Cellulose fiber-supported nano silver antibacterial material and preparation method thereof

A cellulose fiber, nano-silver antibacterial technology, applied in the direction of chemical post-treatment of artificial filaments and cellulose/protein artificial filaments in cellulose solution, can solve the problems of synthetic preparation process pollution, poor washing resistance, etc. The effect of great application value, improved security, and rich sources

Inactive Publication Date: 2012-11-14
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a preparation method of cellulose fiber-loaded nano-silver antibacterial materi

Method used

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  • Cellulose fiber-supported nano silver antibacterial material and preparation method thereof
  • Cellulose fiber-supported nano silver antibacterial material and preparation method thereof
  • Cellulose fiber-supported nano silver antibacterial material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0048] (1) Under the temperature condition of 20 ℃ of water baths, 1.0g 60 mesh jute fiber powders are soaked in the stirred tank that fills 50g mass fraction and are 15% sodium hydroxide solution, stir 120min with the stirring speed of 300rpm, then use vacuum pump Suction filtration, washing the jute fiber powder of gained to neutrality, carry out drying in vacuum oven, vacuum tightness is 0.1MPa, and drying temperature is 60 ℃, and drying time is 12h, obtains the jute fiber powder of alkali treatment;

[0049] (2) Under the temperature condition of 4 ℃ of water baths, take by weighing the alkali-treated jute fiber powder that 1g the first step gains and join in the stirred tank that 50g contains TEMPO 0.001g, NaClO 15g and NaBr 0.01g aqueous solution, stirring speed is 500rpm , drop 1% sodium hydroxide to adjust the pH value of the system at 10.5, use a pH meter to monitor in real time, when the pH value is constant and no longer consume sodium hydroxide, add 5ml of absolute ...

Embodiment 2

[0055] (1) Under the temperature condition of 80 ℃ of water baths, 20g60 purpose flax fiber powders are soaked in the mass fraction that fills 200g and be 20% sodium hydroxide solution stirring tank, stir 100min with the stirring speed of 300rpm, then use vacuum pump suction filtration, The flax fiber powder obtained was washed to neutrality, and dried in a vacuum oven with a vacuum degree of 0.1 MPa, a drying temperature of 80° C., and a drying time of 6 hours to obtain alkali-treated flax fiber powder;

[0056] (2) under the temperature condition of 20 DEG C, the flax fiber powder of the pretreatment that takes 1g second step gains joins in the stirring kettle that fills 99g and contains the aqueous solution of TEMPO 0.001g, NaClO 10g and NaBr0.01g, and stirring speed is 500rpm, add dropwise 1% sodium hydroxide solution to adjust the pH value of the reaction system to 11, use a pH meter to monitor in real time, and when the pH value is constant and no longer consume sodium hy...

Embodiment 3

[0062] (1) under 60 ℃ of water-bath temperature conditions, 1g60 purpose jute fiber powder is soaked in the mass fraction that fills 40g and is in the stirred tank of 16% sodium hydroxide solution, stirs 300min with the stirring speed of 200rpm, then uses vacuum pump suction filtration, The jute fiber powder of gained is washed to neutrality, is dried in vacuum oven, and vacuum degree is 0.1MPa, and drying temperature is 70 ℃, and drying time is 12h, obtains the jute fiber powder of alkali treatment;

[0063] (2) under the temperature condition of 60 ℃ of water baths, the jute fiber powder of the pretreatment that takes 1.0g the second step gains joins into 99g and contains TEMPO 0.002g, NaClO 2 1.2g and 12g of NaClO in a stirred tank with a stirring speed of 500rpm, add 1% glacial acetic acid solution dropwise to adjust the pH of the reaction system to 4.8, use a pH meter to monitor in real time, and when the pH value is constant and no longer consume glacial acetic acid, add ...

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Abstract

The invention discloses a cellulose fiber-supported nano silver antibacterial material and a preparation method thereof. The preparation method comprises the steps of: conducting chemical pretreatment on cellulose fibers, then conducting TEMPO (2, 2, 6, 6-tetramethylpiperidine-1-oxyl) selective oxidization on the cellulose fibers, and finally on the premise that not any reducing agent is added, enabling the oxidized cellulose fibers to react with silver nitrate in silver nitrate water solution through a short-time microwave heating method to prepare the cellulose fiber-supported nano silver antibacterial material with small-diameter and even-structure nano silver particles. By adopting the preparation method, on the premise that not any reducing agent is added, in-situ reduction and growth of nano silver on carboxylated cellulose fiber supporters are realized. The prepared cellulose fiber-supported nano silver antibacterial material has the advantages of small nano grain size and even size, and can be widely applied to the fields of antibacterial operation clothes, wound dressing, drug controlled release, textile coating and the like.

Description

technical field [0001] The invention relates to a cellulose fiber-loaded nano-silver antibacterial material and a preparation method thereof, belonging to the technical field of nano-functional materials. Background technique [0002] Nano-silver refers to metal silver particles with a diameter between 1 and 100nm. Widespread concern. Since ancient times, nano-silver has been widely used in the field of biomedicine. The excellent performance of nano-silver materials depends on its unique microstructure. Nano-silver particles have significant surface effects, quantum size effects and macroscopic quantum tunneling effects, thus showing biological, thermal, optical, electrical, magnetic, Catalytic and sensitive properties enable it to be used in the fields of biomedicine, optics, electronics, optoelectronic materials, catalysts, and magnetic materials. Patent CN1348032 discloses a nano-silver antibacterial yarn and a manufacturing method thereof. Since the method used is to ...

Claims

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Application Information

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IPC IPC(8): D01F2/02D01F11/02D01F1/10
Inventor 丁彬曹新旺任韬俞建勇
Owner DONGHUA UNIV
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