Application of nitrogen-contained ionic liquid to polyurethane complex fiber
A composite fiber and nitrogen ion technology, applied in the textile field, can solve the problems of cumbersome preparation methods, short service life of polyurethane antibacterial fibers, and reduced antibacterial efficiency, and achieve good thermal and chemical stability, low cost, easy penetration and oozing effect
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Embodiment 1
[0051] Step (1). The polyurethane is vacuum-dried at 100° C. for 72 hours;
[0052] Step (2). Add 20g of dried polyurethane and 1g of silver nitrate solid to 100g of N,N-dimethylformamide in a mass ratio of 100:5, and magnetically stir for 4 hours at room temperature; 2 g of sodium citrate was added as a solid, wherein the mass ratio of silver nitrate and sodium citrate was 1:2, and magnetically stirred at room temperature for 4 hours to obtain a solution of the electrospinning precursor.
[0053] Step (3). First, suck 2 ml of the prepared electrospinning precursor solution into a 5 ml medical syringe syringe, connect the positive electrode of the high-voltage power supply to the spinning stainless steel needle, connect the negative electrode to aluminum foil, and place the aluminum foil at the horizontal position of the stainless steel needle 10 centimeters is used as a collecting plate, and the polyurethane nanofiber film can be collected on the aluminum foil by providing a ...
Embodiment 2
[0056] Step (1). The polyurethane and 1-butyl-3-methylimidazolium hexafluorophosphate were vacuum-dried at 100° C. for 72 hours;
[0057] Step (2). 20g of dried polyurethane and 1-butyl-3-methylimidazolium hexafluorophosphate are added to 100g of N,N-dimethylformamide in a mass ratio of 100:0.1. Stir magnetically for 4-8 hours; after obtaining a uniform solution, a solution of the electrospinning precursor is obtained.
[0058] Step (3). First, suck 2 ml of the prepared electrospinning precursor solution into a 5 ml medical syringe syringe, connect the positive electrode of the high-voltage power supply to the spinning stainless steel needle, connect the negative electrode to aluminum foil, and place the aluminum foil at the horizontal position of the stainless steel needle 10 centimeters is used as a collecting plate, and the polyurethane nanofiber film can be collected on the aluminum foil by providing a voltage of 15 kV; the spinning is completed, and the power is turned of...
Embodiment 3
[0060] Step (1). The polyurethane and 1-butyl-3-methylimidazolium hexafluorophosphate were vacuum-dried at 100° C. for 72 hours;
[0061] Step (2). 20g of dried polyurethane and 0.2g of 1-butyl-3-methylimidazolium hexafluorophosphate are added to 100g of N,N-dimethylformamide in a mass ratio of 100:1, at room temperature Under magnetic stirring for 4 hours; after obtaining a uniform solution, a solution of the electrospinning precursor was obtained.
[0062] Step (3). First, suck 2 ml of the prepared electrospinning precursor solution into a 5 ml medical syringe syringe, connect the positive electrode of the high-voltage power supply to the spinning stainless steel needle, connect the negative electrode to aluminum foil, and place the aluminum foil at the horizontal position of the stainless steel needle 10 centimeters is used as a collecting plate, and the polyurethane nanofiber film can be collected on the aluminum foil by providing a voltage of 15 kV; the spinning is comple...
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