/LiCl), blended with CNTs into a coagulation bath, 10 wt.-% H2SO4, 12 wt.-% NH4Cl. The morphology of the composite fibers was observed by scanning electron microscopy and the mechanical properties of the composites were characterized by dynamic mechanical analysis. |
