title: In-situ deposition of Cu2O micro-needles for biologically active textiles and their release properties.
abstract: Metal/metal oxide containing fibres are gradually increasing in textile industrialization recently, owing to their high potential for application as antimicrobial textiles. In this study, the reducing properties of cellulose were applied to synthesize cuprous oxide in-situ. The direct formation of Cu2O on viscose fabrics was achieved via quite simple technique in two subsequent steps: alkalization and sorption. Cu contents in fabrics before and after rinsing ranged between 45.2-86.4mmol/kg and 18.1-67.7mmol/kg, respectively. Uniform micro-needles of Cu2O were obtained with regular size and dimensions of 1.60±0.20μm in length and 0.13±0.03μm in width. Release of Cu1+/2+ions from selected samples was studied in water, physiological fluid and artificial sweat. Copper containing fabrics exhibited a percent of 96.8-97.8% and 85.5-89.0% for reduction in microbial viability, which was tested for S. aureus (as gram positive bacteria), E. coli (as gram-negative bacteria) and C. albicans and A. niger (as fungal species), respectively after 24h contact time.
authors.affiliation: Pretreatment and Finishing of Cellulosic Fibers, Textile Research Division, National Research Centre, Scopus Affiliation ID 60014618, El Buhouth St., Dokki, Cairo, 12622, Egypt. Electronic address: hossamelemam@yahoo.com.
authors.forename: Hossam E
authors.initials: HE
authors.lastname: Emam
authors.affiliation: Chemistry Department, Faculty of Science, Helwan University, Ain-Helwan, Cairo, 11795, Egypt.
authors.forename: Hanan B
authors.initials: HB
authors.lastname: Ahmed
authors.affiliation: Research Institute of Textile Chemistry and Textile Physics, University of Innsbruck, Hoechsterstrasse 73, A-6850 Dornbirn, Austria(1).
authors.forename: Thomas
authors.initials: T
authors.lastname: Bechtold
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D004926:Escherichia coli; D013211:Staphylococcus aureus; D013784:Textiles
chemical_list: D000900:Anti-Bacterial Agents; D003300:Copper; C000520:cuprous oxide
keywords: Antimicrobial; Cellulose; Cu(2)O; Durability; Release; Viscose