Structural and Dielectric Properties of Pristine Bentonite-PVC Nanocomposites

Ahmet Uğur Kaya

Makale detayları

Structural and Dielectric Properties of Pristine Bentonite-PVC Nanocomposites

Yazarlar:

Ahmet Uğur Kaya

Yayıncı:

Gazi University

Ana Başlıklar:

Material Physics | Structural Properties of Condensed Matter | Composite and Hybrid Materials

Dergi:

Gazi University Journal of Science Vol.38 Issue 3, pp.1462-1478

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001356597

pISSN:

2147-1762

Anahtar kelimeler:

Özet:

 In this study, the structural and dielectric properties of pristine bentonite-PVC Polyvinyl chloride nanocomposites were systematically investigated. X-ray diffraction XRD and Fourier transform infrared spectroscopy FTIR analyses confirmed the partial intercalation of PVC molecules between the bentonite layers and their interaction with surface hydroxyl groups. The dielectric properties of the nanocomposites were examined via impedance spectroscopy over a broad frequency range of 1 Hz10 MHz. The results revealed that PVC loading significantly influenced dielectric permittivity, dielectric loss, and loss tangent tan δ. At low frequencies 1 kHz, the permittivity and dielectric loss values of 25 mg, 35 mg, and 100 mg PVC-loaded nanocomposites were notably higher compared to pristine bentonite, indicating enhanced interfacial polarization. The relaxation frequency of pristine bentonite was determined to be 39 kHz, which shifted to lower frequencies upon polymer loading due to intercalation and surface interactions. Notably, in the 35 mg PVC-loaded nanocomposite, the relaxation frequency decreased to 12 kHz, suggesting stronger polymer-clay interactions. In addition, AC conductivity σac analyses were performed and successfully fitted with the Jonscher power law, confirming the dominant role of interfacial polarization and dipolar confinement on charge transport behavior. These findings demonstrate that the dielectric behavior of PVC-bentonite nanocomposites is governed by both intercalation and surface interactions, which modulate charge carrier mobility and polarization mechanisms. The integration of structural XRD, FTIR and dielectric impedance spectroscopy analyses provides a comprehensive understanding of the impact of polymer loading on the dielectric performance of bentonite-based nanocomposites.

 In this study, the structural and dielectric properties of pristine bentonite-PVC Polyvinyl chloride nanocomposites were systematically investigated. X-ray diffraction XRD and Fourier transform infrared spectroscopy FTIR analyses confirmed the partial intercalation of PVC molecules between the bentonite layers and their interaction with surface hydroxyl groups. The dielectric properties of the nanocomposites were examined via impedance spectroscopy over a broad frequency range of 1 Hz10 MHz. The results revealed that PVC loading significantly influenced dielectric permittivity, dielectric loss, and loss tangent tan δ. At low frequencies 1 kHz, the permittivity and dielectric loss values of 25 mg, 35 mg, and 100 mg PVC-loaded nanocomposites were notably higher compared to pristine bentonite, indicating enhanced interfacial polarization. The relaxation frequency of pristine bentonite was determined to be 39 kHz, which shifted to lower frequencies upon polymer loading due to intercalation and surface interactions. Notably, in the 35 mg PVC-loaded nanocomposite, the relaxation frequency decreased to 12 kHz, suggesting stronger polymer-clay interactions. In addition, AC conductivity σac analyses were performed and successfully fitted with the Jonscher power law, confirming the dominant role of interfacial polarization and dipolar confinement on charge transport behavior. These findings demonstrate that the dielectric behavior of PVC-bentonite nanocomposites is governed by both intercalation and surface interactions, which modulate charge carrier mobility and polarization mechanisms. The integration of structural XRD, FTIR and dielectric impedance spectroscopy analyses provides a comprehensive understanding of the impact of polymer loading on the dielectric performance of bentonite-based nanocomposites.

