title: Multifunctional finishing of wool fabrics by chitosan UV-grafting: an approach.
abstract: The aim of this study was the surface modification of wool fibers to confer a multifunctional finishing to the fabrics, improving the textile value and its applications without damage of comfort properties. The attention was focused on an economical and environmental friendly process to obtain an effective treatment with good durability to washing. Chitosan in acetic acid solution was applied by padding, and grafted by ultraviolet radiation, through radical reactions promoted by a photoinitiator. 2% chitosan grafted was enough to confer satisfactory antimicrobial activity (67% reduction of Escherichia coli) after an oxidative wool pre-treatment and 1h impregnation at 50 °C. Moreover treated wool fabrics showed a strong dyeability increase toward acid dye. However the evaluation of the treatment durability to laundering showed different behavior depending on the nature of the surfactants. Finally, anti-felting properties with respect to untreated fabrics were revealed, while no effect was shown toward anti-pilling properties.
authors.affiliation: Dipartimento di Scienza Applicata e Tecnologia, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy.
authors.forename: Monica
authors.initials: M
authors.lastname: Periolatto
authors.forename: Franco
authors.initials: F
authors.lastname: Ferrero
authors.forename: Claudia
authors.initials: C
authors.lastname: Vineis
authors.forename: Fabio
authors.initials: F
authors.lastname: Rombaldoni
mesh_terms: D000818:Animals; D048271:Chitosan / Q000737:chemistry* / Q000494:pharmacology; D004396:Coloring Agents / Q000737:chemistry; D004926:Escherichia coli / Q000187:drug effects; D013211:Staphylococcus aureus / Q000187:drug effects; D013499:Surface Properties; D013784:Textiles / Q000382:microbiology; D014466:Ultraviolet Rays; D014935:Wool / Q000737:chemistry*
chemical_list: D004396:Coloring Agents; D048271:Chitosan
keywords: Antibacterial; Chitosan; Finishing; Textile; Wool