Preparation method of fiber

Abstract

A preparation method of a fiber is provided. In the preparation method of the fiber, a polymer is dissolved in a mixing solution of an ionic liquid and a salt to form a spinning viscose, wherein the salt includes KCl, KBr, KOAc, NaBr, ZnCl2 or a combination thereof. Afterwards, the spinning viscose is used as a material to perform a spinning process so as to form a fiber.

What is claimed is: 
     
         1 . A preparation method of a fiber, comprising:
 dissolving a polymer in a mixing solution including an ionic liquid and a salt to form a spinning viscose, wherein the polymer comprises cellulose or poly-metaphenylene isophthalamide, the salt includes KCl, KBr, KOAc, NaBr, ZnCl 2  or a combination thereof, and a weight ratio of the salt and the ionic liquid is 10:90 to 0.1:99.9; and   performing a spinning process using the spinning viscose as a material to form a fiber.   
     
     
         2 . The method of  claim 1 , wherein the ionic liquid is composed of a cation and an anion, and the cation is alkyl imidazole type and the cation includes a structure of Formula 1: 
       
         
           
           
               
               
           
         
         wherein R 1  and R 2  are respectively a alkyl group having 1 to 4 carbon atoms; 
         the anion is Cl − , Br or CH 3 COO − . 
       
     
     
         3 . The method of  claim 1 , wherein the ionic liquid comprises 1-ethyl-3-methylimidazolium acetate. 
     
     
         4 . The method of  claim 1 , wherein the polymer is 5 wt % to 20 wt % by weight based on a total weight of the spinning viscose. 
     
     
         5 . The method of  claim 1 , wherein the polymer is dissolved in the mixing solution at a temperature of 60° C. to 80° C. 
     
     
         6 . The method of  claim 1 , wherein the spinning process is a wet spinning method or a dry-jet wet spinning method.