Multi-Finishing of Polyester and Polyester Cotton Blend Fabrics Activated by Enzymatic Treatment and Loaded with Zinc Oxide Nanoparticles

The present work discusses the possibility of applying enzymatic treatments for fabric surface activation that can facilitate the loading of zinc oxide nanoparticles (ZnO NPs) onto polyester (PET) and polyester cotton blend (PET/C) fabrics prepared by sol-gel method. Activated polyester fabrics loaded by ZnO NPs were investigated by the use of scanning electron microscopy (SEM), electron dispersion emission X-ray (EDX) and Fourier transformed infrared spectroscopy (FT-IR). The functionality of activated polyester fabrics loaded by ZnO NPs was evaluated by analyzing its antimicrobial activity and UV protection efficiency. Antimicrobial activity of activated polyester fabrics and loaded by ZnO NPs was tested against Gram-positive (Bacillus mycoides), Gram-negative (Escherichia coli), and nonfilamentous fungus (Candida albicans). The level of UV protection was verified by the UV protection factor (UPF) of polyester fabrics. Activated post-treated polyester fabrics exhibited outstanding antimicrobial and UV protection efficiency. The achieved antimicrobial function and UV protection on the polyester fabrics are durable with repeated laundering processes even after five washing cycles

Synergizing effect of poly quaternary ammonium salts and metal oxides nanoparticles on wool and wool/polyester fabrics

A new finishing technique using quaternary ammonium groups (QAG) via polymerization of methacryloyloxyethyl ammonium chloride (PMAETAC), in presence of TiO2 /ZnO / TiO2+ZnO nanoparticles in wool, wool/polyester fabrics has been studied, using K2S2O8 as initiator for the graft copolymerization reaction. The antimicrobial activities of the finished fabrics have been assessed against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa as well as Candida albicans. The findings show that, the finished fabrics with PMAETAC and their hydride combination with metal oxide NPs have outstanding activity against E. coli & S. aureus as well as excellent UV protection as compared to that finished with PMAETAC alone. The finished fabrics are also characterized by Fourier transformation infrared. The topography of the fabrics surface is examined by SEM and EDX. After five washing cycles, the acquired properties are found slightly affected, indicating an excellent wash durability

Synergizing effect of poly quaternary ammonium salts and metal oxides nanoparticles on wool and wool/polyester fabrics

213-220A new finishing technique using quaternary ammonium groups (QAG) via polymerization of methacryloyloxyethyl ammonium chloride (PMAETAC), in presence of TiO2 /ZnO / TiO2+ZnO nanoparticles in wool, wool/polyester fabrics has been studied, using K2S2O8 as initiator for the graft copolymerization reaction. The antimicrobial activities of the finished fabrics have been assessed against Staphylococcus aureus, Escherichia coli and Pseudomonas aeruginosa as well as Candida albicans. The findings show that, the finished fabrics with PMAETAC and their hydride combination with metal oxide NPs have outstanding activity against E. coli & S. aureus as well as excellent UV protection as compared to that finished with PMAETAC alone. The finished fabrics are also characterized by Fourier transformation infrared. The topography of the fabrics surface is examined by SEM and EDX. After five washing cycles, the acquired properties are found slightly affected, indicating an excellent wash durability

Circular economy reinforcement through molecular fabrication of textile wastes with microbial synthesized ZnO nanoparticles to have multifunctional properties

Abstract The fibrous wastes generated from the mills of textile production can be recycled and converted into high add-values products to be implemented in several applications. The current study aimed to employ commercial free cellulase enzyme to partially hydrolyze (activate) the polyester cotton blended (PET/C) fibrous wastes by creation functional groups such as OH and COOH on their surfaces. The activated fibrous wastes were then modified by coating with ZnO nanoparticles (ZnO-NPs) biosynthesized by actinobacterial cultures free supernatant. The isolate was identified as Streptomyces pseudogriseolus with accession number of OR574241. The conditions that influence the actino-synthesis of ZnO-NPs were optimized and the product was characterized using spectroscopic vision, FTIR, XRD, TEM and SEM. The characteristic ZnO peaks were obviously observed by EDX analysis with 0.38 and 0.75% (wt%), respectively. TEM analyses proved the nanoscale of ZnO-NPs (5–15 nm) which was followed by cytotoxic evaluation for the produced NPs. Fortunately, the tested actino-ZnO-NPs didn’t have any cytotoxicity against human normal fibroblast cell line (BJ1), which means that the product can be safely used in a direct-contact with human skin. The treated PET/C blended waste fabrics coated with ZnO-NPs showed high antimicrobial activity and ultraviolet protection values after functionalization by cellulase. EDX analysis demonstrates the presence of Zn peaks on the coated fabrics compared with their absence in blank and control samples, while SEM images showed the formation of a thin layer of ZnO-NPs on the fabric surface. The obtained smart textile can be applied several needed sectors

Correction to: Biosynthesis and characterization of silver nanoparticles induced by fungal proteins and its application in different biological activities

In the publication of this article [1], the title of Figure 6 was missing. The original article has been corrected

Biosynthesis and characterization of silver nanoparticles induced by fungal proteins and its application in different biological activities

Abstract Background The present study aims to apply an efficient eco-friendly and inexpensive process for green synthesis of silver nanoparticles (AgNPs) through the mediation of fungal proteins from Aspergillus fumigatus DSM819, characterization, and its application as antimicrobial finishing agent in textile fabrics against some infectious microorganisms. Results Optimum conditions for AgNP biosynthesis could be achieved by means of using 60% (v/v) of cell-free filtrate (CFF) and 1.5 mM of AgNO3 at pH 10.0 after 90 min. The obtained AgNPs were of spherical shape with 90% of distribution below than 84.4 nm. The biosynthesized AgNPs exerted an antimicrobial activity against the studied pathogenic microorganisms (E. coli, B. mycoides, and C. albicans). In addition, IC50 values against in vitro tumor cell lines were found to be 31.1, 45.4, 40.9, and 33.5 μg/ml for HCT116, A549, MCF7, and PC3, respectively. Even with a very low concentration (0.25%), the treated PET/C fabrics by AgNPs exerted an antimicrobial activity against E. coli, B. mycoides, and C. albicans to give inhibition zone diameter of 15, 15, and 16 mm, respectively. Conclusions The green biosynthesis approach applied in this study is a non-toxic alternative to the traditional chemical and physical methods, and would be appropriate for biological large-scale production and prospective treatments. Graphical abstrac