Title :

Antiviral Functionalization of a Polypropylene Nonwoven as Self Decontaminating Layer for Respiratory Masks

Author(s) :

Maton, Mickael [Auteur]
Advanced Drug Delivery Systems (ADDS) - U1008
Gabut, Sarah [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Médicaments et biomatériaux à libération contrôlée: mécanismes et optimisation - Advanced Drug Delivery Systems - U 1008 [MBLC - ADDS]
Neut, Christel [Auteur]
Institut de Recherche Translationnelle sur l'Inflammation (INFINITE) - U1286
Institut de Recherche Translationnelle sur l'Inflammation (INFINITE) - U1286
Odou, Pascal [Auteur]
Groupe de Recherche sur les formes Injectables et les Technologies Associées (GRITA) - ULR 7365
Sacareau, Camille [Auteur]
Institut Pasteur de Lille
Pinon, Anthony [Auteur]
Institut Pasteur de Lille
Vialette, Michele [Auteur]
Institut Pasteur de Lille
Gerber, Gaetan [Auteur]
Martel, Bernard [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Unité Matériaux et Transformations (UMET) - UMR 8207
Blanchemain, Nicolas [Auteur]
Advanced Drug Delivery Systems (ADDS) - U1008

Journal title :

Biomaterials Science

Abbreviated title :

Biomater. Sci.

Publisher :

Royal Society of Chemistry (RSC)

Publication date :

2023

ISSN :

2047-4849

HAL domain(s) :

Chimie/Matériaux
Chimie/Polymères

English abstract : [en]

The aim of this work was to develop a filtering biocidal polypropylene (PP) nonwoven textile structure to block and inactivate airborne bacteria and viruses. PP filters were functionalized with a cyclodextrin (CD)-polycarboxylic ...
Show more >The aim of this work was to develop a filtering biocidal polypropylene (PP) nonwoven textile structure to block and inactivate airborne bacteria and viruses. PP filters were functionalized with a cyclodextrin (CD)-polycarboxylic acid-crosslinked polymer (PP-CD) through a pad/dry/curing process, and were then activated by padding in an alkyl dimethyl benzalkonium chloride (ADBAC) solution. The textile finishing process parameters were optimized with the perspective of mass production, considering the threshold temperature necessary for provoking crosslinking and the limitation of the low thermal stability of PP. The use of an aqueous solution containing hydroxypropyl-β-cyclodextrin (HPβCD), 1,2,3,4-butanetetracarboxylic acid (BTCA), ammonium hypophosphite (AH), and a surfactant allowed immobilization of the optimal quantity of cyclodextrin polymer under curing for 5 minutes at 125 °C without affecting the nonwoven PP structure. The presence of CD drastically increased the sorption of ADBAC on the textiles. There was leaching of ADBAC at the first rinsing and then satisfactory fastness at the second and third rinsings, revealing adsorption mechanisms by weak physical interactions, ionic interactions, and inclusion of ADBAC inside the CD cavities. SEM revealed no clogging of the nonwoven pores, nor any increase in the air flow resistance, as evaluated by pressure drop measurements. The filtration efficiency of particulate matter PM3.0 and PM0.5 was moderately affected, in contrast to that of PM0.3, which greatly decreased due to the loss of the electrostatic charge of the filter upon the functionalization process. Bactericidal tests resulted in a reduction of 3 log10 against Staphylococcus aureus, and for virucidal tests on human coronavirus HCoV-229E, there was a reduction of 3.4 log10, with both strains undergoing 20 minutes of contact. Finally, the filter we developed is manufacturable by a scalable process, and because of its filtration and biocidal performances, it is a choice material as a self-disinfecting layer in the fabrication of facepiece respirators.Show less >

Language :

Anglais

Peer reviewed article :

Oui

Audience :

Internationale

Popular science :

Non

Administrative institution(s) :

Université de Lille
CNRS
INRAE
ENSCL

Collections :

• Advanced Drug Delivery Systems (ADDS) - U1008
• Groupe de Recherche sur les formes Injectables et les Technologies Associées (GRITA) - ULR 7365
• Institut de Recherche Translationnelle sur l'Inflammation (INFINITE) - U1286
• Unité Matériaux et Transformations (UMET) - UMR 8207

Research team(s) :

Ingénierie des Systèmes Polymères

Submission date :

2023-03-28T10:14:40Z
2023-03-31T08:13:01Z
2024-04-02T14:59:04Z
2024-04-29T07:29:47Z