Fabrication and Characterization of Nanocomposite Flexible Membranes of PVA and Fe<sub>3</sub>O<sub>4</sub>
Composite polymer membranes of poly(vinyl alcohol) (PVA) and iron oxide (Fe<sub>3</sub>O<sub>4</sub>) nanoparticles were produced in this work. X-ray diffraction measurements demonstrated the formation of Fe<sub>3</sub>O<sub>4</sub> nanoparticles of cu...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-12-01
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| Series: | Molecules |
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| Online Access: | https://www.mdpi.com/1420-3049/26/1/121 |
| _version_ | 1797543146095116288 |
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| author | Belal Salah Ahmad I. Ayesh |
| author_facet | Belal Salah Ahmad I. Ayesh |
| author_sort | Belal Salah |
| collection | DOAJ |
| description | Composite polymer membranes of poly(vinyl alcohol) (PVA) and iron oxide (Fe<sub>3</sub>O<sub>4</sub>) nanoparticles were produced in this work. X-ray diffraction measurements demonstrated the formation of Fe<sub>3</sub>O<sub>4</sub> nanoparticles of cubic structures. The nanoparticles were synthesized by a coprecipitation technique and added to PVA solutions with different concentrations. The solutions were then used to generate flexible membranes by a solution casting method. The size and shape of the nanoparticles were investigated using scanning electron microscopy (SEM). The average size of the nanoparticles was <inline-formula><math display="inline"><semantics><mrow><mn>20</mn><mo>±</mo><mn>9</mn></mrow></semantics></math></inline-formula> nm. Raman spectroscopy and Fourier-transform infrared spectroscopy (FTIR) were utilized to investigate the structure of the membranes, as well as their vibration modes. Thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) demonstrated the thermal stability of the membranes and the crystallinity degree. Electrical characteristics of the thin membranes were examined using impedance spectroscopy as a function of the nanoparticles’ concentrations and temperatures. The resistivity of the fabricated flexible membranes was possible to adjust by controlled doping with suitable concentrations of nanoparticles. The activation energy decreased with the nanoparticles’ concentrations due to the increase in charge carriers’ concentrations. Therefore, the fabricated membranes may be applied for practical applications that involve the recycling of nanoparticles for multiple application cycles. |
| first_indexed | 2024-03-10T13:41:31Z |
| format | Article |
| id | doaj.art-508afa9cf0e84b52908eb547d58910ba |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-03-10T13:41:31Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
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| series | Molecules |
| spelling | doaj.art-508afa9cf0e84b52908eb547d58910ba2023-11-21T02:59:47ZengMDPI AGMolecules1420-30492020-12-0126112110.3390/molecules26010121Fabrication and Characterization of Nanocomposite Flexible Membranes of PVA and Fe<sub>3</sub>O<sub>4</sub>Belal Salah0Ahmad I. Ayesh1Department of Math., Stat. and Physics, Qatar University, Doha 2713, QatarDepartment of Math., Stat. and Physics, Qatar University, Doha 2713, QatarComposite polymer membranes of poly(vinyl alcohol) (PVA) and iron oxide (Fe<sub>3</sub>O<sub>4</sub>) nanoparticles were produced in this work. X-ray diffraction measurements demonstrated the formation of Fe<sub>3</sub>O<sub>4</sub> nanoparticles of cubic structures. The nanoparticles were synthesized by a coprecipitation technique and added to PVA solutions with different concentrations. The solutions were then used to generate flexible membranes by a solution casting method. The size and shape of the nanoparticles were investigated using scanning electron microscopy (SEM). The average size of the nanoparticles was <inline-formula><math display="inline"><semantics><mrow><mn>20</mn><mo>±</mo><mn>9</mn></mrow></semantics></math></inline-formula> nm. Raman spectroscopy and Fourier-transform infrared spectroscopy (FTIR) were utilized to investigate the structure of the membranes, as well as their vibration modes. Thermal gravimetric analysis (TGA) and differential scanning calorimetry (DSC) demonstrated the thermal stability of the membranes and the crystallinity degree. Electrical characteristics of the thin membranes were examined using impedance spectroscopy as a function of the nanoparticles’ concentrations and temperatures. The resistivity of the fabricated flexible membranes was possible to adjust by controlled doping with suitable concentrations of nanoparticles. The activation energy decreased with the nanoparticles’ concentrations due to the increase in charge carriers’ concentrations. Therefore, the fabricated membranes may be applied for practical applications that involve the recycling of nanoparticles for multiple application cycles.https://www.mdpi.com/1420-3049/26/1/121nanocompositemetal oxide nanoparticlesflexible membranesFe<sub>3</sub>O<sub>4</sub>PVA |
| spellingShingle | Belal Salah Ahmad I. Ayesh Fabrication and Characterization of Nanocomposite Flexible Membranes of PVA and Fe<sub>3</sub>O<sub>4</sub> Molecules nanocomposite metal oxide nanoparticles flexible membranes Fe<sub>3</sub>O<sub>4</sub> PVA |
| title | Fabrication and Characterization of Nanocomposite Flexible Membranes of PVA and Fe<sub>3</sub>O<sub>4</sub> |
| title_full | Fabrication and Characterization of Nanocomposite Flexible Membranes of PVA and Fe<sub>3</sub>O<sub>4</sub> |
| title_fullStr | Fabrication and Characterization of Nanocomposite Flexible Membranes of PVA and Fe<sub>3</sub>O<sub>4</sub> |
| title_full_unstemmed | Fabrication and Characterization of Nanocomposite Flexible Membranes of PVA and Fe<sub>3</sub>O<sub>4</sub> |
| title_short | Fabrication and Characterization of Nanocomposite Flexible Membranes of PVA and Fe<sub>3</sub>O<sub>4</sub> |
| title_sort | fabrication and characterization of nanocomposite flexible membranes of pva and fe sub 3 sub o sub 4 sub |
| topic | nanocomposite metal oxide nanoparticles flexible membranes Fe<sub>3</sub>O<sub>4</sub> PVA |
| url | https://www.mdpi.com/1420-3049/26/1/121 |
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