Fiber division method of silk fibroin fibers

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...

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 salts, which increases the complexity of the process, reduces production efficiency, and prevents mass production

[0004] In recent years, people have prepared nanofibers with the help of ultrasonic waves, but the action area of ​​ultrasonic waves on silk fibers usually stays in the range of about 1 micron within the surface of the fibers, which greatly reduces the actual efficiency of fiber splitting.

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