Preparation method, product and application of UV-resistant porous fiber with oriented pore structure
A technology of porous fibers and pore structures, which is applied in the field of preparation of ultraviolet-proof porous fibers, can solve the problems of limiting the application of porous fibers, unable to realize continuous large-scale preparation, etc., and achieves the effect of a simple preparation method.
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Embodiment 1
[0083] (1) Cut 4.5g of natural cocoons, boil and dry in 1% sodium carbonate solution, dissolve in 20ml of 9mol / ml lithium bromide solution, and dialyze for 24h to prepare a 22.5% silk protein solution.
[0084] Dissolve 0.5 g of chitosan powder in 10 ml of 1% acetic acid solution, stir for 30 min at a speed of 800 rpm / min to make it evenly mixed, and prepare a chitosan solution with a concentration of 50 mg / ml.
[0085] Mix 20ml of silk protein solution and 10ml of chitosan solution evenly, and centrifuge to remove air bubbles to obtain a homogeneous solution, wherein the mass ratio of silk protein to chitosan is 9:1.
[0086] Mix the ultraviolet shielding agent titanium dioxide nanoparticles with the above mixed solution in a mass ratio of 100:1 between silk protein and titanium dioxide.
[0087] (2) Put the mixed solution in the syringe, extrude the solution through the extrusion pump, place the copper ring in a low-temperature reaction bath (-100°C), and pass the solution t...
Embodiment 2
[0094](1) Cut 4.5g of natural cocoons, boil and dry in 1% sodium carbonate solution, dissolve in 20ml of 9mol / ml lithium bromide solution, and dialyze for 24h to prepare a 22.5% silk protein solution.
[0095] Dissolve 0.5 g of chitosan powder in 10 ml of 1% acetic acid solution, stir for 30 min at a speed of 800 rpm / min to make it evenly mixed, and prepare a chitosan solution with a concentration of 50 mg / ml.
[0096] After mixing 20ml of silk protein solution and 10ml of chitosan solution evenly, centrifuge to remove air bubbles to obtain a homogeneous solution, wherein the mass ratio of silk protein and chitosan is 9:1.
[0097] Mix the ultraviolet shielding agent zinc oxide nanoparticles with the above mixed solution at a mass ratio of 200:1 between silk protein and zinc oxide.
[0098] (2) Put the mixed solution in the syringe, extrude the solution through the extrusion pump, place the copper ring in a low temperature reaction bath (-30, -60, -90°C respectively), and pass...
Embodiment 3
[0103] (1) Cut 4.5g of natural cocoons, boil and dry in 1% sodium carbonate solution, dissolve in 20ml of 9mol / ml lithium bromide solution, and dialyze for 24h to prepare a 22.5% silk protein solution.
[0104] Dissolve 0.5 g of chitosan powder in 10 ml of 1% acetic acid solution, stir for 30 min at a speed of 800 rpm / min to make it evenly mixed, and prepare a chitosan solution with a concentration of 50 mg / ml.
[0105] After mixing 20ml of silk protein solution and 10ml of chitosan solution evenly, centrifuge to remove air bubbles to obtain a homogeneous solution, wherein the mass ratio of silk protein to chitosan is 9:1.
[0106] Mix the ultraviolet shielding agent organic nickel polymer with the above mixed solution at a mass ratio of 300:1 between silk protein and organic nickel polymer.
[0107] (2) Put the mixed solution in the syringe, extrude the solution through the extrusion pump, place the copper ring in a low-temperature reaction bath (the temperature is -100°C), p...
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