Effects of poly(ethylene oxide) and ZnO nanoparticles on the morphology, tensile and thermal properties of cellulose acetate nanocomposite fibrous film

Abstract

A bio-based fibrous film intended to be used as a food-packaging component was electrospun from blend solutions of cellulose acetate (CA) in neat acetic acid and poly(ethylene oxide) (PEO) in 90% ethanol. The CA/PEO blend ratios were varied to determine the effects of PEO on the morphology, moisture-adsorption and tensile properties of the blended fibrous films. Zinc oxide nanoparticles (ZnO NPs) incorporated (2-20 wt% of PEO) into the blended fibers were tested for their effect on tensile and thermal properties of the nanocomposite films. The results indicated that the addition of PEO at 9 wt% improved tensile strength, elongation and elasticity (Po0.05) of the CA-based fibrous films. The energy-dispersive spectrometer-scanning electron microscopy results suggested that zinc elements were well dispersed in the CA-PEO-blend fiber matrix. The addition of ZnO NPs at 20 wt% of PEO led to a significant improvement in the elongation and tensile strength of the CA-PEO-blend fibrous film (Po0.05). This improvement was attributed to the association between ZnO NPs and the semi-crystalline structures of the PEO, as evidenced by differential scanning calorimetry thermograms and X-ray diffraction spectra.

Experimental design to evaluate properties of electrospun fibers of zein/poly (ethylene oxide) for biomaterial applications

“…In order to know the rheological behavior and, thus, to determine the viscosity of the solutions, shear stress versus shear rate curves were obtained for eight solutions, at a fixed 15% (w/v) polymeric mass concentration in ethanol/water (80/20, v/v), with 0%, 2%, 10%, 20%, 30%, 42%, 82%, and 100% PEO in the zein/PEO blend. All solutions showed pseudoplastic, non‐Newtonian behavior, as observed for most polymeric solutions, in which the viscosity decreases with increasing shear rate 37–39 …”

Research on the Structure of Fish Collagen Nanofibers Influenced Cell Growth

“…These nanofibers can mimic the dimensions, structure, and function of native extracellular matrix (ECM) constituents [5]. Moreover, the electrospun nanofibers have large surface area to volume ratio, which attached ligands [6], growth factors [7], and other biomolecules [8] onto fiber surfaces. Then, these factors locally modulate cell and tissue function and lastly enhance tissue regeneration [9,10].…”

Adsorption capability of heavy metals by chitosan/poly(ethylene oxide)/activated carbon electrospun nanofibrous membrane

“…PEO [Figure (b)] has monoclinic unit cells of crystals with four radially oriented PEO chains . PEO showed its characteristic peaks at 2θ = 19.12° and 23.24° . Chitosan is a partially crystalline polymer.…”

“…33 PEO showed its characteristic peaks at 2u 5 19.128 and 23.248. 34 Chitosan is a partially crystalline polymer. Chitosan showed [ Figure 9(c)] major crystalline peak at 2u 5 10.28 and 19.78 that corresponds to form I crystal of chitosan.…”