NEW REGENERATED CELLULOSE FIBER AND PROCESS OF PREPARING THE SAME

摘要

The process of preparing the regenerated cellulose fiber according to the present invention comprises providing Na-cellulose by treating natural cellulose with an NaOH aqueous solution, aging the Na-cellulose by exposing to air, removing an excess of NaOH from the aged cellulose by repeating washing and filtration, preparing a reacted cellulose by reacting the aged cellulose with carbon dioxide in a pretreating solution in a high pressure reactor, preparing a cellulose carbonate derivative from the reacted cellulose by repeating washing and filtration, preparing a spinning solution by dissolving the cellulose carbonate derivative in a mixed solvent of NaOH and ZnO aqueous solution, and wet-spinning the cellulose spinning solution in a bath. The process of preparing a regenerated cellulose fiber in accordance with the present invention prepares a cellulose carbonate derivative using carbon dioxide instead of a cellulose xanthate derivative through reaction of Na-cellulose with carbon disulfide in the viscose process, therefore not harmful to human body. Also, this process may use all the equipments and apparatus of the conventional viscose process.