20.500.12556/RUL-164733 Tailoring of multifunctional cotton fabric by embedding a TiO$_2$+ZnO composite into a chitosan matrix Oblikovanje večfunkcionalne bombažne tkanine z vgraditvijo kompozita TiO$_2$+ZnO v matrico hitozana The use of nanomaterials to functionalise textiles offers new opportunities for chemical modification of textile fibres’ surfaces to achieve multifunctional protective properties. In this study, novel coatings were tailored on cotton fabric by embedding a mixture of TiO$_2$ and ZnO nanoparticles (NPs) of different molar ratios into a chitosan polymer matrix. The excitation energies of the TiO$_2$+ZnO composites generated in the coatings ranged from 3.20 eV to 3.25 eV, indicating that the photocatalytic performance of the functionalised cotton was driven by UV light. The presence of TiO$_2$+ZnO composites increased the UV protection factor (UPF) of the cotton fabric from 4.2 for the untreated sample to 15–21 for the functionalised samples. The UPF values of the coatings slightly decreased after repeated washing. The ZnO in the TiO$_2$+ZnO composites conferred biocidal activity to the coatings, which were resistant to washing at higher ZnO concentrations. In addition, the TiO$_2$in the TiO$_2$+ZnO composites was responsible for the enhanced photocatalytic self-cleaning of the functionalised cotton, which was observed during the initial period of illumination at lower ZnO concentrations in the composite. The main advantage of these TiO$_2$+ZnO composite coatings is their multifunctionality, which cannot be provided by single-component TiO$_2$ or ZnO coatings. Moreover, these coatings have wide-ranging practical applications, as they were composed of commercially available nanomaterials and were applied using conventional pad–dry–cure equipment. Uporaba nanomaterialov za funkcionalizacijo tekstilij ponuja nove možnosti kemijske modifikacije površine tekstilnih vlaken za dosego multifunkcionalnih zaščitnih lastnosti. V raziskavi je bila na bombažni tkanini oblikovana nova prevleka z vgraditvijo mešanice nanodelcev (ND) TiO$_2$ in ZnO različnih molarnih razmerij v matrico hitozana. Energije za vzbujanje oblikovanih kompozitov TiO$_2$+ZnO v prevleki so bile med 3,20 eV in 3,25 eV, kar pomeni, da je za fotokatalitsko delovanje funkcionaliziranega bombaža potrebna UV-svetloba. Prisotnost kompozita TiO$_2$+ZnO je povečala UV zaščitni faktor (UZF) s 4,2 za neapretiran bombaž na 15–21 za funkcionalizirane vzorce. Vrednosti UZF-prevlek so se po večkratnem pranju nekoliko zmanjšale. ZnO je kompozitu TiO$_2$+ZnO zagotovil biocidno aktivnost, ki je bila pri višjih koncentracijah ZnO pri pranju obstojna. TiO$_2$ je kompozitu TiO$_2$+ZnO zagotovil izboljšano fotokatalitsko samočistilnost funkcionaliziranega bombaža, ki je bila opazna pri začetnih časih osvetljevanja in pri nižjih koncentracijah ZnO v kompozitu. Glavna prednost kompozitnih prevlek TiO$_2$+ZnO je njihova večfunkcionalnost, ki je z enokomponentnimi prevlekami TiO$_2$ ali ZnO ni bilo mogoče doseči. Prevleke imajo široko praktično uporabo, saj vključujejo komercialno dosegljive nanomateriale in so nanesene s konvencionalno opremo za impregniranje, sušenje in kondenziranje. titanium dioxide zinc oxide chitosan coating cotton UV protection antimicrobial activity photocatalytic self-cleaning titanov dioksid cinkov oksid hitozan prevleka bombaž UV-zaščita protimikrobna aktivnost fotokatalitska samočistilnost true false true Angleški jezik Slovenski jezik Članek v reviji 2024-11-08 10:56:02 2024-11-08 11:03:37 2026-02-03 04:26:07 0000-00-00 00:00:00 2023 0 0 Str. 134-147 no. 2 Vol. 66 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 677 0351-3386 10.14502/tekstilec.66.2023049 160303619 10.14502Tekstilec2023.66.2023049.pdf 10.14502Tekstilec2023.66.2023049.pdf 1 0347E7C54D198496209B7E0E13E060CB 61b465e7c2817abc2b27036cffcbca579344ab0680b956829b923ec1bc995a2d 7d81c2e1-0028-11f1-a1ba-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=226980 https://journals.uni-lj.si/tekstilec/article/view/14551 0 6002b862-9db8-11ef-b232-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=195365 Naravoslovnotehniška fakulteta Tekstilec 0 0 0