| 초록 |
Cellulose is one of nature's most abundant materials on earth and referred to as "Biomass." It is a renewable carbon resource as well as an alternative material to replace petroleum-based plastics, and derived from two primary sources like cotton linters and wood pulp. However, neat cellulose has not good reactivity because of strong hydrogen bond. In this study, to make better reactivity of cellulose, cellulose was pretreated such as sonication and water activation, etcetera. Neat cellulose was dissolved in lithium chloride/N,N-dimethylacetamide(LiCl/DMAc) system. Fatty acid and acetic anhydride was used to prepare cellulose mixed ester. Reaction was run in 8h at 120℃. Sonicated cellulose was studied using Fourier transform infrared(FT-IR), Field emission scanning electron microscopy(FE-SEM) and thermogravimetric analysis(TGA). The results showed structure, morphology and thermal stability of sonicated cellulose respectively. |
