Antibacterial, UV protective and ammonia sensing functionalized polyester fabric through in situ synthesis of cuprous oxide nanoparticles

This article introduces a facile approach for applying a eutectic mixture of fatty acid phase-change materials (PCMs) on polyester fibers for thermal conductivity improvement via the in situ incorporation of copper nanoparticles. For this purpose, a eutectic mixture of palmitic acid and lauric acid was applied as PCMs and ascorbic acid was applied for the synthesis of copper nanoparticles. The thermal properties and stability of the treated samples were also determined by differential scanning calorimetry and thermogravimetry analysis. The treated samples indicated appropriate phase-transition temperatures between 29.1 and 36.8 C, with relevant latent heats of 49.4 and 49.9 J/g, respectively. The in situ formation of copper nanoparticles into eutectic fatty acid applied on the polyester fibers resulted in the promotion of the thermal conductivity of the composite by about 100.1% with the maximum amount of nanoparticles. In addition, the treated samples maintained good thermal durability and stability after 100 melting and freezing cycles. In addition, the tensile strength of the treated samples was improved. Overall, this treatment could be used to produce promising form-stabilized composite PCMs and thermoregulated polymers and textiles with appropriate phase-transition ranges and thermal conductivity.

Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 96%

In situ incorporation and loading of copper nanoparticles into a palmitic–lauric phase‐change material on polyester fibers

Rezaie

Montazer

2018

“…So far, nano‐Cu 2 O have received considerable attention because of their unique properties, including their optical, catalytic, electrical, antibacterial, and antifungal properties and low cost . Generally, Cu(I) and metallic Cu have presented higher antibacterial properties than Cu(II) .…”

Section: Introductionmentioning

confidence: 99%

“…Generally, Cu(I) and metallic Cu have presented higher antibacterial properties than Cu(II) . It was reported that nano‐Cu 2 O showed no cytotoxicity against human tissues at lower concentrations . Singh et al .…”

Section: Introductionmentioning

confidence: 99%

“…reported that nano‐Cu 2 O showed no cytotoxicity at 625 to 10,000 μg/mL concentrations via a hemolysis assay. Treated polyester fabrics with a lower nano‐Cu 2 O concentration presented no harmful effects against human dermal fibroblasts . Moreover, nano‐Cu 2 O have more advantages over nano‐titanium oxide (nano‐TiO 2 ) and nano‐zinc oxide (nano‐ZnO).…”

Section: Introductionmentioning

confidence: 99%

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Green electrospun nanocuprous oxide–poly(ethylene oxide)–silk fibroin composite nanofibrous scaffolds for antibacterial dressings

Zheng

Zhang

et al. 2019

Cuprous oxide (Cu 2 O) nanoparticles have attracted extensive attention because of their excellent optical, catalytic, antibacterial, and antifungal properties and low cost. Nano-Cu 2 O-poly(ethylene oxide) (PEO)-silk fibroin (SF) composite nanofibrous scaffolds (CNSs) were fabricated through green electrospinning to impart excellent antibacterial properties onto nanofibrous scaffolds. Scanning electron microscopy revealed that the nanofibers became more nonuniform and appeared more and more as beads in the nanofibers with increasing nano-Cu 2 O concentration, and no obvious morphological changes were observed after 75% EtOH vapor treatment. Transmission electron microscopy and X-ray photoelectron spectroscopy demonstrated that nano-cuprous oxide (nano-Cu 2 O) was successfully loaded into the PEO-SF nanofibers. Fourier transform infrared-attenuated total reflectance spectroscopy results indicate that nano-Cu 2 O did not induce SF conformation from random coils to β sheets. The SF conformation converted from random coils to β sheets after 75% EtOH vapor treatment. The results of water contact angle testing and swelling property measurement clarified that nano-Cu 2 O-PEO-SF CNSs possessed outstanding hydrophilicity. Nano-Cu 2 O-PEO-SF CNSs exhibited better antibacterial activity against both Gram-negative Escherichia coli and Gram-positive Staphylococcus aureus bacteria than PEO-SF nanofibrous scaffolds, and the antibacterial activity increased with increasing nano-Cu 2 O concentration. Cell viability studies with pig iliac endothelial cells demonstrated that nano-Cu 2 O-PEO-SF CNSs had no cytotoxicity. Nano-Cu 2 O-PEO-SF CNSs are expected to be ideal biomimetic antibacterial dressings for wound healing.

A study on melt spinning of polyethylene terephthalate filament yarns containing various concentrations of synthesized CuO nanoparticles

Heydari,

Tavanaie,

Montazer

et al. 2023

Self Cite

In this research the CuO nanoparticles were synthesized with four different methods then used to produce polyethylene terephthalate (PET) fibers with antibacterial, antifungal, and photocatalytic properties during the melt spinning process. Nanoparticles were synthesized in different ways using copper acetate salt (Cu(CH3COO)2) and sodium hydroxide (NaOH). The synthesis of copper oxide (CuO) nanoparticles was confirmed by field‐emission scanning electron microscopy (FE‐SEM images), EDX patterns, TGA, FTIR, X‐ray diffraction pattern XRD, and UV‐vis absorption spectrum. The results showed that synthesized nanoparticles exhibited strong antibacterial activity against gram‐positive and gram‐negative bacteria. Finally, after examining the fibers with different percentages of nanoparticles), fibers containing 1% of nanoparticles were produced using a 20% nanocopper oxide masterbatch as the optimal sample. The presence of nanoparticles in the fiber structure was confirmed by FE‐SEM images, EDX, XRD, and FTIR analysis. Furthermore, the tensile properties, thermal behavior, and photocatalytic properties of the fibers were investigated. Evaluation of the antibacterial and antifungal activity of the produced fibers against gram‐positive bacteria Staphylococcus aureus and Candida albicans fungus showed about 90% death of bacteria and fungi.