Application of Ionic Liquids in Polylactic Acid Composite Fibers
An ionic liquid and composite fiber technology, applied in the textile field, can solve the problems of dissolution, environmental pollution, poor temperature resistance of organic antibacterial agents, etc.
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Embodiment 1
[0059] Step (1). Dry the polylactic acid in vacuum at 100°C for 72 hours;
[0060] Step (2). Add 20g of dried polylactic acid and 1g of commercially available organic antibacterial agent to 100g of dichloromethane in a mass ratio of 100:5, and stir magnetically for 4 hours at room temperature; after obtaining a uniform solution, you get Solutions of electrospinning precursors.
[0061] 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 polylactic acid 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 off.
[0062] The polylactic acid nanofib...
Embodiment 2
[0064] Step (1). Dry the polylactic acid in vacuum at 100°C for 72 hours;
[0065] Step (2). Add 20 g of dried polylactic acid and 1 g of silver nitrate solid to 100 g of dichloromethane in a mass ratio of 100:5, and stir magnetically at room temperature for 4 hours; after obtaining a uniform solution, add 2 g of solid to it Sodium citrate, wherein the mass ratio of silver nitrate and sodium citrate is 1:2, was magnetically stirred at room temperature for 4 hours, and a solution of the electrospinning precursor was obtained.
[0066] 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 polyamide nanofiber film can be collected on...
Embodiment 3
[0069] Step (1). Dry polylactic acid and 1-butyl-3-methylimidazolium hexafluorophosphate at 100°C for 72 hours in vacuum respectively;
[0070] Step (2). Add 20 g of dried polylactic acid and 1-butyl-3-methylimidazolium hexafluorophosphate to 100 g of dichloromethane in a mass ratio of 100:0.1, and stir magnetically at room temperature for 4 to 8 hours ; After obtaining a homogeneous solution, an electrospinning precursor solution is obtained.
[0071] 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 polylactic acid nanofiber film can be collected on the aluminum foil by providing a voltage of 15 kV; the spinning is completed...
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