Effect of Ce3+ on the morphology, composition, and thermal properties of single and core-shell polyethylene oxide electrospun fibers
| Autor: | Luis A. Hoyos-Lima, Victor Altuzar, Josué F. Perzábal-Domínguez, Severino Muñoz-Aguirre, Aldo Y. Tenorio-Barajas, Martha A. Palomino-Ovando, Claudia O. Mendoza-Barrera |
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| Rok vydání: | 2023 |
| Předmět: | |
| Zdroj: | Revista Mexicana de Física. 69 |
| ISSN: | 2683-2224 0035-001X |
| Popis: | Cerium polymeric composites have novel applications in fuel cells, optical devices, gas sensors, catalysis, ultraviolet absorbers, hydrogen storage materials, and biomedicines. This study reports the fabrication of low-cost electrospun single and core-shell polyethylene oxide (PEO) doped with Cerium fibers fabricated in two moisture ambients. Scanning electron microscopy and atomic force microscopy revealed that obtaining the thinnest average fiber diameter requires 47-52 %RH and 2 % Cerium dopant. Using a PEO capping (shell fiber) allows the increment of Cerium in the inner matrix (core-fiber) to produce non-beading continuous fibers with 3.5% of the dopant. The undoped single or core-shell fibers presented a 52.7 to 54.2 % crystallinity, indecently of relative humidity used during the fabrication process. In contrast, the use of Cerium dopant up to 2% induces an increase in their crystallinity due to the formation of Ce-O species, enhancing their thermal properties, regardless of the moisture during manufacturing as was found with Fourier transform infrared spectroscopy, differential scanning calorimetry, and thermogravimetric analysis. |
| Databáze: | OpenAIRE |
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