| 초록 |
Over the last decade, there has been considerable interest in the development of biopolymers for replacing synthetic plastics. However, biopolymers developed from renewable resources still need improved performance and lower cost. To address this issue, the use of nano-sized reinforcement has been suggested. Rod-like cellulose nano-fibers (CNs) have attracted considerable attention due to their high specific strength and modulus, low density, chemical tunability, renewable nature and relatively low cost. However, the industrial use of CNs is limited because of their low thermal stability caused by sulfate groups introduced during the acid hydrolysis. In this study, CNs with high thermal stability were prepared using a simple ultra-sound treatment and characterized by transmission electron microscopy, X-ray diffraction and thermo-gravimetric analysis. The prepared nano-fibers were investigated for their application as reinforcement nanofillers in polymer composites. |
