| 초록 |
Herein, We report on the preparation of cellulose nanofibers (CNF) via modification of cellulose with succinic anhydride (SA) and aqueous counter collision (ACC) method. Generally, top-down mechanical disintegration of CNF can be facilitated by chemical treatment such as TEMPO. However, it has been repored that the TEMPO may cause depolymerization of the nanofibers resulting in poor mechanical properties. Recently, carboxylation of CNF using SA is introduced as alternative to the TEMPO, which leads to an effective nanofibrillation of CNF. In this presentation, we report on the successful nanofibrillation of CNF with aid of ACC method combined with SA treatment (SA-CNF). In our attempt, uniform aqueous dispersion of SA-CNF of ~100 nm diameter can be prepared. We investigate the morphology and crystalline structure. Our results show that the ACC processing of CNF combined with SA treatment can there was no change in the crystal structure while allowing effective nanofibrillation of CNF. |
