Počet záznamů: 1
Influence of UV irradiation and subsequent chemical grafting on the surface properties of cellulose
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SYSNO ASEP 0555933 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Influence of UV irradiation and subsequent chemical grafting on the surface properties of cellulose Tvůrce(i) Neubertová, V. (CZ)
Kasálková-Slepičková, N. (CZ)
Vokatá, B. (CZ)
Bačáková, Lucie (FGU-C) RID, ORCID
Švorčík, V. (CZ)
Kolská, Z. (CZ)Celkový počet autorů 6 Zdroj.dok. Cellulose. - : Springer - ISSN 0969-0239
Roč. 29, č. 3 (2022), s. 1405-1418Poč.str. 14 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova antibacterial activity ; cellulose ; chemical grafting ; UV irradiation ; wettability ; zeta potential Obor OECD Bioproducts (products that are manufactured using biological material as feedstock) biomaterials, bioplastics, biofuels, bioderived bulk and fine chemicals, bio-derived novel materials CEP GA20-01641S GA ČR - Grantová agentura ČR NU20-08-00208 GA MZd - Ministerstvo zdravotnictví Výzkumná infrastruktura NanoEnviCz II - 90124 - Ústav fyzikální chemie J. Heyrovského AV ČR, v. v. i. Způsob publikování Omezený přístup Institucionální podpora FGU-C - RVO:67985823 UT WOS 000744805700001 EID SCOPUS 85123242759 DOI 10.1007/s10570-022-04426-8 Anotace This work is devoted to the study of surface properties of cellulose before and after a surface modification. Surface modification of polymeric materials was carried out in two steps: (1) activation by UV irradiation at 254 or 365 nm, followed by (2) chemical grafting with alanine, leucine or curcumin. Two types of cellulose materials, regenerated cellulose and cotton, were studied. The structure of cellulose at different stages of modification was examined by available physical and physico-chemical techniques and antibacterial activity of prepared composites was studied too. Antibacterial assays were performed on selected substrates. The results show that the changes in surface properties depend on the wavelength of UV irradiation as well as on the irradiation time. Smaller molecules of grafted substances (alanine and leucine) are bound not only onto the cellulose surface but also into the cellulose pores in contrast with curcumin. Cellulose substrates modified with alanine, leucine or curcumin show antibacterial activity, especially for S. epidermidis, also slightly against E. coli. The obtained results indicated the strongest antibacterial effect for cellulose grafted with curcumin, where CFU reduced by almost 58% for E. coli and 55% for S. epidermidis in comparison with pristine, alanine and leucine have only smaller effect. Pracoviště Fyziologický ústav Kontakt Lucie Trajhanová, lucie.trajhanova@fgu.cas.cz, Tel.: 241 062 400 Rok sběru 2023 Elektronická adresa https://doi.org/10.1007/s10570-022-04426-8
Počet záznamů: 1