Preparation method of broad spectrum biological disinfection air filtering material

An air filter material, bactericidal technology, applied in the field of air purification, to achieve the effect of stable properties, processing adaptability, and low dosage

Inactive Publication Date: 2012-05-30
SANITARY EQUIP INST ACAD OF MILITARY MEDICAL SCI PLA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, while it reduces the number of particles in the indoor air, it also brings new problems, that is, the traditional filter itself may become a breeding place for bacteria, mold, fungus and other microorganisms
The constantly multiplying germs may develop to spread all over the filter, and then destroy the structure of the filter, and the metabolites such as toxins and corpse fragments produced by it may diffuse in the indoor air through the filter, thereby seriously affecting people's health, and even cause cross infection

Method used

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  • Preparation method of broad spectrum biological disinfection air filtering material
  • Preparation method of broad spectrum biological disinfection air filtering material
  • Preparation method of broad spectrum biological disinfection air filtering material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of biocidal air filter material

[0026] Immerse the glass fiber filter paper in 10% γ-aminopropyltriethoxysilane toluene solution at room temperature for 10 hours, wash it with toluene, and air-dry it at room temperature; Aldehyde groups are introduced into the surface of the filter material, and the aldehyde groups condense with the amino groups of the polypeptide antibacterial agents in Table 1 to form Schiff's bases to make bactericidal air filter materials.

[0027] Bactericidal experiment

[0028] Selection of bacterial strains: Staphylococcus aureus (ATCC 6538) as a representative of Gram-positive bacteria; Escherichia coli (8099) as a representative of Gram-negative bacteria; Bacillus subtilis (ATCC 9372) as a representative of bacterial spores; Penicillium penicillium (ATCC 10509) as a representative of fungi; Escherichia coli f2 phage as a representative of viruses.

[0029] For the evaluation of the effect of killing bacteria and viruses, refer ...

Embodiment 2

[0039] 0.5% polylysine, 0.25% protamine sulfate (dissolved in the buffer solution of pH9~10 according to weight-to-volume ratio) are jointly immobilized on the filter paper that has been aldehydelated, and are measured according to the bactericidal experiment among the embodiment 1 to bacteria and virus killing rate, the results are as follows:

[0040] When two kinds of antibacterial agents are combined in table 2, they are effective in killing bacteria and viruses

[0041]

[0042] Note: ① The concentration of bacteria solution eluted on the control sample is: Escherichia coli 1.38×10 4 cfu / mL, Staphylococcus aureus 1.62×10 4 cfu / mL, Bacillus subtilis 1.27×10 4 cfu / mL, f 2 Phage 1.0×10 3 pfu / mL.

[0043] ②The following are the abbreviations of the abbreviations: L stands for polylysine (0.5%), and Y stands for protamine sulfate (0.25%).

[0044] 0.5% polylysine, 0.25% protamine sulfate, and 0.1% natamycin were jointly immobilized on the aldylated filter paper, and t...

Embodiment 3

[0046] 0.5% polylysine, 0.5% nisin (dissolved in the buffer solution of pH9~10 according to weight to volume ratio) are jointly immobilized on the filter paper that has been aldehydeylated, measure according to the bactericidal experiment among the embodiment 1 to bacteria and virus killing rate, the results are as follows:

[0047] When two kinds of antibacterial agents are combined in table 3, they are effective in killing bacteria and viruses

[0048]

[0049] Note: ① The concentration of bacteria solution eluted on the control sample is: Escherichia coli 1.38×10 4 cfu / mL, Staphylococcus aureus 1.62×10 4 cfu / mL, Bacillus subtilis 1.27×10 4 cfu / mL, f 2 Phage 1.0×10 3 pfu / mL.

[0050] ②The following are the abbreviations of the abbreviations: L stands for polylysine (0.5%), and R stands for nisin (0.5%).

[0051] 0.5% polylysine, 0.5% nisin, and 0.1% natamycin were immobilized on the aldylated filter paper, and the growth of mold visible to the naked eye appeared on ...

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Abstract

The invention discloses a broad-spectrum biological bactericidal air filtration material and a preparation method thereof. The invention is not only applicable to the general families and business departments with the need of air purification, but is also applicable to the semiconductor, pharmaceutical, hospitals and other environments with higher requirements of cleanliness. The broad-spectrum biological bactericidal air filtration material of the invention comprises at least one biological anti-bacterial agent and glass fiber filter paper, and the biological anti-bacterial agent is lysozyme, protamine sulfate, poly-lysine, nisin, polymyxin sulfate, glycine or natamycin. The preparation method of the invention is that the air filtration material is prepared by silanization, hydroformylation, condensation reaction and removal of the physically absorbed anti-bacterial agent. The biological bactericidal air filtration material prepared by the invention has low consumption of the anti-bacterial agent and no influence on the resistance of the filtration material; the sterilization rate is high, most of the killing rate of bacterial, spores and viruses is more than 99 percent, and the fungal growth is inhibited.

Description

technical field [0001] The invention relates to the field of air purification, and more specifically relates to a preparation method of a broad-spectrum biocidal air filter material. Background technique [0002] Since the filter came out, the biggest function given to it by the manufacturer is to improve the indoor air quality. But while it reduces the number of particles in the indoor air, it also brings new problems, that is, the traditional filter itself may become a breeding ground for bacteria, mold, fungus and other microorganisms. The constantly multiplying germs may develop to spread all over the filter, and then destroy the structure of the filter, and the metabolites such as toxins and corpse fragments produced by it may diffuse in the indoor air through the filter, thereby seriously affecting people's health, and even cause cross infection. In order to reduce the harm, people apply antimicrobial agent on the filter. Because chemical antibacterial agents may h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61L9/00B01D39/20A61L101/32A61L101/36A61L101/50A61L101/52A61L101/46A61L101/54
Inventor 祁建城郝丽梅段惠丽陈建龙
Owner SANITARY EQUIP INST ACAD OF MILITARY MEDICAL SCI PLA
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