Comparison of the Dielectric Properties of Ecoflex<sup>®</sup> with L,D-Poly(Lactic Acid) or Polycaprolactone in the Presence of SWCN or 5CB
The main goal of this paper was to study the dielectric properties of hybrid binary and ternary composites based on biodegradable polymer Ecoflex<sup>®</sup>, single walled carbon nanotubes (SWCN), and liquid crystalline 4′-pentyl-4-biphenylcarbonitrile (5CB) compound. The obtained resul...
| Main Authors: | , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-03-01
|
| Series: | Materials |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1944/14/7/1719 |
| _version_ | 1797539323527036928 |
|---|---|
| author | Patryk Fryń Sebastian Lalik Natalia Górska Agnieszka Iwan Monika Marzec |
| author_facet | Patryk Fryń Sebastian Lalik Natalia Górska Agnieszka Iwan Monika Marzec |
| author_sort | Patryk Fryń |
| collection | DOAJ |
| description | The main goal of this paper was to study the dielectric properties of hybrid binary and ternary composites based on biodegradable polymer Ecoflex<sup>®</sup>, single walled carbon nanotubes (SWCN), and liquid crystalline 4′-pentyl-4-biphenylcarbonitrile (5CB) compound. The obtained results were compared with other created analogically to Ecoflex<sup>®</sup>, hybrid layers based on biodegradable polymers such as L,D-polylactide (L,D-PLA) and polycaprolactone (PCL). Frequency domain dielectric spectroscopy (FDDS) results were analyzed taking into consideration the amount of SWCN, frequency, and temperature. For pure Ecoflex<sup>®</sup>, two relaxation processes (α and β) were identified. It was shown that the SWCN admixture (in the weight ratio 10:0.01) did not change the properties of the Ecoflex<sup>®</sup> layer, while in the case of PCL and L,D-PLA, the layers became conductive. The dielectric constant increased with an increase in the content of SWCN in the Ecoflex<sup>®</sup> matrix and the conductive behavior was not visible, even for the greatest concentration (10:0.06 weight ratio). In the case of the Ecoflex<sup>®</sup> polymer matrix, the conduction relaxation process at a frequency ca. several kilohertz appeared and became stronger with an increase in the SWCN admixture in the matrix. Addition of oleic acid to the polymer matrix had a smaller effect on the increase in the dielectric response than the addition of liquid crystal 5CB. Fourier transform infrared (FTIR) results revealed that the molecular structure and chemical character of the Ecoflex<sup>®</sup> and PCL matrixes remained unchanged upon the addition of SWCN or 5CB in a weight ratio of 10:0.01 and 10:1, respectively, while molecular interactions appeared between L,D-PLA and 5CB. Moreover, adding oleic acid to pure Ecoflex<sup>®</sup> as well as the binary and ternary hybrid layers with SWCN and/or 5CB in a weight ratio of Ecoflex<sup>®</sup>:oleic acid equal to 10:0.3 did not have an influence on the chemical bonding of these materials. |
| first_indexed | 2024-03-10T12:44:21Z |
| format | Article |
| id | doaj.art-472415d9037441ff913a8067ef960f3a |
| institution | Directory Open Access Journal |
| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T12:44:21Z |
| publishDate | 2021-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Materials |
| spelling | doaj.art-472415d9037441ff913a8067ef960f3a2023-11-21T13:37:14ZengMDPI AGMaterials1996-19442021-03-01147171910.3390/ma14071719Comparison of the Dielectric Properties of Ecoflex<sup>®</sup> with L,D-Poly(Lactic Acid) or Polycaprolactone in the Presence of SWCN or 5CBPatryk Fryń0Sebastian Lalik1Natalia Górska2Agnieszka Iwan3Monika Marzec4Institute of Physics, Jagiellonian University, S. Lojasiewicza 11, 30-348 Krakow, PolandInstitute of Physics, Jagiellonian University, S. Lojasiewicza 11, 30-348 Krakow, PolandFaculty of Chemistry, Jagiellonian University, Gronostajowa 2, 30-387 Krakow, PolandFaculty of Security and Safety Research, General Tadeusz Kosciuszko Military University of Land Forces, Czajkowskiego 109 Str., 51-147 Wroclaw, PolandInstitute of Physics, Jagiellonian University, S. Lojasiewicza 11, 30-348 Krakow, PolandThe main goal of this paper was to study the dielectric properties of hybrid binary and ternary composites based on biodegradable