Copper ion complexing poly gamma glutamic acid/chitosan/cotton blended antibacterial knitted fabric and preparation method thereof

A technology of glutamic acid and chitosan, applied in botany equipment and methods, preparation of spinning solution, conjugated synthetic polymer artificial filament, etc., can solve the problem of affecting the appearance of white or light-colored products and affecting the appearance of chitosan Fiber antibacterial, limited application and other issues, to achieve the effect of omitting the finishing process, ensuring natural style, and reducing production costs

Active Publication Date: 2020-12-25
QUFU NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although silver ions can kill or inhibit bacteria, silver is not an essential trace element for the human body, and as a heavy metal element, it is still potentially toxic to the human body
In addition, the chemical properties of silver ions are relatively active and sensitive to light and heat, especially after being irradiated by ultraviolet rays for a long time, they will be reduced to black elemental silver, which not only affects the antibacterial properties of chitosan fibers and their products, but also affects the white or light color. The appearance of the color product greatly limits its application

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Copper ion complexing poly gamma glutamic acid/chitosan/cotton blended antibacterial knitted fabric and preparation method thereof
  • Copper ion complexing poly gamma glutamic acid/chitosan/cotton blended antibacterial knitted fabric and preparation method thereof
  • Copper ion complexing poly gamma glutamic acid/chitosan/cotton blended antibacterial knitted fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Add ammonia water dropwise to 10mg / mL copper sulfate solution, then a light blue basic copper sulfate precipitate will form, continue to drop ammonia water until the precipitate is completely dissolved, and obtain copper ammonia complex and ion solution;

[0037] (2) Dissolve chitosan in an acetic acid solution with a volume concentration of 1%, stir evenly at room temperature and dilute it with deionized water to obtain a chitosan solution with a concentration of 2 mg / mL (deacetylation degree is 85.0); To prepare a poly-γ-glutamic acid solution, add the poly-γ-glutamic acid solution dropwise to an equal volume of chitosan solution, stir magnetically for 30 minutes, and mix thoroughly, then add 10 mg of titanium dioxide, 3 mg of anti-aging agent, 5 mg of silane Combined agent, magnetically stirred for 2h, added copper ammonium complex and ion solution, centrifuged for 40min, removed the supernatant, dissolved the precipitate with 20ml 1% acetic acid solution, obtaine...

Embodiment 2

[0041] (1) Add ammonia water dropwise to 10mg / mL cupric chloride solution, then a light blue basic copper sulfate precipitate will form, continue to drop ammonia water until the precipitate is completely dissolved, and obtain copper ammonia complex and ion solution;

[0042] (2) Dissolve chitosan in an acetic acid solution with a volume concentration of 1%, stir evenly at room temperature and dilute it with deionized water to obtain a chitosan solution with a concentration of 2 mg / mL (deacetylation degree is 95.0); To prepare a poly-γ-glutamic acid solution, add the poly-γ-glutamic acid solution dropwise to an equal volume of chitosan solution, stir magnetically for 30 minutes, and mix thoroughly, then add 10 mg of titanium dioxide, 3 mg of anti-aging agent, 5 mg of silane Combined agent, magnetically stirred for 2 hours, added copper ammonium complex and ion solution, centrifuged for 40 minutes, removed the supernatant, dissolved the precipitate with 20ml 1% acetic acid soluti...

Embodiment 3

[0046] (1) Add ammonia water dropwise to 10mg / mL copper nitrate solution, then a light blue basic copper sulfate precipitate will form, continue to add ammonia water dropwise until the precipitate is completely dissolved, and obtain copper ammonia complex and ion solution;

[0047] (2) Dissolve chitosan in an acetic acid solution with a volume concentration of 1%, stir evenly at room temperature and dilute it with deionized water to obtain a chitosan solution with a concentration of 2 mg / mL (deacetylation degree is 80.0); To prepare a poly-γ-glutamic acid solution, add the poly-γ-glutamic acid solution dropwise to an equal volume of chitosan solution, stir magnetically for 30 minutes, and mix thoroughly, then add 10 mg of titanium dioxide, 3 mg of anti-aging agent, 5 mg of silane Combined agent, magnetically stirred for 2h, added copper ammonium complex and ion solution, centrifuged for 40min, obtained the supernatant, dissolved the precipitate with 20ml 1% acetic acid solution...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention belongs to the field of functional textiles, and particularly relates to copper ion complexing poly gamma-glutamic acid(gamma-PGA) / chitosan(CS) / cotton blended antibacterial knitted fabric and a preparation method thereof. According to the knitted fabric, chitosan and poly gamma-glutamic acid are cross-linked, then a copper ammonia complex ion solution is added to prepare a spinning solution, the spinning solution is subjected to wet spinning, then stretching, water washing, after-finishing, water washing and drying are carried out to obtain copper ion complexing poly gamma-glutamic acid / chitosan composite fibers, and the blended antibacterial knitted fabric is prepared from cotton fiber yarn and the composite fibers. In the knitted fabric and the preparation method, carboxylof gamma-PGA and amino of CS have a very high coordination coefficient, and the structure is stable. Poly-gamma glutamic acid can be used as a water-retaining agent and a heavy metal ion adsorbent, and the loading rate of copper ions can be increased. In the knitted fabric and the preparation method, chitosan and the copper ions are combined to resist bacteria and have a synergistic effect, and the finally-prepared knitted fabric has better antibacterial performance, anti-static performance and flame retardance and is high in antibacterial durability.

Description

technical field [0001] The invention relates to the field of functional textiles, in particular to a copper ion complexed poly-γ-glutamic acid (γ-PGA) / chitosan (CS) / cotton blended antibacterial knitted fabric and a preparation method thereof. Background technique [0002] Chitosan is a natural polymer compound, which is a positively charged natural alkaline polysaccharide obtained by deacetylation of chitin, and is abundant in the shells of shrimp and crabs. Chitosan not only has good biocompatibility, biodegradability and non-toxicity, but also has good antibacterial properties, which can inhibit the growth of certain pathogenic microorganisms (such as Escherichia coli and Staphylococcus aureus). The biodegradability of chitosan also helps prevent the pollution of the environment after its products are discarded, and improves the micro-ecological properties of the soil. Chitosan has a positive charge, and this feature is used to cross-link with negatively charged poly-γ-gl...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F8/12D01F8/18D01F1/10D02G3/04D02G3/44D04B21/00
CPCD01F8/12D01F8/18D01F1/10D04B21/00D02G3/04D02G3/449D01F9/00D01D5/06D01D1/02D01F1/103A01P1/00D10B2401/13D04B1/16A01N59/20A01N25/10A01N25/34A01N55/02D01F8/02D04B21/16G05B2219/45194
Inventor 杨革高瑞霞车程川刘金锋巩志金孙阳陈琦
Owner QUFU NORMAL UNIV
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