Preparation method of antibacterial metal organic framework composite nanofiber

A technology of composite nanofibers and metal organic frameworks, which is applied in the fields of alkali metal compounds, fiber treatment, chemical instruments and methods, etc., to achieve the effects of low cost, high efficiency and long-lasting antibacterial performance, and good structural stability

Inactive Publication Date: 2016-08-17
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few reports on the preparation of metal-o...

Method used

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  • Preparation method of antibacterial metal organic framework composite nanofiber

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Embodiment 1

[0020] Weigh 0.50g of AgNO 3 , 0.25 g of trimesic acid and 0.26 g of imidazole were mixed with 10 mL of deionized water, the pH value of the system was adjusted to 6.5 with sodium hydroxide, and magnetically stirred for 30 min. Pour the mixture into a polytetrafluoroethylene high-pressure reactor with a volume of 15 mL, seal it, heat it in a 120°C electric constant temperature drying oven, react for 4 hours, and place the reactor under cooling water to quickly cool to room temperature. The product was centrifuged, washed three times with high-purity water and absolute ethanol, and dried in vacuum at 60°C to obtain silver metal-organic framework particles. Weigh 0.50g of polyvinylpyrrolidone, add 20mL of dichloromethane, seal it, and disperse it completely under the action of ultrasonic waves, then add 0.25g of synthesized silver metal-organic framework nanoparticles, and continue to stir until the particles are completely dispersed to obtain a mixed solution Ⅰ . Take 2.00 g ...

Embodiment 2

[0023] Weigh 1.00g of AgNO 3 1.20 g of trimesic acid and 0.50 g of imidazole were mixed with 25 mL of water / ethylene glycol mixed solvent (volume ratio 1:0.5), the pH value of the system was adjusted to 6.5 with methylamine, and magnetically stirred for 30 min. Pour the mixture into a polytetrafluoroethylene high-pressure reactor with a volume of 50 mL, seal it, heat it in a 140°C electric constant temperature drying oven, react for 10 hours, and place the reactor under cooling water to quickly cool to room temperature. The product was centrifuged, washed three times with high-purity water and absolute ethanol, and dried in vacuum at 60°C to obtain silver metal-organic framework particles. Weigh 0.50g of polyoxyethylene lauryl ether, add 20mL of dichloromethane, seal it, and disperse it completely under the action of ultrasonic waves, then add 0.50g of synthesized silver metal-organic framework nanoparticles, and continue stirring until the particles are completely dispersed. ...

Embodiment 3

[0026] Weigh 2.00g of AgNO 3, 1.50 g of trimesic acid and 0.60 g of imidazole are mixed with 50 mL of water and N,N-dimethylformamide mixed solvent (volume ratio 1:1), and the pH value of the system is adjusted to 7 with triethylamine, Stir magnetically for 30 min. Pour the mixture into a polytetrafluoroethylene autoclave with a volume of 100 mL, seal it, heat it in a 140°C electric constant temperature drying oven, react for 24 hours, and place the autoclave under cooling water to quickly cool to room temperature. The product was centrifuged, washed three times with high-purity water and absolute ethanol, and dried in vacuum at 60°C to obtain silver metal-organic framework particles. Weigh 0.50g of polyvinylpyrrolidone, add 15mL of dichloromethane, seal it, and disperse it completely under the action of ultrasonic waves, then add 1.00g of synthesized silver metal-organic framework nanoparticles, and continue stirring until the particles are completely dispersed to obtain a m...

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Abstract

The invention relates to a preparation method of an antibacterial metal organic framework composite nanofiber, and belongs to the technical field of antibacterial functional materials. The preparation method comprises the steps that silver metal organic framework nanoparticles are subjected to particle surface modifying through an auxiliary and then blended with a macromoleclar polymer in a solvent to obtain a raw material solution, and then the composite nanofiber is prepared through an electrostatic spinning technique. The composite nanofiber prepared through the method is good in stability and can effectively control the metal ion releasing concentration and speed and achieve the long-acting durable antibacterial effect, and the antibacterial rates of the composite nanofiber prepared through the method on staphylococcus aureus and escherichia coli both reach 99% or above. Accordingly, not only is the simple and convenient method for preparing the antibacterial metal organic framework composite nanofiber provided, but also the composite nanofiber prepared through the method can be applied to the related fields such as medical instruments, medical dressings, product packaging and textiles and has the good application prospect.

Description

technical field [0001] The invention belongs to the technical field of antibacterial functional materials, and in particular relates to a preparation method of metal-organic framework composite nanofibers with antibacterial function. Background technique [0002] With the extensive use of antibiotics, the resistance of pathogenic microorganisms has become an important public health problem, and the development of new antibacterial materials has become a current research hotspot. Many metal and metal oxide nanomaterials have been proven to have good antibacterial efficacy, and their antibacterial mechanism is different from traditional antibiotics. Therefore, the widespread use of these antibacterial materials is considered to be an important method to effectively solve microbial resistance. Among many antibacterial materials, metal-organic frameworks (Metal-Organic Frameworks, MOFs) materials can fix metal ions in a three-dimensional framework structure through chemical bond...

Claims

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Application Information

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IPC IPC(8): B01J20/30B01J20/26B01J20/28D01D5/00
CPCB01J20/226B01J20/261B01J20/28007B01J20/28023B01J2220/46B01J2220/4806B01J2220/4812D01D5/003
Inventor 叶俊伟宁桂玲孙圆张思琦杨瑶瑶林源
Owner DALIAN UNIV OF TECH
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