Method for preparing fiber nonwoven fabric for facial masks
A technology of non-woven fabrics and fibers, applied in the chemical characteristics of fibers, cellulose/protein conjugated rayon, non-woven fabrics, etc. The effect of increasing fracture strain and improving anti-infection ability
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[0034] A preparation method of fiber non-woven fabric for facial mask, comprising the steps of:
[0035] (1) Take silk and add 15-30 times the mass of silk with 4% Na 2 CO 3In the solution, stand at 90~100°C for 50~70min, filter, take the filter residue and dry it in an oven at 40~50°C for 20~24h to obtain degummed silk, take the degummed silk at a mass ratio of 1:15~25 and add reagent A to mix, Pour into a dialysis bag with a molecular weight cut-off of 10-14kDa, dialyze with deionized water for 4-6 days, take the dialysate and centrifuge at 2000-3000r / min for 5-10min, collect the supernatant to obtain pretreated silk fibroin protein solution;
[0036] (2) At 40~55°C, take the pretreated silk fibroin protein solution and add a crosslinking agent in a mass ratio of 100:1~4 to mix, and stir magnetically at 400~600r / min for 7~10h to obtain a crosslinked product. According to the mass ratio of 15~25:3~6:0.1, nano-hydroxyapatite liquid and auxiliary agent are mixed to obtain mo...
Embodiment 1
[0041] Cross-linking agent: take nijingping at a mass ratio of 1:12, and CaCl with a concentration of 0.03mol / L 2 The solutions are mixed to obtain the crosslinking agent.
[0042] Reagent A: Mix lithium bromide solution with a concentration of 3 mol / L and hexafluoroisopropanol at a volume ratio of 10:1 to obtain reagent A.
[0043] Reagent B: Mix 20% acetic acid solution with a mass fraction of 20% and PBS buffer with a pH of 6.3 at a volume ratio of 5:1 to obtain Reagent B.
[0044] Adjuvants: take dopamine hydrochloride and NaH at a mass ratio of 5:1:1 2 PO 4 、Na 2 HPO 4 Mix to get the adjuvant.
[0045] Nano-hydroxyapatite solution: Mix nano-hydroxyapatite, sodium citrate solution with a concentration of 1mol / L, and sodium bicarbonate at a mass ratio of 1:15:0.1 to obtain nano-hydroxyapatite solution.
[0046] Pretreatment of carp skin liquid: take carp skin, wash it with water 3 times the weight of carp skin, and dry it naturally to obtain dry matter. Take the dry m...
Embodiment 2
[0057] Cross-linking agent: Nijingin at a mass ratio of 3:12, CaCl with a concentration of 0.03mol / L 2 The solutions are mixed to obtain the crosslinking agent.
[0058] Reagent A: Mix lithium bromide solution with a concentration of 3 mol / L and hexafluoroisopropanol at a volume ratio of 10:1.5 to obtain reagent A.
[0059] Reagent B: Mix 20% acetic acid solution with a mass fraction of 20% and PBS buffer solution with a pH of 6.5 at a volume ratio of 5:1.5 to obtain Reagent B.
[0060] Adjuvant: take dopamine hydrochloride and NaH at a mass ratio of 5:1:1.2 2 PO 4 、Na 2 HPO 4 Mix to get the adjuvant.
[0061] Nano-hydroxyapatite solution: mix nano-hydroxyapatite, sodium citrate solution with a concentration of 1mol / L, and sodium bicarbonate at a mass ratio of 1:20:0.3 to obtain nano-hydroxyapatite solution.
[0062] Pretreatment of carp skin liquid: take carp skin, wash it with water 4 times the weight of carp skin, and dry it naturally to obtain a dry product. Take the...
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