Banca de DEFESA: RELLYSON PAULO DE SOUSA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : RELLYSON PAULO DE SOUSA
DATE: 29/09/2022
TIME: 09:00
LOCAL: Plataforma Google Meet - meet.google.com/pei-xhme-ftj
TITLE:

EFFICIENCY OF PARTICLE FILTERING IN TEXTILE FABRICS USED IN HOMEMADE FACE MASKS

KEY WORDS:

Sars-CoV-2, Masks, Filtration efficiency, Textile fabrics

PAGES: 50
BIG AREA: Engenharias
AREA: Engenharia Química
SUBÁREA: Tecnologia Química
SPECIALTY: Têxteis
SUMMARY:

This scientific study aims to evaluate the filtering efficiency of particles in different textile fabrics used to produce homemade face masks, and compare them with face protection masks already on the market. The efficiency of twelve types of masks for non-professional use, produced from TNT (Non Woven Fabric) with different weights, 100% cotton fabric and mesh, was evaluated and compared with commercial N95/PFF2/surgical masks. The masks were made with double and triple layers of fabric, in order to analyze the effect and suitability of hybrid multilayer approaches for homemade masks, in order to establish a more efficient combination between the materials studied. The samples produced were characterized via weight analysis and the correlation between the permeability of textile fabrics and their retention power of aerosol particles were evaluated through the absorption of various sizes of monodisperse aerosol spheres by the Particle Filtration Efficiency test. Salt (EFS). These results were compared with the reference results of commercial masks with a particulate filter, which meet the N95 standard. For each tissue analyzed, the types of substrate, weight and number of layers were factors that significantly influenced the filtration efficiency (EF) of aerosol particles and may be related to protection against particles that transmit the SARS-CoV-2 virus. . Homemade face protection masks produced with tricoline fabric and 100% cotton mesh showed EF below 60% for a particle size of 10 nm. On the other hand, TNT masks with different layers showed EF greater than 80% compared to hospital surgical masks, N95 and PFF2 S. Therefore, homemade masks provide less protection for the population, but their use can prevent against the high transmissibility of the SARS-CoV-2 virus, which causes the disease COVID-19, as well as other viruses.

COMMITTEE MEMBERS:
Presidente - 1523912 - TATIANA DE CAMPOS BICUDO
Interno - 2239386 - JOSE IVAN DE MEDEIROS
Externo ao Programa - 1195339 - FRANCISCO CLAUDIVAN DA SILVA - UFRNExterno à Instituição - BRENNO HENRIQUE SILVA FELIPE