| 초록 |
Cellulose nanofiber(CNF), which can be obtained from nature, are attracting attention as a next-generation advanced material. However, during the drying process, irreversible agglomeration of CNF fibers occur, resulting in the collapse of the nanostructure. Due to drying problems, CNF have been stored and transported in aqueous solution, increasing cost and hindering utilization efficiency. In this study, using alkali lignin(AL) as a natural additive, 'AL/CNF drying system' was developed to overcome the limitations of CNF’s drying process. AL prevents self-aggregation of CNF by forming hydrogen bonds with CNF during dehydration. The morphological properties of dried AL/CNF were analyzed through FE-SEM. As a result, AL/CNF could be able to maintain their nanofibrous structure well even after the oven drying. In addition, the added AL could be removed by a simple washing process, and AL removed CNF exhibited typical nanofibrillar morphology and properties to those of never-dried CNF. |
