A novel method to construct antimicrobial surface by decorating polyacrylonitrile nanofibrous membrane with nanoparticles

Abstract

In this paper, polyacrylonitrile (PAN) nanofibrous membranes (NFMs) were prepared by electrospinning technology. Copper (Cu) or/and zinc (Zn) nanoparticles (NPs) were deposited on the surface of PAN NFMs by spark ablation technology to fabricate a surface structure with antibacterial and hydrophobic properties. The deposition of NPs was controlled using current, voltage, carrier gas flow rate, and load time. The fabricated NFMs were characterized by FE-SEM, EDX, XRD, and water contact angle. Moreover, the antibacterial properties of the fabricated NFMs were studied using the agar-diffusion test method. The results showed that Cu, or/and Zn NPs successfully deposited on the surface of PAN NFMs, which improved the hydrophobicity by increasing the water contact angle from 46° to 128°, 130°, and 136°, respectively. Besides, the Zn@PAN NFMs sample was showed good antibacterial property against both Gram-negative and Gram-positive bacterial strains. Overall, the NPs@PAN NFMs based spark ablation technology might afford an easy-to-operated design pattern for constructing potential materials for water treatment applications.

Electrospun Biodegradable Nanofibers Coated Homogenously by Cu Magnetron Sputtering Exhibit Fast Ion Release. Computational and Experimental Study

“…The preparation of copper/copper oxide nanofibrous materials became a prevalent topic thanks to a vast range of applications of such nanomaterials, including catalysis [1,2], disinfection [3], antiviral nanocomposites [4], antibacterial wound dressings [5,6], sensors [7], CO 2 electrocatalytic reduction [8] and others. The advantage of using Cu nanofibers instead of other forms of nano or micromaterials is their high surface-to-volume ratio, the possibility to prepare sheets or foils of Cu nanofibers without any limitations in terms of their size, the opportunity to run the continuous roll-to-roll process, and its scalability.…”

“…Several approaches were employed to prepare Cu-containing nanofibers: electroless deposition on a nanofibrous foil as a template [8], self-assembly method using PANI nanofibers as a template [9], incorporation of Cu by admixture of Cu nanoparticles to the electrospinning solution [10], and decoration of nanofibers with Cu nanoparticles [5].…”

Facile and Green Fabrication of Superhydrophobic Polyacrylonitrile Nonwoven Fabric with Iron Hydroxide Nanoparticles for Efficient Oil/Water Separation

“…As such, there are a limited number of free hydrophilic nitrile groups that can interact with water molecules and cause the observed wetting behavior of the neat PAN fibers (Figure b). Interestingly, a similar wettability behavior has been reported for the electrospun PAN nanofibers decorated with Cu, Zn, or Cu/Zn nanoparticles (WCA ≈ 129°–136°) as compared to the neat electrospun PAN nanofibers (WCA ≈ 46°) . The surface of the neat PAN fibers is smooth (Figure a).…”

“…Interestingly, a similar wettability behavior has been reported for the electrospun PAN nanofibers decorated with Cu, Zn, or Cu/Zn nanoparticles (WCA ≈ 129°−136°) as compared to the neat electrospun PAN nanofibers (WCA ≈ 46°). 29 The surface of the neat PAN fibers is smooth (Figure 3a). However, when the iron hydroxide nanoparticles were deposited on the PAN fabric, the observed morphology of the individual fibers was changed due to the presence of micro/nanostructured features on the surface of the modified fibers (Figure 3b).…”

Development of novel segmented-pie microfibers from copper-carbon nanoparticles and polyamide composite for antimicrobial textiles application

“…8–11 Previous studies showed that copper exhibited broad-spectrum biocide effects and cost-effectiveness, which expanded the application in the fields of clothing, decoration, and medical care. 10–15 Other studies indicated that copper nanoparticles possessed notably increased physicochemical and antibacterial properties in comparison with copper micro particles, which was attributed to their higher surface-to-volume ratio. 12–14 Jiao et al.…”