| 초록 |
In order to preserve water resources, research on natural polymer-based water treatment material is being actively conducted. Among them, cellulose nanofiber, which is 20-30 nm in diameter with a long aspect ratio, has advantages such as large surface area and excellent mechanical properties. However, it is difficult to separate nanocellulose from contaminated water because it exists in a water-dispersed state without additional polymer processing. Therefore, this study aimed to manufacture regenerated cellulose hydrogel (RC) with nano-fibrillar morphology. PEI modification was then performed (PEI/RC) to improve Cr(VI) removal capacity. In FE-SEM images, RC had a unique nanofibrous structure, and it was well maintained even after modification. As a result, PEI/RC showed excellent Cr(VI) removal capacity of 578 mg/g by introducing abundant amine groups on the surface. This eco-friendly regenerated nanocellulose hydrogel will be applicable to various environmental restoration processes. |
