Dielectric, Thermal and Water Absorption Properties of Some EPDM/Flax Fiber Composites
This paper deals with the dielectric and sorption properties of some flax fiber-reinforced ethylene-propylene-diene monomer (EPDM) composites containing different fiber loadings as well as their behavior after exposure to different doses of electron beam irradiation. Three relaxation processes were...
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| Format: | Article |
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MDPI AG
2021-07-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/15/2555 |
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| author | Anton Airinei Mihai Asandulesa Maria Daniela Stelescu Niţǎ Tudorachi Nicusor Fifere Adrian Bele Valentina Musteata |
| author_facet | Anton Airinei Mihai Asandulesa Maria Daniela Stelescu Niţǎ Tudorachi Nicusor Fifere Adrian Bele Valentina Musteata |
| author_sort | Anton Airinei |
| collection | DOAJ |
| description | This paper deals with the dielectric and sorption properties of some flax fiber-reinforced ethylene-propylene-diene monomer (EPDM) composites containing different fiber loadings as well as their behavior after exposure to different doses of electron beam irradiation. Three relaxation processes were evinced, a weak relaxation β at sub-T<sub>g</sub> temperatures and two α-type relaxations above the T<sub>g</sub>. The EPDM/flax composites exhibited higher values of dielectric constant, dielectric loss and conductivity as compared to a pristine EPDM sample. Using thermogravimetric analysis (TG) coupled with Fourier transform infrared spectroscopy (FTIR) and mass spectrometry (MS) (TG/FTIR/MS system), the degradation products can be identified. The water uptake increased as the flax fiber level increased in composites. The water uptake tests of irradiated composites showed that the highest water content was obtained for a flax fiber level of 20 phr. |
| first_indexed | 2024-03-10T09:10:41Z |
| format | Article |
| id | doaj.art-fda71d7a6ebc4585ae51be13e446b67c |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-10T09:10:41Z |
| publishDate | 2021-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-fda71d7a6ebc4585ae51be13e446b67c2023-11-22T06:04:40ZengMDPI AGPolymers2073-43602021-07-011315255510.3390/polym13152555Dielectric, Thermal and Water Absorption Properties of Some EPDM/Flax Fiber CompositesAnton Airinei0Mihai Asandulesa1Maria Daniela Stelescu2Niţǎ Tudorachi3Nicusor Fifere4Adrian Bele5Valentina Musteata6Petru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, RomaniaPetru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, RomaniaNational Research and Development Institute for Textile and Leather, Leather and Footwear Institute, 93 Ion Minulescu Street, 031215 Bucharest, RomaniaPetru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, RomaniaPetru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, RomaniaPetru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, RomaniaPetru Poni Institute of Macromolecular Chemistry, 41A Grigore Ghica Voda Alley, 700487 Iasi, RomaniaThis paper deals with the dielectric and sorption properties of some flax fiber-reinforced ethylene-propylene-diene monomer (EPDM) composites containing different fiber loadings as well as their behavior after exposure to different doses of electron beam irradiation. Three relaxation processes were evinced, a weak relaxation β at sub-T<sub>g</sub> temperatures and two α-type relaxations above the T<sub>g</sub>. The EPDM/flax composites exhibited higher values of dielectric constant, dielectric loss and conductivity as compared to a pristine EPDM sample. Using thermogravimetric analysis (TG) coupled with Fourier transform infrared spectroscopy (FTIR) and mass spectrometry (MS) (TG/FTIR/MS system), the degradation products can be identified. The water uptake increased as the flax fiber level increased in composites. The water uptake tests of irradiated composites showed that the highest water content was obtained for a flax fiber level of 20 phr.https://www.mdpi.com/2073-4360/13/15/2555EPDM rubberdielectric propertieswater uptakerelaxationthermal stabilityIR/TG/MS |
| spellingShingle | Anton Airinei Mihai Asandulesa Maria Daniela Stelescu Niţǎ Tudorachi Nicusor Fifere Adrian Bele Valentina Musteata Dielectric, Thermal and Water Absorption Properties of Some EPDM/Flax Fiber Composites Polymers EPDM rubber dielectric properties water uptake relaxation thermal stability IR/TG/MS |
| title | Dielectric, Thermal and Water Absorption Properties of Some EPDM/Flax Fiber Composites |
| title_full | Dielectric, Thermal and Water Absorption Properties of Some EPDM/Flax Fiber Composites |
| title_fullStr | Dielectric, Thermal and Water Absorption Properties of Some EPDM/Flax Fiber Composites |
| title_full_unstemmed | Dielectric, Thermal and Water Absorption Properties of Some EPDM/Flax Fiber Composites |
| title_short | Dielectric, Thermal and Water Absorption Properties of Some EPDM/Flax Fiber Composites |
| title_sort | dielectric thermal and water absorption properties of some epdm flax fiber composites |
| topic | EPDM rubber dielectric properties water uptake relaxation thermal stability IR/TG/MS |
| url | https://www.mdpi.com/2073-4360/13/15/2555 |
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