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Manufacturing and investigation of physical properties of polyacrylonitrile nanofibre composites with SiO 2 , TiO 2 and Bi 2 O 3 nanoparticles

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ABSTRACT

The aim of this study was to produce nanocomposite polymer fibres, consisting of a matrix of polyacrylonitrile (PAN) and a reinforcing phase in the form of SiO2/TiO2/Bi2O3 nanoparticles, by electrospinning the solution. The effect of the nanoparticles and the electrospinning process parameters on the morphology and physical properties of the obtained composite nanofibres was then examined. The morphology of the fibres and the dispersion of nanoparticles in their volume were examined using scanning electron microscopy (SEM). All of the physical properties, which included the band gap width, dielectric constant and refractive index, were tested and plotted against the concentration by weight of the used reinforcing phase, which was as follows: 0%, 4%, 8% and 12% for each type of nanoparticles. The width of the band gap was determined on the basis of the absorption spectra of radiation (UV–vis) and ellipsometry methods. Spectroscopic ellipsometry has been used in order to determine the dielectric constant, refractive index and the thickness of the obtained fibrous mats.

No MeSH data available.


Calculated diameters of nanofibres as a function of the distance between the nozzle and the collector for all produced samples.
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Figure 8: Calculated diameters of nanofibres as a function of the distance between the nozzle and the collector for all produced samples.

Mentions: The most frequently used distances between the nozzle and the collector, used during the electrospinning of composite PAN nanofibres reinforced with ceramic nanoparticles while applying a potential difference in the range of 15–21 kV, are between 10 and 15 cm. The composite nanoparticles obtained under these conditions have diameters of 300 and 800 nm [34–36]. In order to better understand the relationship between the electrode distance and the diameter of the obtained fibres, we used two different distances between the nozzle and the collector, namely 12.5 and 20.0 cm. The diameter of the obtained fibres was determined by SEM analysis (Fig. 8).


Manufacturing and investigation of physical properties of polyacrylonitrile nanofibre composites with SiO 2 , TiO 2 and Bi 2 O 3 nanoparticles
Calculated diameters of nanofibres as a function of the distance between the nozzle and the collector for all produced samples.
© Copyright Policy - Beilstein
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4979636&req=5

Figure 8: Calculated diameters of nanofibres as a function of the distance between the nozzle and the collector for all produced samples.
Mentions: The most frequently used distances between the nozzle and the collector, used during the electrospinning of composite PAN nanofibres reinforced with ceramic nanoparticles while applying a potential difference in the range of 15–21 kV, are between 10 and 15 cm. The composite nanoparticles obtained under these conditions have diameters of 300 and 800 nm [34–36]. In order to better understand the relationship between the electrode distance and the diameter of the obtained fibres, we used two different distances between the nozzle and the collector, namely 12.5 and 20.0 cm. The diameter of the obtained fibres was determined by SEM analysis (Fig. 8).

View Article: PubMed Central - HTML - PubMed

ABSTRACT

The aim of this study was to produce nanocomposite polymer fibres, consisting of a matrix of polyacrylonitrile (PAN) and a reinforcing phase in the form of SiO2/TiO2/Bi2O3 nanoparticles, by electrospinning the solution. The effect of the nanoparticles and the electrospinning process parameters on the morphology and physical properties of the obtained composite nanofibres was then examined. The morphology of the fibres and the dispersion of nanoparticles in their volume were examined using scanning electron microscopy (SEM). All of the physical properties, which included the band gap width, dielectric constant and refractive index, were tested and plotted against the concentration by weight of the used reinforcing phase, which was as follows: 0%, 4%, 8% and 12% for each type of nanoparticles. The width of the band gap was determined on the basis of the absorption spectra of radiation (UV–vis) and ellipsometry methods. Spectroscopic ellipsometry has been used in order to determine the dielectric constant, refractive index and the thickness of the obtained fibrous mats.

No MeSH data available.