Fiber division method of silk fibroin fibers

A silk fiber and fiber technology, applied in the field of nanomaterial preparation, can solve problems such as inability to mass produce, reduce production efficiency, and increase process complexity

Inactive Publication Date: 2016-06-29
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In order to obtain nano-silk fibroin, the process method commonly used in the industry is electrospinning, which requires regenerated silk fibroin solution as raw material, and the cost of obtaining regenerated silk fibroin is relatively high, because the preparation of regenerated silk fibroin is relatively expensive. The process generally includes a 72-hour dialysis step to remove inorganic sal

Method used

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  • Fiber division method of silk fibroin fibers
  • Fiber division method of silk fibroin fibers
  • Fiber division method of silk fibroin fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Configure the soaking solution, the soaking solution is a mixed aqueous solution composed of 0.05% sodium carbonate and 0.05% trisodium phosphate, then heat the soaking solution so that the temperature of the soaking solution is maintained at 40 ° C, and the raw silk fiber in the comparative example After soaking in the soaking liquid for 1 hour, take it out and dry to obtain soaked fibers to be treated by ultrasonic fiber splitting. Place the soaked fiber in the aqueous solution and use the same conditions as in the comparative example to carry out ultrasonic fiber splitting treatment. After the treatment, the silk fiber is scanned by electron microscope to obtain Figure 5 ,From Figure 5 It can be seen that the silk fibroin fibers have basically been transformed into nano silk fibres, the conversion rate is 70%, and the size of the formed silk fibroin nanofibers is 50nm-300nm.

[0033] In addition, in this example, X-ray diffraction tests were performed on the raw s...

Embodiment 2

[0036] Basically consistent with Example 1, the difference is that the concentrations of sodium carbonate and trisodium phosphate are 0.1%, the temperature of the soaking solution is 35 ° C, and the soaking time is 3 hours. After the treatment, the silk fiber is scanned by electron microscope to obtain Figure 9 ,From Figure 9 It can be seen that the silk fibroin fibers have basically been transformed into nano silk fibres, the conversion rate is 75%, and the size of the formed silk fibroin nanofibers is 50nm-300nm.

Embodiment 3

[0038] Basically consistent with Example 1, the difference is that the concentration of sodium carbonate and trisodium phosphate is 0.4%, the temperature of the soaking solution is 50 ° C, and the soaking time is 5 hours. After the treatment, the silk fiber is scanned by an electron microscope to obtain Figure 10 ,From Figure 10 It can be seen that the silk fibroin fibers have basically been transformed into nano silk fibres, the conversion rate is 80%, and the size of the formed silk fibroin nanofibers is 50nm-300nm.

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Abstract

The invention belongs to the technical field of preparation of nano materials and relates to a fiber division method of silk fibroin fibers, aiming at solving the problems that a fiber division effect on the silk fibroin fibers is not good when only ultrasonic waves are used so that the yield of the silk fibroin nano fibers keeps a relatively low level all the time. The fiber division method of the silk fibroin fibers comprises the following steps: adding the silk fibroin fibers into a soaking solution and soaking to obtain soaked fibers; carrying out fiber division on the soaked fibers in a treatment solution by using the ultrasonic waves to obtain a rough product; and finally, removing the treatment solution in the rough product to obtain the silk fibroin nano fibers, wherein the soaking solution is a water solution of sodium carbonate and alkali metal phosphate, the treatment solution is the soaking solution or water, the alkali metal phosphate is trisodium phosphate or tripotassium phosphate, and the concentration of the sodium carbonate and the alkali metal phosphate is 0.05%-5%. With the adoption of the technical scheme, the technical problems above can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation, and relates to a method for dividing silk fibers. The silk fibers in the invention generally refer to silk fibers obtained by degumming from silk unless otherwise specified. Of course, for For other silk fibers, those skilled in the art can still divide the fibers according to the present invention, and obtain silk nanofibers. Background technique [0002] Silk is called the second skin of the human body and is a high-quality textile raw material. In recent years, with the in-depth research on the structure and properties of silk and the development of new silk materials, silk has been widely used in food, cosmetics, health care products and medicine. . As a kind of natural polymer protein material through natural selection and biological evolution, the silk fiber obtained by degumming silk has many advantages, and has a long history of application in the field of surgery as sur...

Claims

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Application Information

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IPC IPC(8): D02J1/18
CPCD02J1/18
Inventor 蒋彦可夏庆友
Owner SOUTHWEST UNIVERSITY
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