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Method for preparing nanometal particle/metal organic frame composite antibacterial cellulose fibers

A technology of metal-organic frameworks and nano-metal particles, which is applied in fiber treatment, plant fiber, biochemical fiber treatment, etc., can solve the problems of weak mutual bonding and easy shedding, and achieve antibacterial performance, high efficiency and long-lasting antibacterial performance, long-lasting The effect of antimicrobial properties

Active Publication Date: 2018-09-28
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, nano-metal antibacterial agents and cellulose fibers are usually combined through electrostatic interaction, and their mutual binding is weak and easy to fall off.

Method used

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  • Method for preparing nanometal particle/metal organic frame composite antibacterial cellulose fibers
  • Method for preparing nanometal particle/metal organic frame composite antibacterial cellulose fibers
  • Method for preparing nanometal particle/metal organic frame composite antibacterial cellulose fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] see figure 1 , the fiber in this experiment is full-bleached bamboo pulp.

[0036] The method for composite antibacterial cellulose fiber of nanometer metal particles / metal organic framework comprises the following steps:

[0037] First, the whole bleached bamboo pulp is beaten, and when the slurry concentration reaches 1%, add 30wt% sodium chloroacetate, stir for 10min, and then place it in a water bath at 30°C for 6h; then add 10wt% sodium hydroxide solution, and Mix and stir for 10 minutes; place the treated carboxymethylated cellulose fibers for 18 hours, and finally wash them with absolute ethanol at room temperature until the fibers are neutral to obtain carboxymethylcellulose;

[0038] Then, the carboxymethylated cellulose fibers prepared above were alternately soaked in 1nM copper nitrate aqueous solution and 1nM trimesic acid ethanol solution for 10 minutes each, and this was repeated alternately for 1 time, and HKUST was loaded on the fiber substrate. -1, th...

Embodiment 2

[0041] The fiber used in this experiment was fully bleached bamboo pulp.

[0042] The method for composite antibacterial cellulose fiber of nanometer metal particles / metal organic framework comprises the following steps:

[0043] First, the whole bleached bamboo pulp was beaten, and when the pulp concentration reached 2%, 40wt% sodium chloroacetate was added, stirred for 15min, and then placed in a water bath at 40°C for 5h; then 20wt% sodium hydroxide solution was added, Mix and stir for 15 minutes; place the treated carboxymethylated cellulose fiber for 18 hours, and finally wash it with absolute ethanol at room temperature until the fiber is neutral to obtain carboxymethylcellulose;

[0044] Then, the carboxymethylated cellulose fibers prepared above were soaked in the acetic acid solution of 10nM copper acetate and the ethanol solution of 10nM trimesic acid in alternating circulation respectively for 15min, so repeated alternately dipping 4 times, and loaded on the fiber sub...

Embodiment 3

[0047] The fiber in this experiment was cotton dissolving pulp.

[0048] The method for composite antibacterial cellulose fiber of nanometer metal particles / metal organic framework comprises the following steps:

[0049] First, the cotton dissolving pulp was beaten, and when the pulp concentration reached 3%, 50wt% sodium chloroacetate was added, stirred for 20min, and then placed in a water bath at 40°C for 5h; then 20wt% sodium hydroxide solution was added, and Mix and stir for 20min. Place the treated carboxymethylated cellulose fibers for 20 hours, and finally wash them with absolute ethanol at room temperature until the fibers are neutral to obtain carboxymethylcellulose;

[0050] Then, the carboxymethylated cellulose fibers prepared above were alternately soaked in the ethanol solution of 20nM copper nitrate and the DMF solution of 20nM trimesic acid for 20min respectively, and repeated alternately dipping 6 times in this way, and loaded on the fiber substrate HKUST-1,...

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Abstract

A method for preparing nanometal particle / metal organic frame composite antibacterial cellulose fibers comprises the following steps: carboxymethylating fibers, introducing more carboxyl anion groups,stirring and blending a metal salt solution and the obtained fibers, adding an organic ligand solution, circularly preparing metal organic framework@cellulose fibers, adding a certain concentration of a silver nitrate or zinc nitrate solution, performing uniform stirring, and carrying out microwave-assisted reduction to obtain the novel nanometal particle@metal organic frame composite antibacterial fibers. The large specific surface area and the high surface charge of the metal organic framework@cellulose fiber composite material are fully used to solve the problem of easy agglomeration ofnanometal particles, so the method has the advantages of simplicity in operation, convenience, low cost, and controllable particle size of the metal nanoparticles, the nanometal particle / metal organicframe composite antibacterial cellulose fibers have a good structural stability and an efficient and long-lasting antibacterial property, and the antibacterial rates against Staphylococcus aureus andEscherichia coli respectively are 99% or above.

Description

technical field [0001] The invention belongs to the technical field of antibacterial fiber composite functional materials, and in particular relates to a method for compounding antibacterial cellulose fibers of nanometer metal particles / metal organic frameworks. Background technique [0002] As a renewable natural polymer material, cellulose has the advantages of biodegradability and low price, and the molecular chain of cellulose contains a large number of hydroxyl groups, which can be easily derivatized and modified, and can be combined with many small molecular compounds or metal particles. It is a good carrier of antibacterial agents due to the interaction. [0003] Nano-metal antibacterial agents, especially nano-silver and nano-zinc (Silver nano-particles, Ag NPs, ZnNPs) series antibacterial agents, have gradually become a research hotspot of antibacterial materials. It has more extensive and excellent antibacterial and bactericidal functions, and through the slow-rel...

Claims

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Application Information

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IPC IPC(8): D06M11/65D06M13/188D06M13/192D06M101/08
CPCD06M11/65D06M13/188D06M13/192D06M16/00D06M2101/08
Inventor 段超蒙景茹徐永建刘超然孟欣卢万里
Owner SHAANXI UNIV OF SCI & TECH
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