The effect of silver nitrate addition on the properties of electrospun polycaprolactone membranes with potential application for electrical stimulation in tissue engineering

Correa, Estefania; Moncada, María Elena; Moglia, Italo; Zapata, V.H.

doi:10.3144/expresspolymlett.2022.31

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“…It has excellent thermal stability and chemical resistance, making the electrospinning process easier to control when used as a polymer in electrospinning. These nanofibers have been applied in fields such as air and wastewater filtration, tissue engineering, and biomedical engineering [ 13 , 14 , 15 , 16 ]. Many methods were studied for the conversion of silver nitrate to nanosilver.…”

Section: Introductionmentioning

confidence: 99%

Multi-Functional Electrospun AgNO3/PVB and Its Ag NP/PVB Nanofiber Membrane

Yan,

Cao,

Shi

et al. 2023

Molecules

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This study focuses on the fabrication of fiber membranes containing different concentrations of AgNO3 via the electrospinning technique. The AgNO3 present in the fibers is subsequently reduced to silver nanoparticles (Ag NPs) through UV irradiation. The resulting nanofiber film is characterized using scanning electron microscopy, X-ray diffraction, and evaluations of its anti-UV and anti-electromagnetic radiation properties. Experimental results demonstrate that increasing the AgNO3 content initially decreases and then increases the fiber diameter and fiber diameter deviation. Under UV light, the nanofibers fuse and bond, leading to an increase in the fiber diameter. AgNO3 is effectively reduced to Ag NPs after UV irradiation for more than 60 min, as confirmed by the characteristic diffraction peaks of Ag NPs in the XRD spectrum of the irradiated AgNO3/PVB fibers. The nanofiber film containing AgNO3 exhibits superior anti-UV performance compared to the film containing AgNO3-derived Ag NPs. The anti-electromagnetic radiation performances of the nanofiber films containing AgNO3 and AgNO3-derived Ag NPs are similar, but the nanofiber film containing AgNO3-derived Ag NPs exhibits higher performance at approximately 2.5 GHZ frequency. Additionally, at an AgNO3 concentration of less than 0.5 wt%, the anti-electromagnetic radiation performance is poor, and the shielding effect of the nanofiber film on medium- and low-frequency electromagnetic waves surpasses that on high-frequency waves. This study provides guidance for the preparation of polyvinyl butyral nanofibers, Ag NPs, and functional materials with anti-ultraviolet and anti-electromagnetic radiation properties.

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