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Antibacterial type nanofiber composite material and preparation method thereof

A nanofiber and composite material technology, applied in the field of antibacterial nanofiber composite material and its preparation, can solve the problems of low filtration efficiency, particle filtration and antibacterial can not be taken into account at the same time, large filtration resistance, etc., to achieve simple preparation method and low cost , the effect of low filter resistance

Active Publication Date: 2016-05-04
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the fiber filter material prepared by the existing nanofiber preparation method may have the problems of low filtration efficiency and high filtration resistance, or the problem that particle filtration and antibacterial cannot be taken into account at the same time.

Method used

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  • Antibacterial type nanofiber composite material and preparation method thereof
  • Antibacterial type nanofiber composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A certain mass of TiO 2 The nanoparticles were added to a mixed solvent of dichloromethane (DCM) and N,N-dimethylacetamide (DMAC) with a mass ratio of 10:1, ultrasonically oscillated for 90 minutes, and then a certain mass of PLA polymer was added. , at room temperature after magnetic stirring for 24h, and finally ultrasonic vibration treatment for 60 minutes. The mass fraction of PLA is 7%, TiO 2 A homogeneous solution with a mass fraction of nanoparticles of 1.75%.

[0027] will contain TiO 2 The homogeneous solution of nanoparticles was injected into 5 needle cylinders placed on one side of the receiving drum, the spinning voltage was 23kV, the spinning solution flow rate was 1ml / h, the spinning distance was 12cm, and the ambient relative humidity (RH) was 45% Electrospinning was carried out under the conditions.

[0028] Electrospinning was performed for 1 h under the above process conditions, and the TiO in the porous hybrid fiber membrane was measured. 2 The ...

Embodiment 2

[0030] A certain mass of TiO 2 The nanoparticles were added to a mixed solvent of dichloromethane (DCM) and N,N-dimethylacetamide (DMAC) with a mass ratio of 10:1, ultrasonically oscillated for 90 minutes, and then a certain mass of PLA polymer was added. , at room temperature through magnetic stirring for 24h, and finally ultrasonic vibration treatment for 60 minutes. The mass fraction of PLA is 7%, TiO 2 A homogeneous solution with a mass fraction of nanoparticles of 1.75%.

[0031] will contain TiO 2 The homogeneous solution of nanoparticles was injected into 5 needle cylinders placed on one side of the receiving drum, and the spinning voltage was 23kV, the flow rate of the spinning solution was 1ml / h, the spinning distance was 12cm, and the ambient relative humidity (RH) was 60. % conditions for electrospinning.

[0032] Electrospinning was performed for 1 h under the above process conditions, and the TiO in the porous hybrid fiber membrane was measured. 2The mass per...

Embodiment 3

[0034] A certain mass of TiO 2 The nanoparticles were added to a mixed solvent of dichloromethane (DCM) and N,N-dimethylacetamide (DMAC) with a mass ratio of 10:1, ultrasonically oscillated for 90 minutes, and then a certain mass of PLA polymer was added. , stirred by a magnetic stirrer for 24h at room temperature, and finally treated with ultrasonic vibration for 60 minutes. The mass fraction of PLA is 7%, TiO 2 A homogeneous solution with a mass fraction of nanoparticles of 1.75%.

[0035] will contain TiO 2 The homogeneous solution of nanoparticles was injected into 5 needle cylinders placed on one side of the receiving drum, and the spinning voltage was 23kV, the spinning solution flow rate was 1ml / h, the spinning distance was 12cm, and the ambient relative humidity (RH) was 15. % conditions for electrospinning.

[0036] Electrospinning was performed for 1 h under the above process conditions, and the TiO in the porous hybrid fiber membrane was measured. 2 The mass pe...

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Abstract

The invention discloses an antibacterial type nanofiber composite material and a preparation method thereof. A hybrid-structured PLA-TiO2 fiber film with nano pores formed in whole fiber bodies and nano protrusions arranged on the fiber surface is adopted as the antibacterial type nanofiber composite material; the antibacterial ratio of the composite material on staphylococcus aureus is 99% or above, the antibacterial ratio of the composite material on escherichia coli is 95% or above, the filtering efficiency of the composite material on sodium chloride aerosol particle air with the weight median diameter of 260 nm reaches up to 99.98% or above, and the filtering resistance is smaller than 150 Pa. The preparation method comprises the steps that TiO2 nanoparticles are added into a PLA solution, electrostatic spinning is performed, and the hybrid-structured PLA-TiO2 fibers with the nano pores formed in the whole fiber bodies and the nano protrusions evenly distributed on the fiber surface are prepared through a one-step method. The preparation method is simple and low in cost, and the prepared composite material not only has the higher antibacterial property, but also has the high filtering efficiency and the low filtering resistance and is a functional filtering and protecting material with the potential application prospect.

Description

technical field [0001] The invention relates to an air filter material and a preparation method thereof, in particular to an antibacterial nanofiber composite material and a preparation method thereof. Background technique [0002] As we all know, with the rapid development of heavy industry and transportation, the problem of air pollution, especially the problem of particulate matter pollution, has become increasingly prominent. For example, the haze weather we often see is caused by a large number of particulate pollutants suspended in the air. These particulate pollutants not only greatly reduce the visibility of the air, but also seriously affect people's health, especially fine particles (PM2.5) with a particle size smaller than 2.5 microns are more likely to enter the human body. Living and working in a high-concentration PM2.5 environment for a long time can cause respiratory function decline, bronchitis, asthma, congestive heart failure, coronary artery and other dis...

Claims

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Application Information

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IPC IPC(8): D04H1/435D01F1/10D01D5/00B01D39/14
CPCB01D39/14B01D2239/0442D01D5/003D01D5/0076D01D5/0092D01F1/10D04H1/435
Inventor 王哲潘志娟
Owner SUZHOU UNIV
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