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Preparation method of nano-silver antibacterial real silk

A nano-silver antibacterial and silk technology, used in textiles and papermaking, fiber processing, animal fibers, etc., can solve the problems of poor antibacterial washability, not long-lasting antibacterial performance, and staying binding force of antibacterial agents to achieve long-term antibacterial properties. Functional washability, long-lasting antibacterial function, strong adhesion and deposition

Inactive Publication Date: 2013-02-20
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the antibacterial finishing of most silk products is achieved by directly soaking the products with antibacterial agents. The disadvantage of this method is that the antibacterial agents only stay on the surface of the silk thread or its products and the binding force is weak, so it is easy to fall off. As a result, the antibacterial performance is not durable enough, and the antibacterial and washable performance of the product is poor

Method used

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  • Preparation method of nano-silver antibacterial real silk
  • Preparation method of nano-silver antibacterial real silk

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The aloe leaves are washed with deionized water and peeled to obtain inner denim, and then cut into pieces, crushed, filtered, separated and purified to obtain the aloe leaf extract. Disperse the aloe leaf extract in deionized water, prepare 150ml volume percent concentration of 20% aloe leaf extract aqueous solution, add 7.5ml concentration of 0.05wt% amino terminal hyperbranched compound aqueous solution, mix well to obtain a composite solution, place in After freezing at -20°C for 3 hours, thawing at room temperature for 6 hours, and 2 cycles of freezing and thawing, the pH value of the composite solution was adjusted to 10.5 with NaOH solution to obtain a uniform and stable dispersion of aloe vera leaf extract.

[0026] Prepare 250ml of calcium nitrate solution with a concentration of 20wt%, mix it with 5ml of a sericin solution with a molecular weight of 1-20KDa and a concentration of 2wt%, the molecular weight of sericin is 1-20KDa, to obtain a neutral sericin salt...

Embodiment 2

[0029] Wash the cactus leaves with deionized water and peel them to obtain inner denim, then cut into pieces, pulverize, filter, separate and purify to obtain cactus leaf extracts, disperse the extracts in deionized water, and prepare 350ml volume percentage of 30% Add 7ml aqueous solution of amino-terminated hyperbranched compound with a concentration of 0.5wt% to the aqueous solution of cactus leaf extract, mix well to obtain a composite solution, freeze at -20°C for 4 hours, thaw at room temperature, freeze-thaw cycle 3 times, use NaOH solution adjusted its pH value to 10.8 to obtain a uniform and stable cactus leaf extract dispersion.

[0030]Prepare 500ml of calcium chloride solution with a concentration of 25wt%, and mix it with 10ml of a silk fibroin solution with a concentration of 1.0wt%. The molecular weight of silk fibroin is 1-20KDa to obtain a neutral silk fibroin salt mixture. The degummed silk fiber is placed in the neutral silk fibroin protein salt mixture, aft...

Embodiment 3

[0034] Prepare aloe and cactus leaf extract respectively by the method for embodiment 1 and 2, be dispersed in deionized water, preparation 300ml volume percentage is the aloe leaf extract aqueous solution of 20% and 200ml volume percentage is the cactus leaf extract aqueous solution of 40%, After blending them, add 7ml of an amino-terminated hyperbranched compound aqueous solution with a concentration of 0.5wt%, and mix well to obtain a composite solution. After freezing for 5 hours at -20°C, thaw at room temperature for 6 hours, and cycle freeze-thaw for 3 times. , using NaOH solution to adjust its pH value to 11 to obtain a uniform and stable plant leaf extract dispersion.

[0035] Prepare 750ml of calcium chloride solution with a concentration of 30wt%, and mix it with 15ml of a sericin solution with a concentration of 1.5wt% to obtain a neutral sericin salt mixture, then take 10g of undegummed silk products and place them in neutral sericin salt In the mixed solution, aft...

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Abstract

The invention discloses a preparation method of nano-silver antibacterial real silk. The method comprises the following steps of: placing the un-degummed real silk thread or product in neutral silk proteinate mixed liquid to remove sericin, soaking the product in a silver nitrate aqueous solution, performing padding treatment in plant leaf extract dispersion liquid, taking out the product, and washing, drying or airing to obtain the antibacterial real silk or product with in-situ formation of nano-silver. According to the technical scheme of the invention, the fibril structure of fibroin fiber is partially separated or puffed and then subjected to two-step impregnation to sequentially realize adsorptive fixation, in-situ growth and reduction of silver ions on the real silk surface and in the fiber; the generated nano-silver is permeated and diffused inside and on the surface of the real silk fiber / textile; and the obtained nano-silver antibacterial real silk product has a long-acting antibacterial function and good washing resistance.

Description

technical field [0001] The invention relates to a preparation method of nano-silver antibacterial real silk, which belongs to the technical field of textile finishing. Background technique [0002] As people's awareness of health and environmental protection continues to strengthen, while paying attention to the beauty and comfort of clothing, higher requirements are put forward for its health care function. Silk products are favored by people for their soft texture, gorgeous appearance, moisture absorption, breathability, smoothness and comfort. The natural protein structure makes silk a textile material with a good affinity for the human body, but it is also a suitable place for bacteria to breed and spread. , the reproduction of bacteria not only discolors, molds and degrades silk products, but also endangers people's health. Therefore, the research and development of antibacterial silk products is of great significance. [0003] In recent years, nanotechnology has devel...

Claims

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Application Information

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IPC IPC(8): D06M11/83D06M15/15D06M101/10
Inventor 林红陈宇岳熊佳庆
Owner SUZHOU UNIV
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