Print ISSN: 1681-6900

Online ISSN: 2412-0758

Keywords : Electrospinning

Preparation and Characterization of NiTi/PVA Nanofibers by Electrospinning

Akram R. Jabur; Randa Al-Tuhafi

Engineering and Technology Journal, 2021, Volume 39, Issue 11, Pages 1674-1680
DOI: 10.30684/etj.v39i11.2272

NiTi alloys are widely used in biomedical applications for their unique properties particularly the shape memory effect, superelasticity, and biocompatibility. In this research, NiTi/PVA composite nanofibers are fabricated by electrospinning technique, using a novel method of producing NiTi ultrafine particles by immersing amorphous NiTi alloy in dilute aqua regia solution. The NiTi particles are successfully embedded in the PVA matrix. The produced NiTi particles are analyzed by X-ray diffraction (XRD), Energy dispersive spectroscopy (EDS), and Particle size analyzer. The XRD pattern of ultrafine NiTi particles shows much better phases as compared to the XRD pattern of the amorphous NiTi alloy sample. The morphology of the produced NiTi/PVA composite nanofibers are characterized by Field emission scanning microscope (FESEM), and Energy dispersive spectrometry (EDS). The test results show regular continuous smooth bead-free nanofibers.

Effect of NaCl Solution Addition on Improving Some of the Physical Properties of Nylon 6 Solutions used for Electro spinning Purpose

Fadhil A. Chayad; Akram R. Jabur; Noor M .Jalal

Engineering and Technology Journal, 2016, Volume 34, Issue 7, Pages 1265-1274

Nylon 6 / (0.5, 1, 1.5, 2 and 2.5) wt. % NaCl solutions were prepared for electrospinning technique. The electrical conductivity of polymeric solutionincreases directly with NaCl concentration from 3.8 (mS/ cm) for pure nylon solution to 12.7 mS/cm at nylon 6/ 2.5 wt. % NaCl, and slight decreasing the viscosity and the surface tension of the solution . Increasing the polymeric solution conductivity cause more electrical charges carried by the electrospinning jet. Prepared films morphology tested by SEM and the average fibers diameters measured for each concentration. In this research, it was proved that the nanofibers film shows decreasing the average diameter by increasing NaCl concentration.

Effect of Flow Rate on Characterizations of TiO2 Nano fibers using Electro spinning Method

Muhsin A. Kudhier; Raad S. Sabry; Yousif K. Al-Haidarie

Engineering and Technology Journal, 2015, Volume 33, Issue 9, Pages 1599-1607

TiO2nanofibers with anatase structure were synthesized by anelectrospinning method. X-ray diffraction measurements showed that TiO2 nanofibers were polycrystalline with anatase phase.The effects of flow rate parameter on TiO2 nanofibers were examined using atomic force microscopy, field emission scanning electron microscopy. The energy gap was estimated and optical behavior was studied using UV-Vis spectroscopy, and Photoluminescence spectroscopy. It was noted that the average diameter of these nanofibersincreases from (82-320) nm with increasing theflow rate from (1- 10ml/h) respectively. The length of the nanofibers reached to several microns.