Importance

Loading Importance Indicators...

Abstract

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 6 wt %-12 wt % sodium hydroxide and 0.1 wt %-6 wt % 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 −10˜-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 3 wt %-12 wt %. 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.

Loading the Abstract Image...

First Claim