Method of plasma grafting weight gaining for silk fibre

Abstract

The invention discloses a method for make low-temperature graft weight-increasing treatment on silk fiber using plasma technique, and its technical solution: firstly refining, washing and drying silk fiber, and then making low temperature plasma treatment and graft weight increasing treatment. Because parts of molecular bonds of proteins on inner and outer surfaces of the silk fiber are broken, active groups are produced to make the graft reaction relative smooth, effectively reducing the damage to the silk fiber; the grafting solution contains vinyl graft monomer, nonionic surface active agent, and so on, able to make graft copolymerization reaction on the inner and outer surfaces of the silk fiber, thus, able to give thick, elasticized modified effect to the silk fiber. It has the advantages of simple process, saving energy and high efficiency, and benefit to clean production and environmental protection, and has a wide application prospect.

Description

technical field [0001] The technical field of the present invention is the functional finishing of textile materials, in particular to a method of using plasma technology to graft and increase the weight of real silk fibers at low temperature Background technique [0002] Silk fiber has bright luster, smooth and soft feel, and is a high-grade textile fabric. Silk fiber is mainly composed of two proteins, silk fibroin and sericin, among which sericin accounts for about 25% of the total weight of silk fiber. The middle of each single filament is silk fibroin, and the outside is sericin. Sericin molecules are irregularly arranged in an amorphous structure, and the closer to the silk part, the more obvious its crystallinity, but the crystal part is much smaller than the silk part. Therefore, silk fibroin is more polar and water-soluble than sericin. For a long time, the dyeing process of silk fiber has been to remove the sericin first, and remove the s...

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Problems solved by technology

[0007] Among the above two technical solutions for sericin fixation, the first one is unstable in the air due to the use of cyanuric chloride, which is volatile, easy to absorb moisture, and can directly react with water to reduce its reactivity. The production has high environmental requirements, so it is difficult to adapt to the requirements of printing and dyeing processing

And the shortcoming of the active dye fixing sericin of cyanuric chloride derivative is: when removing unfixed or fixing weak sericin, the reactive dye will fall off from the fiber due to hydrolysis, which not only wastes the dyestuff, but also increases the weight of the problem. Sewage treatment capacity

The second kind is because the concentration of rare earth metal salts such as lanthanum, cerium and neodymium used is too high, is 0.01~0.10g / ml, these heavy metal ions will increase the difficulty to the sewage treatment of the back, because all adopt biochemical technology (activated sewage at present) mud method or biofilm method) for sewage treatment, and the presence of heavy metal ions such as lanthanum, cerium and neodymium are all toxic to microorganisms

In addition, sericin fixation can only increase the weight of silk fibers but cannot modify them, so it is still insufficient.

[0008] In a word, the processing methods of these weight-increasing real silk fibers mentioned above all have certain shortcomings, especially the pollution impact on the environment is relatively large, and it is difficult to realize industrial production at present.

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