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α-MoO3 nanobelts/CMC-PVA nanocomposites: hybrid materials for optoelectronic and dielectric applications.

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Title: α-MoO3 nanobelts/CMC-PVA nanocomposites: hybrid materials for optoelectronic and dielectric applications.
Authors: Al-Muntaser, A. A.1 (AUTHOR) almuntser2015@gmail.com, Pashameah, Rami Adel2 (AUTHOR), Sharma, Kamal3 (AUTHOR), Alzahrani, Eman4 (AUTHOR), Farea, M. O.5 (AUTHOR), Morsi, M. A.6,7 (AUTHOR)
Source: Journal of Polymer Research. Jul2022, Vol. 29 Issue 7, p1-11. 11p.
Subjects: Hybrid materials, Nanocomposite materials, Dielectric materials, Carboxymethylcellulose, Polymeric nanocomposites, Polymer blends, Manganite, Polyvinyl alcohol
Abstract: Polymer nanocomposites (PNCs) of Carboxymethyl cellulose (CMC)/Polyvinyl alcohol (PVA) incorporated with various quantities of MoO3 nanobelts were prepared via a casting technique. The XRD patterns depicted the orthorhombic structure of MoO3 NBs with an average crystallite size of 75.82 nm, and the crystallinity degree of nanocomposite samples significantly decreased after loading MoO3 nanobelts. The TEM image shows a nanobelt-like morphology of MoO3 powder. The ATR-FTIR spectra of the prepared PNCs established the strong interaction between CMC/PVA polymer blend and MoO3 NBs. From the spectra of the UV–Vis-NIR technique, the optical parameters of the CMC/PVA matrix could be adjusted by the NBs addition, where the optical band gap (direct and indirect) and refractive index were calculated and discussed. The dielectric dispersion and relaxation processes of CMC/PVA/MoO3 were tested over the frequency range from 0.1 Hz to 20 MHz at RT. Improved values of ε′ and ε″ for the films after adding MoO3 NBs are due to the increment in the effective parallel ordering of dipoles, resulting in increased dielectric polarization. The conductivity was enhanced after loading the MoO3 NBs owing to the improvement in the charge carriers. The frequency exponent (s) value was used to identify the conduction model in the prepared samples as a correlated barrier hopping one. These results are predicted to have a significant impact on a wide range of electric and optoelectronic applications including separators in batteries, flexible capacitors, and energy storage devices. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Polymer Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: α-MoO<subscript>3</subscript> nanobelts/CMC-PVA nanocomposites: hybrid materials for optoelectronic and dielectric applications.
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  Data: <searchLink fieldCode="DE" term="%22Hybrid+materials%22">Hybrid materials</searchLink><br /><searchLink fieldCode="DE" term="%22Nanocomposite+materials%22">Nanocomposite materials</searchLink><br /><searchLink fieldCode="DE" term="%22Dielectric+materials%22">Dielectric materials</searchLink><br /><searchLink fieldCode="DE" term="%22Carboxymethylcellulose%22">Carboxymethylcellulose</searchLink><br /><searchLink fieldCode="DE" term="%22Polymeric+nanocomposites%22">Polymeric nanocomposites</searchLink><br /><searchLink fieldCode="DE" term="%22Polymer+blends%22">Polymer blends</searchLink><br /><searchLink fieldCode="DE" term="%22Manganite%22">Manganite</searchLink><br /><searchLink fieldCode="DE" term="%22Polyvinyl+alcohol%22">Polyvinyl alcohol</searchLink>
– Name: Abstract
  Label: Abstract
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  Data: Polymer nanocomposites (PNCs) of Carboxymethyl cellulose (CMC)/Polyvinyl alcohol (PVA) incorporated with various quantities of MoO3 nanobelts were prepared via a casting technique. The XRD patterns depicted the orthorhombic structure of MoO3 NBs with an average crystallite size of 75.82 nm, and the crystallinity degree of nanocomposite samples significantly decreased after loading MoO3 nanobelts. The TEM image shows a nanobelt-like morphology of MoO3 powder. The ATR-FTIR spectra of the prepared PNCs established the strong interaction between CMC/PVA polymer blend and MoO3 NBs. From the spectra of the UV–Vis-NIR technique, the optical parameters of the CMC/PVA matrix could be adjusted by the NBs addition, where the optical band gap (direct and indirect) and refractive index were calculated and discussed. The dielectric dispersion and relaxation processes of CMC/PVA/MoO3 were tested over the frequency range from 0.1 Hz to 20 MHz at RT. Improved values of ε′ and ε″ for the films after adding MoO3 NBs are due to the increment in the effective parallel ordering of dipoles, resulting in increased dielectric polarization. The conductivity was enhanced after loading the MoO3 NBs owing to the improvement in the charge carriers. The frequency exponent (s) value was used to identify the conduction model in the prepared samples as a correlated barrier hopping one. These results are predicted to have a significant impact on a wide range of electric and optoelectronic applications including separators in batteries, flexible capacitors, and energy storage devices. [ABSTRACT FROM AUTHOR]
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  Label:
  Group: Ab
  Data: <i>Copyright of Journal of Polymer Research is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1007/s10965-022-03134-y
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        Text: English
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      – SubjectFull: Hybrid materials
        Type: general
      – SubjectFull: Nanocomposite materials
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      – SubjectFull: Dielectric materials
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      – SubjectFull: Carboxymethylcellulose
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      – SubjectFull: Polyvinyl alcohol
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              Text: Jul2022
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