Location
Nessmith-Lane Atrium
Session Format
Poster Presentation
Research Area Topic:
Engineering and Material Sciences - Hybrid (nano) Composite Materials
Abstract
This study reports the fabrication of corona treated hybrid nanocomposite fibers by blending Polyacrylonitrile (PAN), Polyvinylidene fluoride (PVDF), and single-walled carbon nanotubes (SWCNT) in a solution spinning process. Plasma treated nanocomposite textile fiber offers the possibility of better morphological and piezoelectric property by shifting PVDF crystalline phase from ë± to ë_. Plasma application setup consists of a high voltage power supply, a ballast resistor, anode and cathode. Corona and normal glow plasma were generated by altering voltage, current and the distance between anode and cathode. A lab-scale solution spinning line consists of a constant torque gear pump and heated extrusion channels was used to produce the fibers. Both neat and CNT-loaded PAN-PVDF fibers were produced. The PVDF and CNT loading with respect to base polymer PAN were 2wt% and 7wt% respectively where DMF was used as solvent. The as-produced viscous gel-like solution was pumped through a spinneret to a coagulation bath. After the formation of fibers, plasma was applied immediately and the fibers were collected to a takeup roll at a draw ratio of 1:5. This study also investigate the effect of PVDF and CNT loading on a PAN fiber to improve crystallinity and thermal stability. The prepared fibers are characterized by differential scanning calorimetry (DSC), scanning electronic microscopy (SEM), and thermogravimetric analysis (TGA). Differential Scanning Calorimetry (DSC) study shows increased crystallinity in the hybrid fibers due to the inclusion of 7 wt% PVDF. A significant improvement in thermal stability of PAN-PVDF-SWCNT fibers compared to neat fibers are also observed in TG study. Scanning Electron Microscopy (SEM) shows the formation of micro-hollow and irregular features in the cross section in the nanocomposite fibers. Longitudinal views of outer surface of both neat PAN and PAN/PVDF/SWCNT fibers showed no indication of surface defects or protrusions. Tensile testing of corona treated fibers will be performed to determine the mechanical properties. And an impact test rig will be performed to observe the generation of voltage upon application of an impact load using a digital oscilloscope. Fourier Transform Infrared Spectroscopy (FTIR) will be done on fibers to analyze the effect of corona application.
Creative Commons License
This work is licensed under a Creative Commons Attribution 4.0 License.
Presentation Type and Release Option
Presentation (Open Access)
Start Date
4-16-2016 2:45 PM
End Date
4-16-2016 4:00 PM
Recommended Citation
Nahida, Quazi, "Corona Treated Hybrid Nanocomposite Textile Fiber" (2016). GS4 Georgia Southern Student Scholars Symposium. 83.
https://digitalcommons.georgiasouthern.edu/research_symposium/2016/2016/83
Corona Treated Hybrid Nanocomposite Textile Fiber
Nessmith-Lane Atrium
This study reports the fabrication of corona treated hybrid nanocomposite fibers by blending Polyacrylonitrile (PAN), Polyvinylidene fluoride (PVDF), and single-walled carbon nanotubes (SWCNT) in a solution spinning process. Plasma treated nanocomposite textile fiber offers the possibility of better morphological and piezoelectric property by shifting PVDF crystalline phase from ë± to ë_. Plasma application setup consists of a high voltage power supply, a ballast resistor, anode and cathode. Corona and normal glow plasma were generated by altering voltage, current and the distance between anode and cathode. A lab-scale solution spinning line consists of a constant torque gear pump and heated extrusion channels was used to produce the fibers. Both neat and CNT-loaded PAN-PVDF fibers were produced. The PVDF and CNT loading with respect to base polymer PAN were 2wt% and 7wt% respectively where DMF was used as solvent. The as-produced viscous gel-like solution was pumped through a spinneret to a coagulation bath. After the formation of fibers, plasma was applied immediately and the fibers were collected to a takeup roll at a draw ratio of 1:5. This study also investigate the effect of PVDF and CNT loading on a PAN fiber to improve crystallinity and thermal stability. The prepared fibers are characterized by differential scanning calorimetry (DSC), scanning electronic microscopy (SEM), and thermogravimetric analysis (TGA). Differential Scanning Calorimetry (DSC) study shows increased crystallinity in the hybrid fibers due to the inclusion of 7 wt% PVDF. A significant improvement in thermal stability of PAN-PVDF-SWCNT fibers compared to neat fibers are also observed in TG study. Scanning Electron Microscopy (SEM) shows the formation of micro-hollow and irregular features in the cross section in the nanocomposite fibers. Longitudinal views of outer surface of both neat PAN and PAN/PVDF/SWCNT fibers showed no indication of surface defects or protrusions. Tensile testing of corona treated fibers will be performed to determine the mechanical properties. And an impact test rig will be performed to observe the generation of voltage upon application of an impact load using a digital oscilloscope. Fourier Transform Infrared Spectroscopy (FTIR) will be done on fibers to analyze the effect of corona application.
