In recent years, Electrospinning (ES) has been revealed to be a straightforward and innovative approach to manufacture functionalized nanofiber-based membranes with high filtering performance against fine Particulate Matter (PM) and proper bioactive properties. These qualities are useful for tackling current issues from bacterial contamination on Personal Protective Equipment (PPE) surfaces to the reusability of both disposable single-use face masks and respirator filters. Despite the fact that the conventional ES process can be upscaled to promote a high-rate nanofiber production, the number of research works on the design of hybrid materials embedded in electrospun membranes for face mask application is still low and has mainly been carried out at the laboratory scale. In this work, a multi-needle ES was employed in a continuous processing for the manufacturing of both pristine Poly (Vinylidene Fluoride-co-Hexafluoropropylene) (PVDF-HFP) nanofibers and functionalized membrane ones embedded with TiO2 Nanoparticles (NPs) (PVDF-HFP@TiO2). The nanofibers were collected on Polyethylene Terephthalate (PET) nonwoven spunbond fabric and characterized by using Scanning Electron Microscopy and Energy Dispersive X-ray (SEM-EDX), Raman spectroscopy, and Atomic Force Microscopy (AFM) analysis. The photocatalytic study performed on the electrospun membranes proved that the PVDF-HFP@TiO2 nanofibers provide a significant antibacterial activity for both Staphylococcus aureus (~94%) and Pseudomonas aeruginosa (~85%), after only 5 min of exposure to a UV-A light source. In addition, the PVDF-HFP@TiO2 nanofibers exhibit high filtration efficiency against submicron particles (~99%) and a low pressure drop (~3 mbar), in accordance with the standard required for Filtering Face Piece masks (FFPs). Therefore, these results aim to provide a real perspective on producing electrospun polymer-based nanotextiles with self-sterilizing properties for the implementation of advanced face masks on a large scale.

Upscaling of Electrospinning Technology and the Application of Functionalized PVDF-HFP@TiO2 Electrospun Nanofibers for the Rapid Photocatalytic Deactivation of Bacteria on Advanced Face Masks / Cimini, Adriano; Borgioni, Alessia; Passarini, Elena; Mancini, Chiara; Proietti, Anacleto; Buccini, Luca; Stornelli, Eleonora; Schifano, Emily; Dinarelli, Simone; Mura, Francesco; Sergi, Claudia; Bavasso, Irene; Cortese, Barbara; Passeri, Daniele; Imperi, Enrico; Rinaldi, Teresa; Picano, Alfredo; Rossi, Marco. - In: POLYMERS. - ISSN 2073-4360. - 15:23(2023). [10.3390/polym15234586]

Upscaling of Electrospinning Technology and the Application of Functionalized PVDF-HFP@TiO2 Electrospun Nanofibers for the Rapid Photocatalytic Deactivation of Bacteria on Advanced Face Masks

Adriano Cimini
Primo
Writing – Original Draft Preparation
;
Alessia Borgioni
Secondo
Methodology
;
Elena Passarini
Methodology
;
Chiara Mancini
Methodology
;
Anacleto Proietti
Methodology
;
Luca Buccini
Methodology
;
Eleonora Stornelli
Methodology
;
Emily Schifano
Methodology
;
Simone Dinarelli
Methodology
;
Francesco Mura
Methodology
;
Claudia Sergi
Formal Analysis
;
Irene Bavasso
Formal Analysis
;
Barbara Cortese
Methodology
;
Daniele Passeri
Methodology
;
Teresa Rinaldi
Conceptualization
;
Marco Rossi
Conceptualization
2023

Abstract

In recent years, Electrospinning (ES) has been revealed to be a straightforward and innovative approach to manufacture functionalized nanofiber-based membranes with high filtering performance against fine Particulate Matter (PM) and proper bioactive properties. These qualities are useful for tackling current issues from bacterial contamination on Personal Protective Equipment (PPE) surfaces to the reusability of both disposable single-use face masks and respirator filters. Despite the fact that the conventional ES process can be upscaled to promote a high-rate nanofiber production, the number of research works on the design of hybrid materials embedded in electrospun membranes for face mask application is still low and has mainly been carried out at the laboratory scale. In this work, a multi-needle ES was employed in a continuous processing for the manufacturing of both pristine Poly (Vinylidene Fluoride-co-Hexafluoropropylene) (PVDF-HFP) nanofibers and functionalized membrane ones embedded with TiO2 Nanoparticles (NPs) (PVDF-HFP@TiO2). The nanofibers were collected on Polyethylene Terephthalate (PET) nonwoven spunbond fabric and characterized by using Scanning Electron Microscopy and Energy Dispersive X-ray (SEM-EDX), Raman spectroscopy, and Atomic Force Microscopy (AFM) analysis. The photocatalytic study performed on the electrospun membranes proved that the PVDF-HFP@TiO2 nanofibers provide a significant antibacterial activity for both Staphylococcus aureus (~94%) and Pseudomonas aeruginosa (~85%), after only 5 min of exposure to a UV-A light source. In addition, the PVDF-HFP@TiO2 nanofibers exhibit high filtration efficiency against submicron particles (~99%) and a low pressure drop (~3 mbar), in accordance with the standard required for Filtering Face Piece masks (FFPs). Therefore, these results aim to provide a real perspective on producing electrospun polymer-based nanotextiles with self-sterilizing properties for the implementation of advanced face masks on a large scale.
2023
Electrospinning, Facemask, Photocatalyitic materials
01 Pubblicazione su rivista::01a Articolo in rivista
Upscaling of Electrospinning Technology and the Application of Functionalized PVDF-HFP@TiO2 Electrospun Nanofibers for the Rapid Photocatalytic Deactivation of Bacteria on Advanced Face Masks / Cimini, Adriano; Borgioni, Alessia; Passarini, Elena; Mancini, Chiara; Proietti, Anacleto; Buccini, Luca; Stornelli, Eleonora; Schifano, Emily; Dinarelli, Simone; Mura, Francesco; Sergi, Claudia; Bavasso, Irene; Cortese, Barbara; Passeri, Daniele; Imperi, Enrico; Rinaldi, Teresa; Picano, Alfredo; Rossi, Marco. - In: POLYMERS. - ISSN 2073-4360. - 15:23(2023). [10.3390/polym15234586]
File allegati a questo prodotto
File Dimensione Formato  
Cimini_Upscaling-Electrospinning-Technology_2023.pdf

accesso aperto

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Creative commons
Dimensione 4.37 MB
Formato Adobe PDF
4.37 MB Adobe PDF

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1692785
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 1
  • ???jsp.display-item.citation.isi??? 1
social impact