ELECTRET NON-WOVEN MATERIALS AS A METHOD OF PROTECTION FROM INHALATION EXPOSURE FACTORS
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
Kazan National Research Technological University
(Department of Polymer and Composite Materials Processing Technology, Associate Professor)
employee from 01.01.2013 until now
Kazan, Kazan, Russian Federation
employee from 01.01.2013 until now
Kazan, Kazan, Russian Federation
2.
Kazan National Research Technological University
(Department of Polymer and Composite Materials Processing Technology, Graduate student)
graduate student from 01.01.2019 to 01.01.1923
graduate student from 01.01.2019 to 01.01.1923
Type:
Article
Pages:
from 32
to 36
Status:
Published
Received:
25.12.2025
Accepted:
25.12.2025
Published:
25.12.2025
Language:
Russian
Keywords:
MELTBLOWN, SPUNBOND, ELECTRETS, BACTERIOSTATIC EFFECT, MICROORGANISMS, MEDICAL MASK, GRAM-POSITIVE BACTERIA
Abstract (English):
This study investigated the possibility of imparting bacteriostatic properties to nonwoven polypropylene materials used in the production of medical masks by creating an electret state. The objects of the study were nonwoven polypropylene fabrics manufactured by the Spunbond (density 20 g / m²) and Meltblown (density 25 g / m²) methods, which are most widely used in the medical industry. The antimicrobial effect of the electreted materials was assessed after their treatment with the corona discharge method, and their sensitivity to modified materials was determined by the disk diffusion method on the Mueller-Hinton agar nutrient medium. The study also involved control groups of untreated samples to ensure the reliability of the results. Bacteria most typical of the upper respiratory tract microflora were selected for testing. The results showed that untreated samples did not affect the growth of microorganisms, while electreted fabrics showed selective bacteriostatic activity. It was found that the electret effect suppresses the development of gram-positive bacteria such as Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pyogenes, Streptococcus viridians, etc. At the same time, gram-negative microorganisms such as Escherichia coli, Klebsiella pneumoniae, etc. were resistant to the effect. This is explained by differences in the structure of the cell wall: gram-negative bacteria have an additional outer membrane that provides protection from external factors. The data obtained indicate the prospects of using electret polypropylene materials in the production of disposable medical masks. Such products can reduce the risk of spreading airborne infections by suppressing the growth of pathogenic gram-positive bacteria.
This study investigated the possibility of imparting bacteriostatic properties to nonwoven polypropylene materials used in the production of medical masks by creating an electret state. The objects of the study were nonwoven polypropylene fabrics manufactured by the Spunbond (density 20 g / m²) and Meltblown (density 25 g / m²) methods, which are most widely used in the medical industry. The antimicrobial effect of the electreted materials was assessed after their treatment with the corona discharge method, and their sensitivity to modified materials was determined by the disk diffusion method on the Mueller-Hinton agar nutrient medium. The study also involved control groups of untreated samples to ensure the reliability of the results. Bacteria most typical of the upper respiratory tract microflora were selected for testing. The results showed that untreated samples did not affect the growth of microorganisms, while electreted fabrics showed selective bacteriostatic activity. It was found that the electret effect suppresses the development of gram-positive bacteria such as Staphylococcus aureus, Staphylococcus epidermidis, Streptococcus pyogenes, Streptococcus viridians, etc. At the same time, gram-negative microorganisms such as Escherichia coli, Klebsiella pneumoniae, etc. were resistant to the effect. This is explained by differences in the structure of the cell wall: gram-negative bacteria have an additional outer membrane that provides protection from external factors. The data obtained indicate the prospects of using electret polypropylene materials in the production of disposable medical masks. Such products can reduce the risk of spreading airborne infections by suppressing the growth of pathogenic gram-positive bacteria.
Keywords:
MELTBLOWN, SPUNBOND, ELECTRETS, BACTERIOSTATIC EFFECT, MICROORGANISMS, MEDICAL MASK, GRAM-POSITIVE BACTERIA
MELTBLOWN, SPUNBOND, ELECTRETS, BACTERIOSTATIC EFFECT, MICROORGANISMS, MEDICAL MASK, GRAM-POSITIVE BACTERIA
