Preparation method and application of quaternary ammonium salt-N-halamine nano antibacterial fibers

A nano-antibacterial fiber, quaternary ammonium salt technology, applied in fiber treatment, plant fiber, animal fiber and other directions, can solve the problems of limiting the wide application of tree cotton fiber, poor cohesion, difficult to form strips, etc. Long-lasting, not easily reproducible effect

Active Publication Date: 2018-08-17
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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  • Preparation method and application of quaternary ammonium salt-N-halamine nano antibacterial fibers
  • Preparation method and application of quaternary ammonium salt-N-halamine nano antibacterial fibers
  • Preparation method and application of quaternary ammonium salt-N-halamine nano antibacterial fibers

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Effect test

Embodiment 1

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

[0048] A: Soak the mixed fibers of tree cotton fiber and cotton fiber in the ethylenediamine solution with a mass fraction of 70% at a bath ratio of 1:55, heat the water bath to 35°C, and wash the tree with ethanol and purified water alternately after heating for 3 hours Cotton fiber 2 times, add epichlorohydrin to the cotton fiber at a bath ratio of 1:3, and add a 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 fibers;

[0049] B: Mix the epoxy fiber in step A with the polyamino polymer solution with a volume fraction of 8% at 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 p...

Embodiment 2

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

[0063] A: Soak the cotton fiber in the ethylenediamine solution with a mass fraction of 72% at a bath ratio of 1:57, heat it in a water bath to 37°C, and wash the cotton fiber three times alternately with ethanol and purified water after heating for 3.3 hours. Add epichlorohydrin to the 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°C for 8.4h, and then Wash it with purified water, put it into an oven and dry it at 57°C to obtain activated epoxy cotton fiber;

[0064] B: Mix the epoxy cotton fiber in step A with the polyamino polymer solution with a volume fraction of 8.6% at a bath ratio of 1:48, heat to 68°C, stir for 3.8 hours, and then use ethanol and purified water alternately washing the reaction p...

Embodiment 3

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

[0078]A: Soak the hemp fiber in a ethylenediamine solution with a mass fraction of 73% at a bath ratio of 1:60, heat it in a water bath to 38°C, and wash the hemp fiber twice with ethanol and purified water alternately after heating for 3.7 hours. Add epichlorohydrin to the fiber at a bath ratio of 1:3.7, and add 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 8.8 hours, and then use purified water Clean, put into oven and dry at 59 ℃, obtain the activated epoxy hemp fiber;

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

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Abstract

The invention discloses a preparation method and application of quaternary ammonium salt-N-halamine nano antibacterial fibers. The preparation method includes: performing activation preprocessing on natural fibers, allowing the activated natural fibers to have grafting reaction with a multi-amino polymer compound or a multi-amino multi-sulfydryl polymer compound, then grafting with quaternary ammonium salt, using a crosslinking agent to perform crosslinking, and bleaching to obtain the quaternary ammonium salt-N-halamine nano antibacterial fibers. The prepared quaternary ammonium salt-N-halamine nano antibacterial fibers have contact type and release type bifunctional antibacterial functions and are capable of increasing sterilizing speed, capable of achieving sterilizing under normal temperature, high in sterilizing performance, lasting in effect, less prone to tolerance generation, widely applicable to many fields such food packages, food fresh-keeping, medical equipment, public sanitation and water purification systems and promising in application prospect.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a preparation method and application of a quaternary ammonium salt-N-halamine type nanometer 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 prolong the shelf life of food-such as steam sterilization, dry heat sterilization, boiling sterilization, pasteurization and other sterilization methods often lead to food quality deterioration, including nutrient loss, texture change, color change, taste change, smell change, etc. In order to avoid the damage of heat-sensitive nutrients caused by heating, keep the color, aroma and taste of the items as much as possible. In recent years, cold sterilization technology has been widely studied and is expected to be applied to food sterilization, mainly including irradiati...

Claims

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Application Information

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Patent Type & Authority Applications(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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