Complex permittivity and power loss characteristics of α-Fe2O3/polycaprolactone (PCL) nanocomposites: effect of recycled α-Fe2O3 nanofiller
The development of microwave absorbing materials based on recycled hematite (α-Fe2O3) nanoparticles and polycaprolactone (PCL) was the main focus of this study. α-Fe2O3 was recycled from mill scale and reduced to nanoparticles through high energy ball milling in order to improve its complex permitti...
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| Format: | Article |
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Elsevier
2020-12-01
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| Series: | Heliyon |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405844020324385 |
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| author | Ebenezer Ekow Mensah Zulkifly Abbas Raba'ah Syahidah Azis Nor Azowa Ibrahim Ahmad Mamoun Khamis Daw Mohammad Abdalhadi |
| author_facet | Ebenezer Ekow Mensah Zulkifly Abbas Raba'ah Syahidah Azis Nor Azowa Ibrahim Ahmad Mamoun Khamis Daw Mohammad Abdalhadi |
| author_sort | Ebenezer Ekow Mensah |
| collection | DOAJ |
| description | The development of microwave absorbing materials based on recycled hematite (α-Fe2O3) nanoparticles and polycaprolactone (PCL) was the main focus of this study. α-Fe2O3 was recycled from mill scale and reduced to nanoparticles through high energy ball milling in order to improve its complex permittivity properties. Different compositions (5% wt., 10% wt., 15% wt. and 20% wt.) of the recycled α-Fe2O3 nanoparticles were melt-blended with PCL using a twin screw extruder to fabricate recycled α-Fe2O3/PCL nanocomposites. The samples were characterized for their microstructural properties through X - ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM). The complex permittivity and microwave absorption properties were respectively measured using the open ended coaxial (OEC) probe and a microstrip in connection with a vector network analyzer in the 1–4 GHz frequency range. An average α-Fe2O3 nanoparticle size of 16.2 nm was obtained with a maximum imaginary (ε'') part of permittivity value of 0.54 at 4 GHz. The complex permittivity and power loss values of the nanocomposites increased with recycled α-Fe2O3 nanofiller content. At 2.4 GHz, the power loss (dB) values obtained for all the nanocomposites were between 13.3 dB and 14.4 dB and at 3.4 GHz, a maximum value of 16.37 dB was achieved for the 20 % wt. nanocomposite. The recycled α-Fe2O3/PCL nanocomposites have the potential for use in noise reduction applications in the 1–4 GHz range. |
| first_indexed | 2024-12-14T14:37:34Z |
| format | Article |
| id | doaj.art-904fd38cade343d1b8801ec124aba1c1 |
| institution | Directory Open Access Journal |
| issn | 2405-8440 |
| language | English |
| last_indexed | 2024-12-14T14:37:34Z |
| publishDate | 2020-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Heliyon |
| spelling | doaj.art-904fd38cade343d1b8801ec124aba1c12022-12-21T22:57:32ZengElsevierHeliyon2405-84402020-12-01612e05595Complex permittivity and power loss characteristics of α-Fe2O3/polycaprolactone (PCL) nanocomposites: effect of recycled α-Fe2O3 nanofillerEbenezer Ekow Mensah0Zulkifly Abbas1Raba'ah Syahidah Azis2Nor Azowa Ibrahim3Ahmad Mamoun Khamis4Daw Mohammad Abdalhadi5Faculty of Science Education, University of Education, Winneba, P. O. Box 40, Mampong, Ashanti, GhanaDepartment of Physics, Faculty of Science, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Corresponding author.Department of Physics, Faculty of Science, Universiti Putra Malaysia, 43400, Serdang, Selangor, Malaysia; Institute of Advanced Materials, Universiti Putra Malaysia, UPM, 43400, Serdang, Selangor, MalaysiaDepartment of Chemistry, Faculty of Science, Universiti Putra Malaysia, 43400, Serdang, Selangor, MalaysiaDepartment of Physics, Faculty of Science, Universiti Putra Malaysia, 43400, Serdang, Selangor, MalaysiaAlasmarya Islamic University (AIU), Zliten, LibyaThe development of microwave absorbing materials based on recycled hematite (α-Fe2O3) nanoparticles and polycaprolactone (PCL) was the main focus of this study. α-Fe2O3 was recycled from mill scale and reduced to nanoparticles through high energy ball milling in order to improve its complex permittivity properties. Different compositions (5% wt., 10% wt., 15% wt. and 20% wt.) of the recycled α-Fe2O3 nanoparticles were melt-blended with PCL using a twin screw extruder to fabricate recycled α-Fe2O3/PCL nanocomposites. The samples were characterized for their microstructural properties through X - ray diffraction (XRD) and high resolution transmission electron microscopy (HRTEM). The complex permittivity and microwave absorption properties were respectively measured using the open ended coaxial (OEC) probe and a microstrip in connection with a vector network analyzer in the 1–4 GHz frequency range. An average α-Fe2O3 nanoparticle size of 16.2 nm was obtained with a maximum imaginary (ε'') part of permittivity value of 0.54 at 4 GHz. The complex permittivity and power loss values of the nanocomposites increased with recycled α-Fe2O3 nanofiller content. At 2.4 GHz, the power loss (dB) values obtained for all the nanocomposites were between 13.3 dB and 14.4 dB and at 3.4 GHz, a maximum value of 16.37 dB was achieved for the 20 % wt. nanocomposite. The recycled α-Fe2O3/PCL nanocomposites have the potential for use in noise reduction applications in the 1–4 GHz range.http://www.sciencedirect.com/science/article/pii/S2405844020324385Recycled hematiteComplex permittivityNanocompositesPower lossFinite element methodNanomaterials |
| spellingShingle | Ebenezer Ekow Mensah Zulkifly Abbas Raba'ah Syahidah Azis Nor Azowa Ibrahim Ahmad Mamoun Khamis Daw Mohammad Abdalhadi Complex permittivity and power loss characteristics of α-Fe2O3/polycaprolactone (PCL) nanocomposites: effect of recycled α-Fe2O3 nanofiller Heliyon Recycled hematite Complex permittivity Nanocomposites Power loss Finite element method Nanomaterials |
| title | Complex permittivity and power loss characteristics of α-Fe2O3/polycaprolactone (PCL) nanocomposites: effect of recycled α-Fe2O3 nanofiller |
| title_full | Complex permittivity and power loss characteristics of α-Fe2O3/polycaprolactone (PCL) nanocomposites: effect of recycled α-Fe2O3 nanofiller |
| title_fullStr | Complex permittivity and power loss characteristics of α-Fe2O3/polycaprolactone (PCL) nanocomposites: effect of recycled α-Fe2O3 nanofiller |
| title_full_unstemmed | Complex permittivity and power loss characteristics of α-Fe2O3/polycaprolactone (PCL) nanocomposites: effect of recycled α-Fe2O3 nanofiller |
| title_short | Complex permittivity and power loss characteristics of α-Fe2O3/polycaprolactone (PCL) nanocomposites: effect of recycled α-Fe2O3 nanofiller |
| title_sort | complex permittivity and power loss characteristics of α fe2o3 polycaprolactone pcl nanocomposites effect of recycled α fe2o3 nanofiller |
| topic | Recycled hematite Complex permittivity Nanocomposites Power loss Finite element method Nanomaterials |
| url | http://www.sciencedirect.com/science/article/pii/S2405844020324385 |
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