Optimization of the Electrospun Niobium-Tungsten Oxide Nanofibers Diameter Using Response Surface Methodology
Autor: | Mamoun Medraj, Babajide Oluwagbenga Fatile, Martin Pugh |
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Rok vydání: | 2021 |
Předmět: |
Materials science
Central composite design General Chemical Engineering Niobium Oxide chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences Article niobium–tungsten oxide response surface methodology chemistry.chemical_compound nanofibers General Materials Science Response surface methodology Composite material QD1-999 Spinning electrospinning 021001 nanoscience & nanotechnology Electrospinning 0104 chemical sciences Volumetric flow rate Chemistry chemistry Nanofiber 0210 nano-technology optimization |
Zdroj: | Nanomaterials Nanomaterials, Vol 11, Iss 1644, p 1644 (2021) Volume 11 Issue 7 |
ISSN: | 2079-4991 |
Popis: | The present research aimed to investigate the effect of working parameters on the electrospinning of niobium–tungsten oxide nanofibers and optimize the process using central composite design (CCD) based on the response surface methodology (RSM). An experiment was designed to assess the effects of five variables including the applied voltage (V), spinning distance (D), polymer concentration (P), flow rate (F), and addition of NaCl (N) on the resulting diameter of the nanofibers. Meanwhile, a second-order prediction model of nanofibers diameter was fitted and verified using analysis of variance (ANOVA). The results show that the diameter of the nanofibers was significantly influenced by all the variables except the flow rate. Some second-order and cross factor interactions such as VD, DP, PF, PN, and P2 also have significant effects on the diameter of the nanofibers. The results of the ANOVA yielded R2 and adjusted R2 values of 0.96 and 0.93 respectively, this affirmed that the predictive model fitted well with the experimental data. Furthermore, the process parameters were optimized using the CCD method and a maximum desirability function of 226 nm was achieved for the diameter of the nanofibers. This is very close to the 233 nm diameter obtained from a confirmatory experiment using the optimum conditions. Therefore, the model is representative of the process, and it could be used for future studies for the reduction of the diameter of electrospun nanofibers. |
Databáze: | OpenAIRE |
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