20.500.12556/DKUM-87713 Eco-finishing of cotton with chitosan and giant goldenrod (Solidago gigantea Aiton) aqueous extract for development of antioxidant and UV protective textiles Giant goldenrod (S. gigantea Aiton) is considered an invasive weed in Europe, Asia, Australia, and New Zealand. In this research, the untreated and chitosan-treated cotton fabrics were functionalized with goldenrod inflorescences aqueous extract, at room temperature and 95°C. Zeta potential of fabrics was determined as a function of pH and the results showed an increased isoelectric point from 2.50 to 5.25 and amphoteric character of the chitosan-treated sample. The antioxidant activity (AA) of extract and functionalized fabrics was determined using DPPH analysis, while color and ultraviolet protection factor (UPF) were determined spectroscopically before and after wash and lightfastness testing. The chitosan pretreatment and dyeing of cotton at higher temperature increased AA (from 41.19 ± 0.28 to 56.08 ± 0.25), UPF (from 33.05 to 51.59) and color strength (K/S) (from 1.74 to 2.21), providing dyed cotton with excellent UV protection and a free radical inhibition activity. The samples had good wash fastness in terms of color (ΔEab* < 1), but not in terms of UV protection (UPF value decreased after washing to 23.47). The overall lightfastness was good to excellent (the UPF values of chitosan and dyed samples did not change much after lightfastness test (UPF = 51.75). Goldenrod invasive plant eco-functionalisation cotton antioxidant activity UV protection zlata rozga invazivne rastline eko-funkcionalizacija bombaž antioksidativna aktivnost UV zaščita true false true Taylor & Francis Angleški jezik Slovenski jezik Članek v reviji 2024-03-25 14:27:57 2024-03-25 14:49:17 2024-04-03 14:04:39 0000-00-00 00:00:00 2023 0 0 Str. 1-13 Št. 2, št. članka 2253371 Letn. 20 2023 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 2023-09-03 677 163168003 10.1080/15440478.2023.2253371 1544-0478 Smid-2023-Eco-Finishing_of_Cotton_with_Chitosa.pdf Smid-2023-Eco-Finishing_of_Cotton_with_Chitosa.pdf 1 25EF5EC3A5121457B7B69DA75368D64A 6608a6ce7a803388af43b0f48e6b8847191f31eca49fb1a34a5a57ed9d365342 817e4444-eaad-11ee-affd-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=177376 https://doi.org/10.1080/15440478.2023.2253371 0 7f79405a-eaab-11ee-affd-00155d000105 https://dk.um.si/Dokument.php?lang=slv&id=177375 Fakulteta za strojništvo 0 0 0