Electrospinning fabrication and characterization of poly(vinyl alcohol)/layered double hydroxides composite fibers

Abstract

Nanofibers of poly(vinyl alcohol) (PVA)/ layered double hydroxide (Mg-Al LDH) composites are prepared by the electrostatic fiber spinning using water as the solvent at a high voltage of 21 kV. Either inorganic LDH carbonate (LDH-CO 3 ) or L-lactic acid-modified LDH (Lact-LDH) is used for incorporating with PVA. Scanning electron microscopy SEM investigations on the nanofibers suggest that the average diameters of PVA/LDH composite fibers are smaller than that of neat PVA. Transmission electron microscopy (TEM) investigations indicate that the dispersity of the LDH in PVA matrix is much improved after modification with L-lactic acid. The mechanical prop-erties of the PVA/LDH fibers are obviously enhanced compared to that of neat PVA. For example, the tensile stress and elongation at break of the PVA/Lact-LDH electrospun fibrous mat with 5 wt % Lact-LDH are 31.7 MPa and 36.7%, respectively, which are significantly higher than those of neat PVA, and also higher than those of PVA/LDH-CO 3 owing to the better dispersity of Lact-LDH nanoparticles.

Biocompatibility studies of electrospun nanofibrous membrane of PLLA‐PVA blend

“…The characteristic peak of PLLA and PVA was found to be at 2y ¼ 16.9 and 20 respectively as reported by many authors. [22][23][24][25] Figure 5(c, d) shows strong interaction between PLLA and PVA which leads to the amorphous nature of the blend. 24,26 Thermal Properties Figure 6 shows the TGA curves of PLLA, PVA, and PLLA-PVA blend.…”

Dispersion of surface-modified nano-Fe3O4 with poly(vinyl alcohol) in chiral poly(amide-imide) bearing pyromellitoyl-bis-l-phenylalanine segments

“…Among the various types of coupling agent, poly(vinyl alcohol) (PVA) can be attracted intense attention as an important class of poly hydroxy polymer, which is a watersoluble, biocompatible and biodegradable semi-crystalline polymer with good thermal stability, nontoxicity, and chemical resistance [14,15]. Therefore, it can be used in wide range of industrial, commercial, and medical areas such as membrane, drug delivery system, and resins [16][17][18].…”

AgNPs incorporated on deacetylated electrospun cellulose nanofibers and their effect on the antimicrobial activity

“…Polymeric fibers can be synthesized with the size from few nanometers to a number of micrometers in diameter by using novel electrospinning technique, which is widely used for the production of high‐performance nanofibers with different conditions like a large surface area to volume ratio and high porosity with tiny pore size . Electrospinning is a cost‐efficient technique to generate 1‐dimensional operational fiber with the small diameter utilizing different materials, like polymers and polymers blend . Nanofibers produced by electrospinning have many noteworthy operations due to the availability of functional additives such as essential oils, antimicrobial agents, and antioxidants .…”

“…4 Electrospinning is a cost-efficient technique to generate 1-dimensional operational fiber with the small diameter utilizing different materials, like polymers and polymers blend. [5][6][7][8] Nanofibers produced by electrospinning have many noteworthy operations due to the availability of functional additives such as essential oils, antimicrobial agents, and antioxidants. 9 However, these nanofibers are used in different range of applications, such as electronic devices, membranes, biosensors, wound healing, textile, and water treatment.…”