| 초록 |
Composite films based on cellulose matrix are of large interest to diverse fields. We report new class of such film based on Microfibrillated Cellulose (MFC). MFC is a material composed of micron-length cellulose fibrils with a high aspect ratio. It is biodegradeable material, and has very large specific surface area, high tensile strength and elasticity. By incorporating inorganic particles in the films, we could obtain bio-nanocomposite films with stiff, smooth and hydrophobic surface. Micron sized, cubic shape particles from carbonate were successfully incorporated into MFC. Homogeneous and dense composite films are obtained via room temperature drying. The film formation is strongly promoted by the cellulose fiber network through interfibrillar hydrogen bonding. We found that MFC provides critical integrity by linking the particles in a network. The morphology and thickness of the films can be effectively controlled by the amount of carbonate. |
