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A kind of preparation method and application of quaternary ammonium salt-n-halamine type nano antibacterial fiber

A nano-antibacterial fiber, quaternary ammonium salt technology, applied in the direction of animal fiber, plant fiber, fiber treatment, etc., can solve the problems of limiting the wide application of tree cotton fiber, poor cohesion, easy to fly, etc., to achieve difficult drug resistance, long-lasting effect , not easy to regenerate the effect

Active Publication Date: 2020-08-25
YULIN NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the tree cotton fiber is used on a large scale, it is easy to fly, the cohesion is poor, and it is difficult to form a strip. This is the main reason that limits the wide application of the tree cotton fiber.

Method used

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  • A kind of preparation method and application of quaternary ammonium salt-n-halamine type nano antibacterial fiber
  • A kind of preparation method and application of quaternary ammonium salt-n-halamine type nano antibacterial fiber
  • A kind of preparation method and application of quaternary ammonium salt-n-halamine type nano antibacterial fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The preparation method of the quaternary ammonium salt-N-halamine type nano antibacterial fiber of the present invention includes the following steps:

[0048] A: The mixed fiber of tree cotton fiber and cotton fiber is soaked in a 70% ethylenediamine solution with a mass fraction of 1:55 at a bath ratio of 1:55, heated in a water bath to 35°C, heated for 3 hours, and washed with ethanol and purified water alternately Cotton fiber twice, add epichlorohydrin to tree cotton fiber at a bath ratio of 1:3, and add sodium hydroxide solution with a molar concentration of 0.005mol / L at a bath ratio of 1:6, and stir at 28°C React for 8 hours, then wash with purified water, put in an oven and dry at 55°C to obtain activated epoxy fiber;

[0049] B: After mixing the epoxy fiber of step A and the 8% polyamino polymer solution in a bath ratio of 1:45, heat to 65°C, stir and react for 3.5 hours, and then alternately wash the reaction with ethanol and purified water The product is dried a...

Embodiment 2

[0062] The preparation method of the quaternary ammonium salt-N-halamine type nano antibacterial tree cotton fiber of the present invention includes the following steps:

[0063] A: Soak the tree cotton fiber into 72% ethylenediamine solution at a bath ratio of 1:57, heat it to 37°C in a water bath, and wash the tree cotton fiber alternately with ethanol and purified water for 3.3 hours. Add epichlorohydrin to the tree cotton fiber at a bath ratio of 1:3.4, and add a sodium hydroxide solution with a molar concentration of 0.007mol / L at a bath ratio of 1:6.3, stir and react at 28.5℃ for 8.4h, then Rinse with purified water and put it in an oven to dry at 57°C to obtain activated epoxy tree cotton fiber;

[0064] B: Mix the epoxy tree cotton fiber of step A with the 8.6% polyamino polymer solution at a bath ratio of 1:48, then heat to 68°C, stir and react for 3.8 hours, then alternate with ethanol and purified water Wash the reaction product and then dry it at 48°C to obtain polyami...

Embodiment 3

[0077] The preparation method of the quaternary ammonium salt-N-halamine type nano antibacterial hemp fiber of the present invention includes the following steps:

[0078] A: The hemp fiber is immersed in a 73% ethylenediamine solution at a bath ratio of 1:60. The hemp fiber is heated to 38°C in a water bath. After heating for 3.7 hours, the hemp fiber is washed alternately with ethanol and purified water twice. Add epichlorohydrin to the fiber at a bath ratio of 1:3.7, and a sodium hydroxide solution with a molar concentration of 0.008mol / L at a bath ratio of 1:6.6, stir and react at 29°C for 8.8h, then use purified water Wash it and put it in an oven to dry at 59°C to obtain activated epoxy hemp fiber;

[0079] B: Mix the epoxy hemp fiber of step A and the 9% polyamino polymer solution with a volume fraction of 1:50 at a bath ratio of 1:50, heat to 69°C, stir and react for 4.2h, and then alternately wash with ethanol and purified water The reaction product is dried at 50°C to ob...

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Abstract

The invention discloses a preparation method and application of a quaternary ammonium salt-N-halamine type nano-antibacterial fiber. After the natural fiber is activated and pretreated, it is grafted with a polyamino polymer compound or a polyamino polymercapto polymer compound. After being grafted with a quaternary ammonium salt, crosslinking is carried out by a crosslinking agent, and the quaternary ammonium salt-N-halamine type nano antibacterial fiber of the present invention is obtained after bleaching; the nano antibacterial fiber of the present invention has both contact type and release type. The antibacterial function of the functional group greatly speeds up the sterilization speed, and it can also be sterilized under normal temperature and pressure. It has strong antibacterial property, long-lasting effect, and is not easy to produce drug resistance. The fiber antibacterial material can be made into medical supplies, such as cotton swabs, cotton Balls, gauze, masks, surgical gowns, etc., can be widely used in food packaging, food preservation, medical equipment, public health, water purification systems and many other fields, and have broad application prospects.

Description

Technical field [0001] The invention relates to the technical field of polymer materials, and more specifically to a preparation method and application of a quaternary ammonium salt-N-halamine type nano antibacterial fiber. Background technique [0002] With the improvement of living conditions, people pay more and more attention to the safety, nutrition, sensory, taste and flavor of food. As the main means to extend the shelf life of food-such as moist heat steam sterilization, dry heat sterilization, boiling sterilization, pasteurization, etc., sterilization methods often lead to deterioration of food quality, including nutritional loss, texture change, and color Change, taste change, smell change, etc. In order to avoid the destruction of heat-sensitive nutrients caused by heating, keep the color, fragrance and taste of the items as much as possible. In recent years, cold sterilization technology is being extensively studied and is expected to be applied to food sterilizatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M13/332D06M13/11D06M15/263D06M13/463D06M13/224D06M11/30D06M11/53D06M13/123A23L5/20D06M101/06D06M101/10
CPCA23L5/27D06M11/30D06M11/53D06M13/11D06M13/123D06M13/224D06M13/332D06M13/463D06M15/263D06M2101/06D06M2101/10
Inventor 聂国朝吴艳华
Owner YULIN NORMAL UNIVERSITY
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