Nanofiber and method for fabricating the same

Abstract

A nanofiber and fabrication methods thereof. The method for fabricating the nanofiber includes preparing an electrospinning composition and performing an electrospinning process employing the electrospinning composition. Particularly, the electrospinning composition includes a polymer and an additive as a uniform solution in an organic solvent, wherein the additive renders the electronic characteristic of the polymer.

1 . A nanofiber, comprising the products of an electrospinning composition subjected to an electrospinning process, wherein the electrospinning composition comprises a polymer and an additive as a uniform solution in an organic solvent or water, and the additive renders the electronic characteristic of the polymer.  
     
     
         2 . The nanofiber as claimed in  claim 1 , wherein the polymer comprises water-soluble polymer, oil-souble polymer, biopolymer or combination thereof.  
     
     
         3 . The nanofiber as claimed in  claim 1 , wherein the polymer comprises polyethylene, polyvinyl alcohol, sodium alginate, gelatin, collagen, polystyrene, polycarbonate, chitosan, fluorine polymer, polyester, polyamide, polyimide, or combination thereof.  
     
     
         4 . The nanofiber as claimed in  claim 1 , wherein the additive is present in an amount of 0.01 wt % to 15 wt %, based on the weight of the electrospinning composition.  
     
     
         5 . The nanofiber as claimed in  claim 1 , wherein the additive comprises organic or inorganic salt, organic or inorganic acid, organic or inorganic base, polar compound, or combination thereof.  
     
     
         6 . The nanofiber as claimed in  claim 5 , wherein the organic or inorganic salt comprises fluorine salt, chlorine salt, bromine salt, iodine salt, sulfate salt, nitrate salt, carboxylate salt, oxalate salt, borate salt, sulfonate salt, perchlorate salt, citrate salt, or combination thereof.  
     
     
         7 . The nanofiber as claimed in  claim 5 , wherein the organic or inorganic salt comprises lithium salt, sodium salt, potassium salt, beryllium salt, calcium salt, aluminum salt, magnesium salt, titanium salt, or combination thereof.  
     
     
         8 . The nanofiber as claimed in  claim 5 , wherein the organic acid, inorganic acid, organic base, or inorganic base is monoacid, polyacid, monobase, or polybase, comprising C1-18 carboxylic acid, C1-18 alcohol, ammonia, imidazole, metal hydroxyl compound, hydrochloric acid, nitric acid, boric acid, perchloric acid, sulfuric acid, phosphoric acid, lactic acid, benzoic acid, or citric acid.  
     
     
         9 . The nanofiber as claimed in  claim 5 , wherein the polar compound comprises pyridine, formamide, dimethylformamide, N-dimethylacetamide, N-methylpyrrolidone, valerolactam, caprolactam, o-dichlorobenzene, tetramethylurea, acetonitrile, or combination thereof.  
     
     
         10 . The nanofiber as claimed in  claim 1 , wherein the nanofiber has an average diameter of 15˜500 nm.  
     
     
         11 . The nanofiber as claimed in  claim 1 , wherein the electrospinning process has an applied voltage of 20˜50 KV.  
     
     
         12 . The nanofiber as claimed in  claim 1 , wherein the electrospinning process employs a spinneret with a distance between a nozzle and a receiving plate of 10˜30 cm.  
     
     
         13 . The nanofiber as claimed in  claim 1 , wherein the additive is an electrolyte.  
     
     
         14 . A method for fabricating nanofiber, comprising: providing an electrospinning composition; and subjecting the electrospinning composition to an electrospinning process, wherein the electrospinning composition comprises a polymer and an additive as a uniform solution in an organic solvent, and the additive renders the electronic characteristic of the polymer.  
     
     
         15 . The method as claimed in  claim 14 , wherein polymer comprises water-soluble polymer, oil-souble polymer, biopolymer or combination thereof.  
     
     
         16 . The method as claimed in  claim 14 , the polymer comprises polyethylene, polyvinyl alcohol, sodium alginate, gelatin, collagen, polystyrene, polycarbonate, chitosan, fluorine polymer, polyester, polyamide, polyimide, or combination thereof.  
     
     
         17 . The method as claimed in  claim 14 , wherein the additive is present in an amount of 0.01 wt % to 15 wt %, based on the weight of the electrospinning composition.  
     
     
         18 . The method as claimed in  claim 14 , wherein the additive comprises organic or inorganic salt, organic or inorganic acid, organic or inorganic base, polar compound, or combination thereof.  
     
     
         19 . The method as claimed in  claim 18 , wherein the organic or inorganic salt comprises fluorine salt, chlorine salt, bromine salt, iodine salt, sulfate salt, nitrate salt, carboxylate salt, oxalate salt, borate salt, sulfonate salt, perchlorate salt, citrate salt, or combination thereof.  
     
     
         20 . The method as claimed in  claim 18 , wherein the organic or inorganic salt comprises lithium salt, sodium salt, potassium salt, beryllium salt, calcium salt, aluminum salt, magnesium salt, titanium salt, or combination thereof.  
     
     
         21 . The method as claimed in  claim 18 , wherein the organic acid, inorganic acid, organic base, or inorganic base is monoacid, polyacid, monobase, or polybase, comprising C1-18 carboxylic acid, C1-18 alcohol, ammonia, imidazole, metal hydroxyl compound, hydrochloric acid, nitric acid, boric acid, perchloric acid, sulfuric acid, phosphoric acid, lactic acid, benzoic acid, or citric acid.  
     
     
         22 . The method as claimed in  claim 18 , wherein the polar compound comprises pyridine, formamide, dimethylformamide, N-dimethylacetamide, N-methylpyrrolidone, valerolactam, caprolactam, o-dichlorobenzene, tetramethylurea, acetonitrile, or combination thereof.  
     
     
         23 . The method as claimed in  claim 14 , wherein the nanofiber has an average diameter of 15˜500 nm.  
     
     
         24 . The method as claimed in  claim 14 , wherein the electrospinning process has an applied voltage of 20˜50 KV.  
     
     
         25 . The method as claimed in  claim 14 , wherein the electrospinning process employs a spinneret with a distance between a nozzle and a receiving plate of 10˜30 cm.  
     
     
         26 . The method as claimed in  claim 14 , wherein the additive is an electrolyte.