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A kind of preparation method of antibacterial functional cellulose fiber

A cellulose fiber and functional technology, applied in the field of antibacterial fiber preparation, can solve the problems of carcinogenic products, low immobilization efficiency, low utilization rate, etc., achieve high utilization, improve immobilization efficiency, and improve reactivity Effect

Active Publication Date: 2015-09-02
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although these methods can make the fiber with good antibacterial effect, there are still limitations in the following aspects: the epichlorohydrin process is simple, but its own utilization rate is low, and epichlorohydrin is also under alkaline conditions. A hydrolysis reaction will occur, and a large number of carcinogenic products will be produced, which must be separated and removed by certain technologies; in the monochloro-s-triazine method, mono-chloro-s-triazine itself is easy to absorb moisture, so its activity is reduced, and the price is high
Qian Liangliang et al. (Food and Fermentation Industry, 2008, 34(2):16-20) used polyacrylic acid as a cross-linking agent to immobilize β-cyclodextrin on cellulose, and then use the cellulose to degrade volatile food The antibacterial agent cinnamaldehyde was embedded to obtain antibacterial cellulose, but the immobilization efficiency was low

Method used

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  • A kind of preparation method of antibacterial functional cellulose fiber
  • A kind of preparation method of antibacterial functional cellulose fiber
  • A kind of preparation method of antibacterial functional cellulose fiber

Examples

Experimental program
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Effect test

Embodiment 1

[0027] Put the cellulose fiber into 1.5mol / L sodium hydroxide solution to swell for 1 hour, the weight ratio of cellulose fiber to sodium hydroxide solution is 1:20; wash with distilled water until neutral, set aside; weigh 5g of β-cyclopaste Ethyl alcohol, 5 g of citric acid, and 0.5 g of sodium hypophosphite were respectively added to 50 ml of deionized water, stirred at 50°C for 15 min to completely dissolve, and a reaction solution was obtained. Soak 2g of swollen cellulose fiber into the reaction solution, after swelling for 15 minutes, put it in an ultrasonic cleaner for 55 minutes, and the frequency is 80KHz, and then put it into a blast drying oven at 150°C for curing reaction for 15 minutes. Afterwards, the fibers were washed three times with hot water at 50°C to obtain fibers grafted with β-cyclodextrin. Add 1g of the above fibers to 50ml of ciprofloxacin hydrochloride solution with a concentration of 2g / l, shake and adsorb in a constant temperature shaker at 200rpm ...

Embodiment 2

[0032] Put the cellulose fiber into 2mol / L sodium hydroxide solution to swell for 2 hours, the weight ratio of cellulose fiber to sodium hydroxide solution is 1:30; wash with distilled water until neutral, set aside; weigh 5g of β-cyclodextrin , 6g of citric acid and 0.75g of sodium dihydrogen phosphate were added to 50ml of deionized water, stirred at 60°C for 20min to dissolve completely, and a reaction solution was obtained. Soak 3g of swollen cellulose fiber into the reaction solution, after swelling for 20min, then put it into an ultrasonic cleaner for 30min, the frequency is 20KHz, and then put it into a blast drying oven at 160°C for curing reaction for 20min, Afterwards, wash the fiber with hot water at 60°C for 3 times to obtain the fiber grafted with β-cyclodextrin; put 2 g of the above fiber into 50 ml of ciprofloxacin hydrochloride solution with a concentration of 4 g / l, at room temperature at 200 rpm Vibrated and adsorbed in a constant temperature shaker for 6 hou...

Embodiment 3

[0036] Put the cellulose fiber into 3mol / L sodium hydroxide solution to swell for 3 hours, the weight ratio of cellulose fiber to sodium hydroxide solution is 1:40; wash with distilled water until neutral, set aside; weigh 5g of β-cyclodextrin , 5g of citric acid and 1g of disodium hydrogen phosphate were added to 50ml of deionized water, and stirred at 70°C for 30min to completely dissolve them to obtain a reaction solution. Soak 4g of swollen cellulose fiber into the reaction solution, after swelling for 30 minutes, put it into an ultrasonic cleaner for 50 minutes, and the frequency is 45KHz, and then put it into a 170°C blast drying oven for curing reaction for 30 minutes. Afterwards, wash the fiber with hot water at 70°C for 3 times to obtain the fiber grafted with β-cyclodextrin; put 1 g of the above fiber into 50 ml of triclosan solution with a concentration of 6 g / l, and set the temperature at room temperature at 200 rpm Shake and adsorb in a constant temperature shaker...

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Abstract

The invention discloses a method for preparing antibacterial functional cellulosic fibers. The method comprises the steps of using a cross-linking agent for enabling cyclodextrin to be arranged on the cellulosic fibers in a stem grafting mode through a chemical reaction, then utilizing the cyclodextrin on the fibers to conduct clathration on antibacterial agents, and in the preparing process, conducting ultrasound pretreatment on a reaction system comprising the cyclodextrin, the cross-linking agent, a catalyst and the cellulosic fibers. According to the method, the defect that in the prior art, the solid loading efficiency of the cyclodextrin is low, the preparation time is short, the efficiency is high, the antibacterial and anti-infection functional cellulosic fibers with the slow-release performance and paper products of the cellulosic fibers can be manufactured, and the functional cellulosic fibers have good market prospects.

Description

technical field [0001] The invention relates to a preparation method of an antibacterial fiber, in particular to a preparation method of an antibacterial functional cellulose fiber. Background technique [0002] In life, people inevitably come into contact with various bacteria, fungi and other microorganisms. These microorganisms spread diseases through contact under suitable external conditions, thus affecting people's health and normal work, study and life. Life. Therefore, with the development of science and technology and the improvement of people's living standards, more and more attention has been paid to the research, development and production of antibacterial fibers. [0003] Antibacterial fibers are made by introducing substances capable of inhibiting bacterial growth into the surface and interior of fibers by physical or chemical methods. The physical methods mainly include blend spinning method, composite spinning method and finishing method. The chemical met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/38D06M15/03D06M13/207D06M13/192D06M13/355D06M13/165D06M13/224D06M101/06
Inventor 钱丽颖董超瞿冰肖惠宁何北海
Owner SOUTH CHINA UNIV OF TECH
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