Preparation method of polysaccharide fiber

Abstract

A preparation method of a polysaccharide fiber is provided. The method includes the following steps. First, a polysaccharide material is provided. Next, the polysaccharide material is mixed with an ionic liquid to form a polysaccharide solution. Then, the polysaccharide solution is mixed with a forming liquid to form a formed polysaccharide article. Next, a homogenization treatment is performed on the formed polysaccharide article to form a homogeneous polysaccharide article. Then, the homogeneous polysaccharide article is dried to form a polysaccharide fiber.

What is claimed is: 
     
         1 . A preparation method of a polysaccharide fiber, comprising:
 providing a polysaccharide material;   mixing the polysaccharide material with an ionic liquid to form a polysaccharide solution;   mixing the polysaccharide solution with a forming liquid to form a formed polysaccharide article;   performing a homogenization treatment on the formed polysaccharide article to form a homogeneous polysaccharide article; and   drying the homogeneous polysaccharide article to form the polysaccharide fiber.   
     
     
         2 . The method of  claim 1 , wherein the polysaccharide material and the ionic liquid are mixed under room temperature to form the polysaccharide solution. 
     
     
         3 . The method of  claim 1 , wherein the homogenization treatment is performed via a high-speed stirring homogenizer to form the homogeneous polysaccharide article, and after the homogeneous polysaccharide article is dried, the formed polysaccharide fiber has a non-woven pattern. 
     
     
         4 . The method of  claim 1 , wherein the homogenization treatment is performed via an emulsification homogenizer to form the homogeneous polysaccharide article, and after the homogeneous polysaccharide article is dried, the formed polysaccharide fiber has a thin film pattern. 
     
     
         5 . The method of  claim 1 , wherein the polysaccharide material comprises a cellulose-containing material, a chitin-containing material, or a starch-containing material. 
     
     
         6 . The method of  claim 5 , wherein the cellulose-containing material comprises wood pulp, bamboo, hemp, rice straw, coir, sugar cane, or a cotton product. 
     
     
         7 . The method of  claim 5 , wherein the chitin-containing material comprises shrimp shell, crab shell, insect carapace, or squid cartilage. 
     
     
         8 . The method of  claim 5 , wherein the starch-containing material comprises seed, tubers, or tuber of a plant. 
     
     
         9 . The method of  claim 1 , wherein the ionic liquid is composed of a cation and an anion, and the cation comprises a structure shown in formula (1): 
       
         
           
           
               
               
           
         
         wherein R 1  to R 5  are H or C 1  to C 8  hydrocarbon groups; 
         the anion is one selected from Cl − , Br − , CH 3 COO − , HCOO − , and PO 4   3− . 
       
     
     
         10 . The method of  claim 9 , wherein the ionic liquid comprises 1-ethyl-3-methylimidazolium acetate ([EMIM]OAc). 
     
     
         11 . The method of  claim 1 , wherein the forming liquid comprises a first solvent and a second solvent, the first solvent comprises water, methanol, ethanol, acetone, or a combination thereof, and the second solvent comprises the ionic solution, dimethyl sulfoxide (DMSO), dimethylacetamide (DMAc), or a combination thereof. 
     
     
         12 . The method of  claim 2 , wherein an average fiber diameter of the polysaccharide fiber having a non-woven pattern is 13 μm to 30 μm. 
     
     
         13 . The method of  claim 3 , wherein an average fiber diameter of the polysaccharide fiber having a thin film pattern is 0.080 μm to 0.200 μm. 
     
     
         14 . The method of  claim 1 , wherein the mixing of the polysaccharide material with the ionic liquid further comprises heating to 60° C. to 80° C. 
     
     
         15 . The method of  claim 1 , wherein the homogenization treatment is 3 minutes to 5 minutes. 
     
     
         16 . The method of  claim 1 , wherein the polysaccharide material further comprises a reactive dye, and after the polysaccharide solution is mixed with the forming liquid, the reactive dye and the polysaccharide material are separated to form the formed polysaccharide article without the reactive dye.