Method for preparing hydrophobic fibers by electrospinning of polymer

Abstract

A method for preparing hydrophobic fibers by electrospinning of polymer is provided, which may include the following steps: providing a polymer material including poly(methyl methacrylate); providing a solvent including 2-propanol and water; adding the polymer material into the solvent to form a mixed solution; heating and stirring the mixed solution; electrospinning the mixed solution to generate polymer fibers.

What is claimed is: 
     
         1 . A method for preparing hydrophobic polymer fibers by electrospinning of polymer, comprising:
 providing a polymer material including a poly(methyl methacrylate);   providing a solvent including a 2-propanol and a water, wherein a concentration of the water in the solvent is 10-40 wt %;   adding the polymer material into the solvent to form a mixed solution, wherein a concentration of the polymer material in the mixed solution is 0.8-1.8 wt %;   heating and stirring the mixed solution; and   electrospinning the mixed solution to generate polymer fibers.   
     
     
         2 . The method of  claim 1 , wherein the polymer fibers are polymer sub-micro fibers or polymer nano fibers. 
     
     
         3 . The method of  claim 1 , wherein an average molecular weight of the poly(methyl methacrylate) is 200,000-800,000. 
     
     
         4 . The method of  claim 1 , wherein a temperature of electrospinning the mixed solution is 20-75° C. 
     
     
         5 . The method of  claim 1 , wherein a flow rate of electrospinning the mixed solution is 0.01-0.5 mL/min. 
     
     
         6 . The method of  claim 1 , wherein a voltage of electrospinning the mixed solution is 3.0-30 kV. 
     
     
         7 . The method of  claim 1 , wherein an internal diameter of a needle head for electrospinning the mixed solution is 0.26-1.0 mm. 
     
     
         8 . The method of  claim 1 , wherein a distance between a tip of a needle head and a collector is 8-20 cm during electrospinning the mixed solution. 
     
     
         9 . A method for preparing hydrophobic polymer fibers by electrospinning of polymer, comprising:
 providing a polymer material including a poly(methyl methacrylate) and a poly(vinyl acetate);   providing a solvent including a 2-propanol and a water, wherein a concentration of the water in the solvent is 10-40 wt %;   adding the polymer material into the solvent to form a mixed solution, wherein a concentration of the polymer material in the mixed solution is 0.8-15 wt %;   heating and stirring the mixed solution; and   electrospinning the mixed solution to generate polymer fibers.   
     
     
         10 . The method of  claim 9 , wherein the polymer fibers are polymer sub-micro fibers or polymer nano fibers. 
     
     
         11 . The method of  claim 9 , wherein an average molecular weight of the poly(methyl methacrylate) is 200,000-800,000, an average molecular weight of the poly(vinyl acetate) is 40,000-300,000, and a percentage of the poly(vinyl acetate) in the polymer material is 10-90%. 
     
     
         12 . The method of  claim 9 , wherein a temperature of electrospinning the mixed solution is 20-75° C. 
     
     
         13 . The method of  claim 9 , wherein a flow rate of electrospinning the mixed solution is 0.005-0.5 mL/min. 
     
     
         14 . The method of  claim 9 , wherein a voltage of electrospinning the mixed solution is 2.0-30 kV. 
     
     
         15 . The method of  claim 9 , wherein an internal diameter of a needle head for electrospinning the mixed solution is 0.26-1.0 mm. 
     
     
         16 . The method of  claim 9 , wherein a distance between a tip of a needle head and a collector is 8-20 cm during electrospinning the mixed solution.