Protective fibrous structures based on cellulose fibers functionalized with metal oxide nanoparticles by electrospinning and electrospray deposition

• Tipo: Artigo em Revista Científica Internacional
• Data: 2024-12-01

Autores

Cátia Graça (Autor) FEUP; O.S.G.P. Soares (Autor) FEUP; J. C. Araújo (Autor) Outra; Diana Ferreira (Autor) Outra; Miguel Fangueiro (Autor) Outra; P.M. Silva (Autor) Outra; M.A. Cerqueira (Autor) Outra; V. Tira-Picos (Autor) Outra; P. Neto (Autor) Outra

Revista

Título: International Journal of Biological Macromolecules

Vol. 282

ISSN: 0141-8130

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 0 Citações

Classificação Científica

CORDIS: Ciências Tecnológicas

FOS: Ciências da engenharia e tecnologias

Outras Informações

ID Authenticus: P-017-CAG

DOI: 10.1016/j.ijbiomac.2024.137218

Abstract (EN): This work aims to develop a bio-based fibrous material that is able to adsorb and degrade chemical and biological hazardous agents. Thus, cellulosic fabrics (flax) were functionalized with chitosan (CS) and poly(ethylene oxide) (PEO) electrospun nanofibers doped with titanium dioxide (TiO2) and cerium dioxide (CeO2) nanoparticles (NPs). The electrospray deposition of these NPs was also tested. The TiO2 NPs were synthesized using a very straightforward precipitation method. The successful synthesis was confirmed by Scanning Transmission Electron Microscopy (STEM) and Attenuated Total Reflectance-Fourier-Transform Infrared Spectroscopy (ATR-FTIR). The functionalization of the fabrics with the NPs and the nanofibers doped with NPs was proved by Field Emission Scanning Electron Microscopy (FESEM), ATR-FTIR, and Ground-State Diffuse Reflectance (GSDR). The developed samples presented antibacterial activity against Staphylococcus aureus (ATCC 6538) and Escherichia coli (ATCC 434), reaching values of 99.97 and 100.0 %, respectively. The degradation of methylene blue (MB) and dimethyl methylphosphonate (DMMP) was evaluated. The best samples were able to decompose 97.82 % of DMMP. The wash durability of the nanocoating was also tested. The developed fibrous structures show great potential for personal protection applications.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 15