Preparation method for composite antibacterial cellulose fiber filler of metal organic frame

A metal-organic framework and cellulose fiber technology, which is applied in the field of preparation of antibacterial fiber fillers, can solve the problems of little research on metal-organic framework composite antibacterial cellulose fibers, and achieve simple preparation methods, high accessibility, and strong antibacterial properties Effect

Active Publication Date: 2017-09-08
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In recent years, the research on this kind of novel antibacterial materials has attracted great research interest, but there is little research on metal-organic framework composite antibacterial cellulose fibers as fillers.

Method used

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  • Preparation method for composite antibacterial cellulose fiber filler of metal organic frame

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The fiber used in this experiment was fully bleached bamboo pulp.

[0030] A method for preparing a metal-organic framework composite antibacterial cellulose fiber filler, comprising the following steps:

[0031] Firstly, the whole bleached bamboo pulp is beaten, and when the pulp concentration reaches 2%, the temperature is controlled at 25°C, the pH value is 5, and the concentration is 0.03mol / L of CaCl 2 Add 20mg of CMC to the solution and react for 2h; make carboxymethyl cellulose;

[0032] Next, weigh 0.20g of AgNO 3 Add the above carboxymethyl cellulose, and add 10mL of deionized water, magnetically stir for 30min, then add 0.1g of 3,5-pyridinedicarboxylic acid to mix with it, and adjust the pH value of the system to 6 with NaOH, pour the mixture Put it into a polytetrafluoroethylene high-pressure reaction kettle with a volume of 25mL, seal it, put it into an electric heating constant temperature drying box at 100°C and heat it, react for 24 hours, place the rea...

Embodiment 2

[0036] The fiber used in this experiment was fully bleached bamboo pulp.

[0037] Firstly, the whole bleached bamboo pulp is beaten, and when the pulp concentration reaches 2%, the temperature is controlled at 75°C, the pH value is 6, and the CaCl concentration is 0.04mol / L. 2 Add 30 mg of CMC to the solution and react for 8 hours; make carboxymethyl cellulose;

[0038] Next, weigh 0.20 g of CuNO 3 Add the above carboxymethyl cellulose, and add 10mL deionized water, 3ml ethanol, 3ml acetic acid, magnetically stir for 15min, then add 0.1g trimesic acid to mix with it, and adjust the pH value of the system to 5 with NaOH, and Pour the mixture into a polytetrafluoroethylene high-pressure reactor with a volume of 25mL, seal it, heat it in a 60°C electric constant temperature drying oven, and react for 10 hours. Place the reactor under cooling water and quickly cool it to room temperature, and centrifuge the product After separation, washing with deionized water and absolute etha...

Embodiment 3

[0042] The fiber in this experiment was cotton dissolving pulp.

[0043] First, the cotton dissolving pulp is beaten, and when the pulp concentration reaches 4%, the temperature is controlled at 120°C, the pH value is 7, and the concentration is 0.05mol / L CaCl 2 Add 60 mg of CMC to the solution and react for 12 hours to obtain carboxymethyl cellulose;

[0044] Then weigh 1.0 g of Cu(OAc) 2 H2O and add it to the carboxymethyl cellulose, and add 12 mL of deionized water, 4 ethanol, 4 ml of acetic acid, magnetically stir for 15 min, and then add 0.50 g of trimesic acid to mix with it , and use KOH to adjust the pH value of the system to 4, pour the mixture into a polytetrafluoroethylene high-pressure reactor with a volume of 50mL, seal it, put it into a 40°C electric constant temperature drying oven to heat, and react for 4 hours. Cool quickly to room temperature under cooling water. The product was centrifuged, washed three times with deionized water and absolute ethanol, and ...

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Abstract

The invention relates to a preparation method for composite antibacterial cellulose fiber filler of a metal organic frame. The method comprises the following steps: firstly, enabling fiber to be subjected to carboxymethylation to introduce more carboxyl anion groups, secondly, stirring and blending a metal salt solution and the fiber, then adding organic ligands to perform in-situ preparation of composite antibacterial cellulose fiber of the metal organic frame, utilizing the composite fiber, and taking the composite fiber as filler to form intermolecular hydrogen bonding with natural plant fiber to prepare paper for daily use, medical dressings, product packages and textiles which are rich in an antimicrobial property. The preparation method is simple and high in accessibility; the problem about bonding between the metal organic frame as filler and the fiber is fully solved; the prepared novel antibacterial cellulose fiber has excellent structural stability and an efficient and durable antibacterial property; and the antibacterial rate specific to staphylococcus aureus and escherichia coli can be 99% or more; and the preparation method can be widely applied to the relevant fields of medical apparatus and instruments, the medical dressings, the product packages and textiles and the like.

Description

technical field [0001] The invention belongs to the technical field of preparation of antibacterial fiber fillers, and in particular relates to a preparation method of metal-organic framework composite antibacterial cellulose fiber fillers. Background technique [0002] With the improvement of living standards, people's awareness and requirements for the living environment are constantly improving, especially the awareness of health is also increasing. Because harmful bacteria are widely distributed in nature, and there are many types and large quantities, they seriously threaten human beings. health; diseases caused by bacterial transmission and infection have constituted a major social problem and have attracted widespread attention. Therefore, the research and development of antibacterial materials has gradually become a research hotspot. Antibacterial materials can be made by adding a small amount of antibacterial agents to other common materials, such as antibacterial p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F1/10C08G83/00C08B11/12D01F2/00
CPCC08B11/12C08G83/008D01F1/103D01F2/00
Inventor 段超蒙景茹徐永建孟欣
Owner SHAANXI UNIV OF SCI & TECH
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