Fabrication of biodegradable polyurethane electrospun webs of fibers modified with biocompatible graphene oxide nanofiller
| Autor: | Petre Makreski, Aleksandra Ivanoska-Dacikj, Gordana Bogoeva-Gaceva |
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| Rok vydání: | 2021 |
| Předmět: |
Fabrication
Materials science Biodegradable polyester Polymers and Plastics Graphene Materials Science (miscellaneous) Oxide Nanotechnology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Biocompatible material 01 natural sciences Industrial and Manufacturing Engineering Electrospinning 0104 chemical sciences law.invention chemistry.chemical_compound chemistry law Biodegradable polyurethane Chemical Engineering (miscellaneous) 0210 nano-technology |
| Zdroj: | Journal of Industrial Textiles. 51:4041S-4065S |
| ISSN: | 1530-8057 1528-0837 |
| DOI: | 10.1177/15280837211003165 |
| Popis: | A successful optimization of the electrospinning parameters for obtainment of biodegradable polyester urethane (DP) webs of fibers, neat and graphene oxide (GO) modified, was performed. The effect of the processing parameters (distance between the needle tip and the collector, applied voltage, and flowing rate), solution type and polymer concentration, on the fiber-forming process and the obtained fibers’ morphology was examined. The best homogeneity of the fibers was achieved for 12 wt% DP dissolved in 80:20 wt% mixture of chloroform and ethanol, applying similar processing parameters for the neat and modified samples (0.5 ml/h pumping rate, 15 kV applied voltage, and 150 mm distance to the collector, for the neat sample, and 0.4 ml/h, 18 kV, and 110 mm, for the GO modified samples). The main novelty of this work is the modification of DP with low quantities (0.5, 1.0 and 2.0 wt%) of GO – the “next generation” nanomaterial for stem cell control. The morphological characterization revealed a fibrous microstructure consisting of randomly oriented fibers with a diameters ranging from hundreds nanometers to couple micrometers, representing a feasible imitation of the structure of extracellular matrix (ECM). The XRD studies showed high dispersion of GO in DP matrix and even exfoliation for the sample that contains 2 wt% GO. Raman studies neatly complemented the highest filler/matrix interactions and the superior levels of dispersion for this sample. TGA was used to analyze the thermo-oxidative degradation and also to determine the actual content of GO present in the samples. |
| Databáze: | OpenAIRE |
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