| 摘要 |
A method of dissolving cellulose, comprising: firstly heating and activating the cellulose by using a heating apparatus, and then dissolving by using a solvent. The temperature of the heating and the activating is 130°C-270°C, the time period of the heating is 0.1-100 hours, and the solvent is an aqueous solution including 6wt%-12wt%sodium hydroxide and 0.1wt%-6wt % zinc oxide. The method of dissolving comprises: heating and activating the cellulose with a degree of polymerization of DP= 300-700, dispersing the cellulose into the solvent, and freezing under a temperature of -10ˆ¼-30°C for 0.1-50 hours; then unfreezing under a condition of no more than 32°C, and standing or stirring by machine during the process of unfreezing so as to dissolve and obtain a cellulose solution with a concentration of 3wt%-12wt%. The obtained cellulose solution has a good solubility and stability that maintains a relatively good stability after being stood under a temperature of -8 to 32°C for a few days. The cellulose solution can be used in the preparation of fibers, films or sponges, and is suitable for industrial production. |
