Spider silk protein/polylactic acid composite nano fibre yarn and preparation method thereof

Abstract

The invention discloses a method for preparing spider silk protein / polylactic acid composite nano-fiber yarn. The method comprises the following steps of preparing a spinning solution, preparing a bath solution and then adopting an improved electrostatic spinning method to guide, heat, wind and shape bunched fibers, so as to obtain the spider silk protein / polylactic acid composite nano-fiber yarn. The composite nano-fiber yarn of the invention can be continuously spun for more than 10 hours and have no broken ends, and a certain amount of spider silk protein effectively reduces the diameter of the fibers and improves the strength of the yarn. In addition, the fracture strength and flexibility of the composite nano-fiber yarn can be further improved through secondary stretching and combined twisting, so that the composite nano-fiber yarn can be applied in biomedical materials and other fields better.

Description

technical field

[0001] The invention relates to a continuous nano-scale fiber yarn, in particular to a nano-scale fiber yarn composed of polylactic acid and spider silk protein and a preparation method thereof. Background technique

[0002] Spider silk has become one of the research hotspots at home and abroad because of its excellent mechanical properties and biocompatibility. The application of spider silk as a protein fiber in the field of biomaterials is very impressive, but the problem that plagues researchers is that the amount is too small, and it is difficult to carry out conventional textile processing. Tiger tarantula is a kind of spider that can be cultivated artificially. It is raised in a special spider farm. Although its main purpose is to extract toxins for pharmaceutical use, at the same time, a large amount of spider silk can be obtained through this way fiber, which provides a raw material source for the processing of regenerated spider silk.

[0003] At ...

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