MANUFACTURING METHOD OF REGENERATED CELLULOSE FIBER USING RICE-STRAW

摘要

PURPOSE: A manufacturing method of a regenerated cellulose fiber using rice-straw is provided, which is characterized by preventing environmental pollution, manufacturing the fiber economically and enhancing usability and value added. CONSTITUTION: The regenerated cellulose fiber is obtained by a process containing the steps of: grinding the rice-straw to make it particle; cooking the particle in dilute acid for 50-80minutes, followed by dewatering and washing; cooking with sodium hydroxide and sodium sulfide for 90-120minutes, followed by dewatering and washing; extracting pulp ingredient; manufacturing melting pulp which is bleached and increased a-cellulose content with a bleaching agent and sodium hydroxide; and then dissolving the melting pulp with N-methyl mopolyn N-oxide/H2O solvent system, followed by spinning.