 In this study, the structural and dielectric properties of pristine bentonite-PVC Polyvinyl chloride nanocomposites were systematically investigated. X-ray diffraction XRD and Fourier transform infrared spectroscopy FTIR analyses confirmed the partial intercalation of PVC molecules between the bentonite layers and their interaction with surface hydroxyl groups. The dielectric properties of the nanocomposites were examined via impedance spectroscopy over a broad frequency range of 1 Hz10 MHz. The results revealed that PVC loading significantly influenced dielectric permittivity, dielectric loss, and loss tangent tan δ. At low frequencies 1 kHz, the permittivity and dielectric loss values of 25 mg, 35 mg, and 100 mg PVC-loaded nanocomposites were notably higher compared to pristine bentonite, indicating enhanced interfacial polarization. The relaxation frequency of pristine bentonite was determined to be 39 kHz, which shifted to lower frequencies upon polymer loading due to intercalation and surface interactions. Notably, in the 35 mg PVC-loaded nanocomposite, the relaxation frequency decreased to 12 kHz, suggesting stronger polymer-clay interactions. In addition, AC conductivity σac analyses were performed and successfully fitted with the Jonscher power law, confirming the dominant role of interfacial polarization and dipolar confinement on charge transport behavior. These findings demonstrate that the dielectric behavior of PVC-bentonite nanocomposites is governed by both intercalation and surface interactions, which modulate charge carrier mobility and polarization mechanisms. The integration of structural XRD, FTIR and dielectric impedance spectroscopy analyses provides a comprehensive understanding of the impact of polymer loading on the dielectric performance of bentonite-based nanocomposites.

 In this study, the structural and dielectric properties of pristine bentonite-PVC Polyvinyl chloride nanocomposites were systematically investigated. X-ray diffraction XRD and Fourier transform infrared spectroscopy FTIR analyses confirmed the partial intercalation of PVC molecules between the bentonite layers and their interaction with surface hydroxyl groups. The dielectric properties of the nanocomposites were examined via impedance spectroscopy over a broad frequency range of 1 Hz10 MHz. The results revealed that PVC loading significantly influenced dielectric permittivity, dielectric loss, and loss tangent tan δ. At low frequencies 1 kHz, the permittivity and dielectric loss values of 25 mg, 35 mg, and 100 mg PVC-loaded nanocomposites were notably higher compared to pristine bentonite, indicating enhanced interfacial polarization. The relaxation frequency of pristine bentonite was determined to be 39 kHz, which shifted to lower frequencies upon polymer loading due to intercalation and surface interactions. Notably, in the 35 mg PVC-loaded nanocomposite, the relaxation frequency decreased to 12 kHz, suggesting stronger polymer-clay interactions. In addition, AC conductivity σac analyses were performed and successfully fitted with the Jonscher power law, confirming the dominant role of interfacial polarization and dipolar confinement on charge transport behavior. These findings demonstrate that the dielectric behavior of PVC-bentonite nanocomposites is governed by both intercalation and surface interactions, which modulate charge carrier mobility and polarization mechanisms. The integration of structural XRD, FTIR and dielectric impedance spectroscopy analyses provides a comprehensive understanding of the impact of polymer loading on the dielectric performance of bentonite-based nanocomposites.

Makale detayları

Structural and Dielectric Properties of Pristine Bentonite-PVC Nanocomposites

Yazarlar:

Ahmet Uğur Kaya

Yayıncı:

Gazi University

Ana Başlıklar:

Material Physics | Structural Properties of Condensed Matter | Composite and Hybrid Materials

Dergi:

Gazi University Journal of Science Vol.38 Issue 3, pp.1462-1478

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001356597

pISSN:

2147-1762

Bentonite/PVC nanocomposites

Dielectric properties

Intercalation and surface interactions

Electrode polarization

Structural analyses

Sayı

Makale detayları

Structural and Dielectric Properties of Pristine Bentonite-PVC Nanocomposites

Yazarlar: Ahmet Uğur Kaya

Yayıncı: Gazi University

Ana Başlıklar: Material Physics | Structural Properties of Condensed Matter | Composite and Hybrid Materials

Dergi: Gazi University Journal of Science Vol.38 Issue 3, pp.1462-1478

Belge Tipi: Makale

Yayın Tarihi: 1/2025

Belge Dili: İngilizce

Document ID (Org No.): 2001356597

pISSN: 2147-1762

Bentonite/PVC nanocomposites

Dielectric properties

Intercalation and surface interactions

Electrode polarization

Structural analyses

Sayı

Yazarlar:

Ahmet Uğur Kaya

Yayıncı:

Gazi University

Ana Başlıklar:

Material Physics | Structural Properties of Condensed Matter | Composite and Hybrid Materials

Dergi:

Gazi University Journal of Science Vol.38 Issue 3, pp.1462-1478

Belge Tipi:

Makale

Yayın Tarihi:

1/2025

Belge Dili:

İngilizce

Document ID (Org No.):

2001356597

pISSN:

2147-1762