title: Surface cationized cellulose nanofibrils for the production of contact active antimicrobial surfaces.
abstract: In the last decade, a new fiber pretreatment has been proposed to make easy cellulose fibrillation into microfibrils. In this context, different surface cationized MFC was prepared by optimizing the experimental parameters for cellulose fibers pretreatment before fibrillation. All MFCs were characterized by conductometric titration to establish degree of substitution, field emission gun scanning electron microscopy (FEG-SEM), atomic force microscopy (AFM) and optical microscopy assessed the effect of pretreatment on the morphology of the ensuing MFCs. Antibacterial activities of neat and cationized MFC samples were investigated against Gram positive bacteria (Bacillus subtilis, Staphylococcus aureus) and Gram negative bacteria (Escherichia coli). The CATMFC sample at DS greater than 0.18 displayed promising results with antibacterial properties without any leaching of quaternary ammonium into the environment. This work proved the potential of cationic MFCs with specific DS for contact active antimicrobial surface applications in active food packaging, medical packaging or in health and cosmetic field.
authors.affiliation: University Grenoble Alpes, LGP2, F-38000 Grenoble, France; CNRS, LGP2, F-38000 Grenoble, France.
authors.forename: Seema
authors.initials: S
authors.lastname: Saini
authors.affiliation: University Grenoble Alpes, LGP2, F-38000 Grenoble, France; CNRS, LGP2, F-38000 Grenoble, France.
authors.forename: Çiğdem
authors.initials: Ç
authors.lastname: Yücel Falco
authors.affiliation: University Grenoble Alpes, LGP2, F-38000 Grenoble, France; CNRS, LGP2, F-38000 Grenoble, France.
authors.forename: Mohamed Naceur
authors.initials: MN
authors.lastname: Belgacem
authors.affiliation: University Grenoble Alpes, LGP2, F-38000 Grenoble, France; CNRS, LGP2, F-38000 Grenoble, France. Electronic address: julien.bras@grenoble-inp.fr.
authors.forename: Julien
authors.initials: J
authors.lastname: Bras
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry*; D001412:Bacillus subtilis / Q000254:growth & development; D002482:Cellulose / Q000737:chemistry*; D004852:Epoxy Compounds / Q000737:chemistry*; D018625:Microscopy, Atomic Force; D008855:Microscopy, Electron, Scanning; D057139:Nanofibers / Q000737:chemistry* / Q000648:ultrastructure; D000644:Quaternary Ammonium Compounds / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared; D013211:Staphylococcus aureus / Q000254:growth & development; D013499:Surface Properties
chemical_list: D000900:Anti-Bacterial Agents; D004852:Epoxy Compounds; D000644:Quaternary Ammonium Compounds; C045006:glycidyl trimethylammonium; D002482:Cellulose
keywords: Antibacterial; Cationic pretreatment; Cellulose microfibrils