polymer Ecoflex<sup>®</sup>, single walled carbon nanotubes (SWCN), and liquid crystalline 4′-pentyl-4-biphenylcarbonitrile (5CB) compound. The obtained results were compared with other created analogically to Ecoflex<sup>®</sup>, hybrid layers based on biodegradable polymers such as L,D-polylactide (L,D-PLA) and polycaprolactone (PCL). Frequency domain dielectric spectroscopy (FDDS) results were analyzed taking into consideration the amount of SWCN, frequency, and temperature. For pure Ecoflex<sup>®</sup>, two relaxation processes (α and β) were identified. It was shown that the SWCN admixture (in the weight ratio 10:0.01) did not change the properties of the Ecoflex<sup>®</sup> layer, while in the case of PCL and L,D-PLA, the layers became conductive. The dielectric constant increased with an increase in the content of SWCN in the Ecoflex<sup>®</sup> matrix and the conductive behavior was not visible, even for the greatest concentration (10:0.06 weight ratio). In the case of the Ecoflex<sup>®</sup> polymer matrix, the conduction relaxation process at a frequency ca. several kilohertz appeared and became stronger with an increase in the SWCN admixture in the matrix. Addition of oleic acid to the polymer matrix had a smaller effect on the increase in the dielectric response than the addition of liquid crystal 5CB. Fourier transform infrared (FTIR) results revealed that the molecular structure and chemical character of the Ecoflex<sup>®</sup> and PCL matrixes remained unchanged upon the addition of SWCN or 5CB in a weight ratio of 10:0.01 and 10:1, respectively, while molecular interactions appeared between L,D-PLA and 5CB. Moreover, adding oleic acid to pure Ecoflex<sup>®</sup> as well as the binary and ternary hybrid layers with SWCN and/or 5CB in a weight ratio of Ecoflex<sup>®</sup>:oleic acid equal to 10:0.3 did not have an influence on the chemical bonding of these materials.https://www.mdpi.com/1996-1944/14/7/1719dielectric spectroscopyFTIRsingle walled carbon nanotubesL,D-poly(lactic acid)polycaprolactoneEcoflex<sup>®</sup> |
| spellingShingle | Patryk Fryń Sebastian Lalik Natalia Górska Agnieszka Iwan Monika Marzec Comparison of the Dielectric Properties of Ecoflex<sup>®</sup> with L,D-Poly(Lactic Acid) or Polycaprolactone in the Presence of SWCN or 5CB Materials dielectric spectroscopy FTIR single walled carbon nanotubes L,D-poly(lactic acid) polycaprolactone Ecoflex<sup>®</sup> |
| title | Comparison of the Dielectric Properties of Ecoflex<sup>®</sup> with L,D-Poly(Lactic Acid) or Polycaprolactone in the Presence of SWCN or 5CB |
| title_full | Comparison of the Dielectric Properties of Ecoflex<sup>®</sup> with L,D-Poly(Lactic Acid) or Polycaprolactone in the Presence of SWCN or 5CB |
| title_fullStr | Comparison of the Dielectric Properties of Ecoflex<sup>®</sup> with L,D-Poly(Lactic Acid) or Polycaprolactone in the Presence of SWCN or 5CB |
| title_full_unstemmed | Comparison of the Dielectric Properties of Ecoflex<sup>®</sup> with L,D-Poly(Lactic Acid) or Polycaprolactone in the Presence of SWCN or 5CB |
| title_short | Comparison of the Dielectric Properties of Ecoflex<sup>®</sup> with L,D-Poly(Lactic Acid) or Polycaprolactone in the Presence of SWCN or 5CB |
| title_sort | comparison of the dielectric properties of ecoflex sup r sup with l d poly lactic acid or polycaprolactone in the presence of swcn or 5cb |
| topic | dielectric spectroscopy FTIR single walled carbon nanotubes L,D-poly(lactic acid) polycaprolactone Ecoflex<sup>®</sup> |
| url | https://www.mdpi.com/1996-1944/14/7/1719 |
| work_keys_str_mv | AT patrykfryn comparisonofthedielectricpropertiesofecoflexsupsupwithldpolylacticacidorpolycaprolactoneinthepresenceofswcnor5cb AT sebastianlalik comparisonofthedielectricpropertiesofecoflexsupsupwithldpolylacticacidorpolycaprolactoneinthepresenceofswcnor5cb AT nataliagorska comparisonofthedielectricpropertiesofecoflexsupsupwithldpolylacticacidorpolycaprolactoneinthepresenceofswcnor5cb AT agnieszkaiwan comparisonofthedielectricpropertiesofecoflexsupsupwithldpolylacticacidorpolycaprolactoneinthepresenceofswcnor5cb AT monikamarzec comparisonofthedielectricpropertiesofecoflexsupsupwithldpolylacticacidorpolycaprolactoneinthepresenceofswcnor5cb |