Incorporation of Fluorescent Dyes in Electrospun Chitosan/Poly(ethylene oxide)
| Autor: | Guilherme G. Bessegato, Cleber Antonio Lindino, Ariane R. de S. Rossin, Reinaldo Aparecido Bariccatti, Douglas C. Dragunski, Cristiane Guellis |
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| Rok vydání: | 2021 |
| Předmět: |
Thermogravimetric analysis
Materials science Ethylene oxide Scanning electron microscope Acridine orange biopolymers General Chemistry fibers Erythrosine Electrospinning chemistry.chemical_compound renewable polymers Differential scanning calorimetry chemistry luminescence Fourier transform infrared spectroscopy electrospinning Nuclear chemistry |
| Zdroj: | Journal of the Brazilian Chemical Society v.32 n.5 2021 Journal of the Brazilian Chemical Society Sociedade Brasileira de Química (SBQ) instacron:SBQ |
| ISSN: | 0103-5053 |
| DOI: | 10.21577/0103-5053.20210006 |
| Popis: | Polymeric films have been increasingly investigated due to the ease of miniaturization and integration in several sensor devices. Films obtained from the electrospinning technique have a controlled diameter and homogeneity, and substances can be incorporated into the polymeric network. Electrospinning fiber of chitosan (Ch) and poly(ethylene oxide) (PEO) was obtained from solutions prepared at different concentrations in acetic acid, and varying the distance and the voltage applied. The obtained films were characterized by scanning electron microscopy (SEM), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), X-ray diffraction (XRD) and UV-Visible specular reflectance spectra (UV-SRS). The best conditions for electrospinning were obtained for a 2% m/v (Ch + PEO) solution in the ratio 90:10% m/m (Ch:PEO), applied voltage of 18 kV, and 18 cm distance between the capillary tube and collector. Acridine orange, sodium fluorescein, and erythrosine fluorescence dyes were successfully incorporated into Ch:PEO films. The spectrofluorometric spectra of the films showed excitation and emission processes and the acridine orange film showed evidence of excimer formation by the presence of an excitation peak at 569 nm. Ch-PEO films with the incorporation of fluorescent dyes may well be used as flexible probes or sensors in colorimetric devices in biochemical applications. |
| Databáze: | OpenAIRE |
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