Process for producing regenerated silk protein super fine fiber

Abstract

The production process of superfine regenerated silk protein fiber features that silk protein is first dissolved in inorganic salt, the solution is desalted and concentrated to produce high concentration and high spinnability regenerated silk protein aqua, and the aqua is electrostatically spun directly into the superfine regenerated silk protein fiber. The fiber has excellent performance, has stable silk protein-II crystal structure without need of post-treatment. The present invention uses water without toxicity and harm as solvent to make the superfine fiber good in biocompatibility and suitable for use as biomedicine material. The present invention has wide material source including common silk and silk leftover, and the product of superfine regenerated silk protein fiber has its specification regulated with the use.

Description

technical field [0001] The invention relates to a method for producing regenerated protein fibers in chemical fiber manufacturing, in particular to a process technology for spinning regenerated fibroin superfine fibers by electrospinning with a high-concentration regenerated fibroin aqueous solution as spinning stock solution. Background technique [0002] Silk is a natural fiber with excellent properties, which has been used as a high-end clothing material for thousands of years. With the continuous development of spinning technology, it is hoped that silk fibers of different specifications can be obtained so that they can be used in military, biological, medical and textile fields. In order to meet various special needs in the above-mentioned fields, and at the same time overcome the limitations of natural conditions such as geography and climate, to produce regenerated silk protein fibers of different specifications and yields according to human wishes, it is necessary to...

AI Technical Summary

Problems solved by technology

However, the structure of amorphous and silk fibroin I crystal forms is very unstable, and it is easy to change under conditions such as heat, solvent, and stress, and the mechanical properties of the fiber are deteriorated.

Since the fibroin fibers obtained in the above-mentioned patents and reports are all unstable amorphous structures, the direct use performance of the fibers is poor. Only when the amorphous structure of the silk fibroin is transformed into a stable silk II crystal form, the regenerated silk protein fiber has better use value