Patent ID: 9017469
Filing Date: 2015-04-28
Classification: C08L,D01D,D01F

Abstract:
1. A method for fabricating spinning solution for industrial production of pure chitosan fiber, characterized in that, the method comprises the steps of: step (a): screening a flake chitosan raw material having a deacetylation degree of at least 92% and a viscosity at least 1000 mpa·s and removing impurities; step (b): putting in a dissolving kettle the screened flake chitosan raw material with a weight which is 3%-8% of the total weight of the spinning solution, sealing the dissolving kettle, and evacuating into vacuum; step (c): adding 0.9%-6% acetic acid solution, and soaking at the room temperature for 40-60 minutes; step (d): uniformly stirring at a rate of 26-60 rpm for 7.5-19 hours under a pressure of ≦5000 pa in the dissolving kettle, standing for 1-3 hours, and obtaining a spinning solution.