Akademik Veri Yönetim Sistemi
Journal of the Faculty of Engineering and Architecture of Gazi University, cilt.38, sa.3, ss.1321-1330, 2023 (SCI-Expanded)
In paralleli with the developments in industry and technology, the number of studies on the development of membranes used in wateri and wastewater treatment is increasing. One of the current focus of researchers in the development of innovative membranes is nanofiber-based membranes with their specific characteristics. Many ipolymers are usedi in the production of nanofiber membranes, and ipolyamide-based ones are among the most preferred. In this study, nanofiber membrane production was carried out from polyamide 6.6 (PA66) polymer. Within the scope of the study, PA66 / TFE solutions with three different concentrations were prepared iby dissolving the PA66 polymer in i2-2-2 Trifluoroethylenei (TFE) solvent at 5%, 7% and 10% by weight. As ia result of the preliminary experiments with the prepared solutions, the most suitable production parameters for the production of membranes by electrospinning method were determined. Using these parameters, five different nanofiber membrane surfaces were produced. Structural characterization of the produced membrane surfaces was iperformed by Fourieri Transform Infrared Spectroscopy (FTIR), morphological characterization was performed by Scanning Electron Microscopy (SEM) and thermal characterization was performed by Thermogravimetric Analysis (TGA) and Differential Scanning Calorimetry (DSC) analysis. It was determined that the peak values obtained from the FTIR analyzes performed on PA66 nanofibers were compatible with the literature. When SEM images were examined, it was clearly seen that uniform nanofiber structure was formed in all samples. However, some bead formation was also observed in all samples except PA66TFE(10-2). It was determined from the DSC analyzes that the melting temperatures were at 251-258°C, and from the TGA analyses, the halving temperatures were found to be in the range of 423-428°C and the maximum mass loss was around 550°C.