Preparation method of silk fibroin nanofiber whiskers
A technology of silk fibroin and nanofibers, applied in the preparation of silk fibroin nanofiber whiskers, using ultrasonic-assisted sulfuric acid to prepare silk fibroin nanofiber whiskers, can solve the complex preparation process and long time-consuming silk fibroin nanofibers , fewer preparation methods, etc., to achieve good repeatability, good product recovery, and short time-consuming effects
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Embodiment 1
[0023] 1) Cut silkworm cocoons into about 1×1cm 2 For small pieces, use 1000ml of 0.5% (w / w) Na 2 CO 3 The solution was boiled for 30 minutes to degumming, washed with deionized water repeatedly, repeated 3 times, and dried overnight at 60°C to obtain silk fibroin;
[0024] 2) Configure 60wt% H 2 SO 4 After solution, preheat it to 45°C in a constant temperature water bath, transfer it to a 100w ultrasonic reactor, pull apart the more obvious entangled parts of the silk fibroin obtained in step 1), and put it in a preheated well H 2 SO 4 React in the solution for 30min, silk fibroin and H 2 SO 4 The mass ratio of the solution is 1:10, the reaction is terminated by using room temperature deionized water with 5 times the volume of the acid solution, and the acid solution is cleaned to obtain the reactant;
[0025] 3) The reactant obtained in step 2) is diluted with deionized water, neutralized with 0.2wt% NaOH solution, and cleaned with deionized water to desalinize the s...
Embodiment 2
[0029] 1) Cut silkworm cocoons into about 1×1cm 2 For small pieces, use 1000ml of 0.5% (w / w) Na 2 CO 3 The solution was boiled for 30 minutes to degumming, washed with deionized water repeatedly, repeated 3 times, and dried overnight at 60°C to obtain silk fibroin;
[0030] 2) Configure 45wt% H 2 SO 4 After solution, preheat it to 75°C in a constant temperature water bath, transfer it to a 100w ultrasonic reactor, pull apart the more obvious entangled parts of the silk fibroin obtained in step 1), and put it in a preheated well H 2 SO 4 React in the solution for 30min, silk fibroin and H 2 SO 4 The mass ratio of the solution is 1:10, the reaction is terminated by using room temperature deionized water with 5 times the volume of the acid solution, and the acid solution is cleaned to obtain the reactant;
[0031] 3) The reactant obtained in step 2) is diluted with deionized water, neutralized with 0.05wt% NaOH solution, and cleaned with deionized water to desalinize the ...
Embodiment 3
[0035]1) Cut silkworm cocoons into about 1×1cm 2 For small pieces, use 1000ml of 0.5% (w / w) Na 2 CO 3 The solution was boiled for 30 minutes to degumming, washed with deionized water repeatedly, repeated 3 times, and dried overnight at 60°C to obtain silk fibroin;
[0036] 2) Take a dialysis bag with an appropriate length and a molecular weight cut-off of 7000kDa, boil it with deionized water for 10 minutes, wash it with deionized water for 3 times, and set aside;
[0037] 3) Configure 45wt% H 2 SO 4 After solution, put it in a constant temperature water bath and preheat it to 45°C, transfer it to a 200w ultrasonic reactor, pull apart the more obvious entangled part of the silk fibroin obtained in step 1), and put it in a preheated well H 2 SO 4 React in solution for 180min, silk fibroin and H 2 SO 4 The mass ratio of the solution is 1:20, the reaction is terminated by using room temperature deionized water with 5 times the volume of the acid solution, and the acid sol...
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