Solution parameters in the manufacture of ceramic ZnO nanofibers made by electrospinning

Nonato, Renato C.; Morales, Ana Rita; Vieira, Amanda F. M.; Nista, Silvia Vaz Guerra; Mei, Lucia H. I.; Bonse, Baltus C.

doi:10.1007/s00339-016-9752-0

Cited by 12 publications

(14 citation statements)

References 15 publications

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“…The optimal electrospinning process parameters (mainly flow and voltage) to obtain a stable Taylor cone depend on the solution’s intrinsic parameters. When the design of experiments methodology is used to establish this dependence there are several approaches: to employ voltage and flow rate as selected variables [37,38], to use the same voltage and flow rate for all solutions [39,40], or to adjust these parameters in each solution. As mentioned in the introduction, we selected the last strategy in order to avoid effects due to the poor quality and low production of fibers in the response parameters.…”

Section: Resultsmentioning

confidence: 99%

Analysis of the Process Parameters for Obtaining a Stable Electrospun Process in Different Composition Epoxy/Poly ε-Caprolactone Blends with Shape Memory Properties

et al. 2019

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In this work Poly ε-caprolactone (PCL)/ Diglycidyl ether of bisphenol A (DGEBA) blends were electrospun and the obtained mats were UV cured to achieve shape memory properties. In the majority of studies, when blends with different compositions are electrospun, the process variables such as voltage or flow rate are fixed independently of the composition and consequently the quality of the fibers is not optimized in all of the range studied. In the present work, using the design of experiments methodology, flow rate and voltage required to obtain a stable process were evaluated as responses in addition to the fiber diameter and shape memory properties. The results showed that the solution concentration and amount of PCL played an important role in the voltage and flow rate. For the shape memory properties excellent values were achieved and no composition dependence was observed. In the case of fiber diameter, similar results to previous works were observed.

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Section: Resultsmentioning

confidence: 99%

Analysis of the Process Parameters for Obtaining a Stable Electrospun Process in Different Composition Epoxy/Poly ε-Caprolactone Blends with Shape Memory Properties

et al. 2019

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“…The molecular weight of the polymer can affect the rheological and electrical properties of the solution such as viscosity, surface tension and conductivity [ 124 ]. When the molecular weight is large, the intermolecular force is large, and the polymer may also generate more hydrogen bonds between the solvents, making the polymer expand, thus increasing the viscosity value [ 125 , 126 ]. Because of the inhomogeneity of polymer conductive system, the interchain conductivity is much lower than intrachain, and the larger the molecular weight, the smaller the degree of interchain discontinuity, the larger the interchain conductivity, and the larger the macroscopic conductivity [ 127 – 129 ].…”

Section: Parametersmentioning

confidence: 99%

“…The diameter of nanofibers decreases with the increase in the conductivity [ 113 , 135 ]. Some researchers also found the conductivity has negligible effect on the fiber diameter [ 126 ]. It has been found that theoretically the jet radius is inversely proportional to the cube root of the solution conductivity [ 51 ]: where r 0 is jet or filament radius, Q is the mass flow rate, ε is the permittivity, σ is the electric conductivity, ρ is the density.…”

Section: Parametersmentioning

confidence: 99%

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Research progress, models and simulation of electrospinning technology: a review

et al. 2021

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In recent years, nanomaterials have aroused extensive research interest in the world's material science community. Electrospinning has the advantages of wide range of available raw materials, simple process, small fiber diameter and high porosity. Electrospinning as a nanomaterial preparation technology with obvious advantages has been studied, such as its influencing parameters, physical models and computer simulation. In this review, the influencing parameters, simulation and models of electrospinning technology are summarized. In addition, the progresses in applications of the technology in biomedicine, energy and catalysis are reported. This technology has many applications in many fields, such as electrospun polymers in various aspects of biomedical engineering. The latest achievements in recent years are summarized, and the existing problems and development trends are analyzed and discussed.

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“…[26] Although ZnO is generally produced in the form of particles or nanoparticles, electrospun nanofibers have also been reported. [27][28][29] ZnO nanofibers, mainly those produced by electrospinning, have shown high aspect ratios. [28][29][30] Fibrous morphology is highly desirable for reinforcement of polymeric materials; however, no studies on ZnO nanofibers have been found for this application.…”

Section: Introductionmentioning

confidence: 99%

Nanocomposites of PLA/ZnO nanofibers for medical applications: Antimicrobial effect, thermal, and mechanical behavior under cyclic stress

Nonato

Mei

Bonse

et al. 2022

Polymer Engineering & Sci

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The application of biodegradable and biocompatible polymer poly(lactic acid) (PLA) in the medical field has been widely studied. In this study, films of neat PLA and PLA containing 1 wt% ZnO nanofibers obtained by electrospinning (PLA/ZnO) were successfully molded by solvent-cast three-dimensional (3D) printing. Mechanical behavior was assessed by conventional dynamic mechanical analysis (DMA) and by adapting the equipment conditions to simulate a mechanical fatigue test at human body temperature-cyclic stress in isotherm at 36.5 C. DMA results showed that for temperatures above 30 C, the storage module of PLA/ZnO was higher when compared to neat PLA, and in the fatigue test, PLA/ZnO withstood more than 3600 cycles while neat PLA failed after an average of 1768 cycles. Differential scanning calorimetry (DSC) tests revealed that cyclic stress did not cause changes in the degree of crystallinity of the PLA. The microdilution and plating methods were applied to bacteria (Staphylococcus aureus, Salmonella, and Escherichia coli) and to yeast (Candida albicans) and revealed the antimicrobial effect of ZnO nanofibers and the PLA/ZnO composite. The antimicrobial activity and fatigue resistance of PLA/ZnO nanocomposites indicate that the material has potential for application in bone implants.

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Solution parameters in the manufacture of ceramic ZnO nanofibers made by electrospinning

Cited by 12 publications

References 15 publications

Analysis of the Process Parameters for Obtaining a Stable Electrospun Process in Different Composition Epoxy/Poly ε-Caprolactone Blends with Shape Memory Properties

Analysis of the Process Parameters for Obtaining a Stable Electrospun Process in Different Composition Epoxy/Poly ε-Caprolactone Blends with Shape Memory Properties

Research progress, models and simulation of electrospinning technology: a review

Nanocomposites of PLA/ZnO nanofibers for medical applications: Antimicrobial effect, thermal, and mechanical behavior under cyclic stress

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