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
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  • 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

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
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Example Embodiment

[0024] Example 1:

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

[0026] Prepare 250ml calcium nitrate solution with a concentration of 20wt% and mix it with 5ml 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 sal...

Example Embodiment

[0028] Example 2:

[0029] The cactus leaves are washed with deionized water and peeled to obtain the inner dan, then cut into pieces, crushed, filtered, separated and purified to obtain the cactus leaf extract. The extract is dispersed in deionized water to prepare 350ml with a volume percentage of 30% Add 7ml of 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 4h, then thaw at room temperature, cycle freeze-thaw 3 times, use The pH value of the NaOH solution was adjusted to 10.8 to obtain a uniform and stable dispersion of the cactus leaf extract.

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

Example Embodiment

[0033] Example 3:

[0034] Prepare aloe and cactus leaf extracts according to the methods of Examples 1 and 2, and disperse them in deionized water to prepare 300ml of 20% aloe leaf extract aqueous solution and 200ml of 40% cactus leaf extract aqueous solution. After blending them, add 7ml of 0.5wt% aqueous solution of amino-terminated hyperbranched compound, mix evenly to obtain a composite solution. After freezing treatment at -20℃ for 5h, thawing at room temperature for 6h, and after cycling freeze-thaw 3 times , Adjust its pH value to 11 with NaOH solution to obtain a uniform and stable plant leaf extract dispersion.

[0035] Prepare 750ml calcium chloride solution with a concentration of 30wt% and mix with 15ml sericin solution with a concentration of 1.5wt% to obtain a neutral sericin salt mixture, and then take 10g of the undegummed silk product and place it in the neutral sericin salt In the mixed solution, after immersion treatment at 40℃ for 60min, degumming by conventio...

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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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