title: Hydrogels made from chitosan and silver nitrate.
abstract: This work describes a gelation of chitosan solution with silver nitrate. Above the critical concentration of chitosan (c*), continuous hydrogels of chitosan-silver can be formed. At lower concentrations, the formation of nano- and micro-hydrogels is discussed. The sol-gel analysis was performed to characterise the hydrogels' swelling properties. Moreover, the following were employed: (i) mechanical testing of hydrogels, (ii) inductively coupled plasma-optical emission spectroscopy (ICP-OES) for the measurement of silver concentration, (iii) scanning electron microscopy (SEM) to examine the morphology of products obtained, and (iv) dynamic light scattering (DLS) and UV-vis spectrophotometry to examine products formed at low concentration of chitosan (c<c*). Some hydrogels were used for modification of cotton fabric in order to give it antimicrobial properties. The products obtained acted against Escherichia coli and Bacillus subtilis apart from the chitosan used that showed no such activity.
authors.affiliation: Department of Man-Made Fibres, Faculty of Material Technologies and Textile Design, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland; GeVero Co., Tansmana 2/11, 92-548 Łódź, Poland. Electronic address: marek.kozicki@p.lodz.pl.
authors.forename: Marek
authors.initials: M
authors.lastname: Kozicki
authors.affiliation: Institute of Technical Biochemistry, Faculty of Biotechnology and Food Sciences, Lodz University of Technology, Stefanowskiego 4/10, 90-924 Łódź, Poland.
authors.forename: Marek
authors.initials: M
authors.lastname: Kołodziejczyk
authors.affiliation: Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland.
authors.forename: Małgorzata
authors.initials: M
authors.lastname: Szynkowska
authors.affiliation: Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland.
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Pawlaczyk
authors.affiliation: Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland.
authors.forename: Ewa
authors.initials: E
authors.lastname: Leśniewska
authors.affiliation: Institute of General and Ecological Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland.
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Matusiak
authors.affiliation: Institute of Applied Radiation Chemistry, Faculty of Chemistry, Lodz University of Technology, Wróblewskiego 15, 93-590 Łódź, Poland.
authors.forename: Agnieszka
authors.initials: A
authors.lastname: Adamus
authors.affiliation: Department of Man-Made Fibres, Faculty of Material Technologies and Textile Design, Lodz University of Technology, Żeromskiego 116, 90-924 Łódź, Poland.
authors.forename: Aleksandra
authors.initials: A
authors.lastname: Karolczak
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry* / Q000494:pharmacology; D001412:Bacillus subtilis / Q000187:drug effects; D048271:Chitosan / Q000737:chemistry*; D004926:Escherichia coli / Q000187:drug effects; D020100:Hydrogels / Q000737:chemistry* / Q000494:pharmacology; D007700:Kinetics; D008970:Molecular Weight; D049329:Nanostructures / Q000737:chemistry; D012835:Silver Nitrate / Q000737:chemistry*; D013499:Surface Properties; D013784:Textiles / Q000382:microbiology
chemical_list: D000900:Anti-Bacterial Agents; D020100:Hydrogels; D048271:Chitosan; D012835:Silver Nitrate
keywords: Antimicrobial hydrogel; Antimicrobial textiles; Chitosan; Chitosan scaffold; Chitosan–silver hydrogel; Silver nitrate