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Cited by 55Polymer Nanocomposite Synthesis and IrradiationDielectric materials and actuatorsConducting polymers and applications

Effect of very fine nanoparticle and temperature on the electric and dielectric properties of MC-PbS polymer nanocomposite films

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Mohamad, Azhin H., Abdullah, Omed Gh., Saeed, Salah R.·2020·Results in Physics
DOI 10.1016/j.rinp.2019.102898
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Abstract

Lead sulphide (PbS) nanoparticles with very fine particle sizes were grown within methylcellulose (MC) as a capping agent, using in-situ chemical reduction from aqueous solution, and casting technique with different PbS concentrations. The XRD analysis revealed the decreases in the degree of crystallinity of PNC upon increasing PbS nanoparticles. The electrical and dielectric properties of the prepared polymer nanocomposites (PNCs) have been characterized using electrochemical impedance spectroscopy (EIS). The EIS analysis reveals a positive correlation between AC conductivity and both frequency and temperature for all PbS concentrations. At higher frequency, this correlation was found to have characteristics of Jonscher’s power law. The correlation between frequency exponents and temperature was found to indicate that the conductive mechanism follows the correlated barrier hopping model (CBH). A similar positive relationship between DC conductivity and concentration was also observed. It is found that increasing PbS concentration also increases the dielectric constant and dielectric loss. The lowering of relaxation time is observed with the PbS addition that is in correlation with the AC conductivity results.

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  • Starch consists of many glucose units connected by glycosidic bonds.

    “This carbohydrate consists of many glucose units connected by glycosidic bonds [73].”

    From Resorbable Biomaterials Used for 3D Scaffolds in Tissue Engineering: A Review (2023) · cites this paper as [73]

    The Introduction (page unavailable) lists starch among natural polymers but does not describe its molecular structure. Searches for glucose units and glycosidic bonds found no passage in our copy that addresses how starch is linked. (LLM, conf=0.70)

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Cited by

Sorted by citations

Authors
Mohamad, A. H., Abdullah, O. G., & Saeed, S. R.
Affiliations
  • University of Sulaimani (IQ)
  • Charmo University (IQ)
Corresponding author
Abdullah, Omed Gh.
ORCID
Venue
Results in Physics
Publisher
Elsevier BV
Published
2020-03
Volume
16
Pages
102898
ISSN
2211-3797 (ISSN-L)
DOI
10.1016/j.rinp.2019.102898
OpenAlex
W2998680963
Cited by
55
References
0
Citations by year
2026: 3 · 2025: 6 · 2024: 12 · 2023: 11 · 2022: 7 · 2021: 10 · 2020: 6
FWCI
2.40
Type
journal article
Language
en
Open access
Licence
Locations
  • Results in Physics (publishedVersion, cc-by-nc-nd)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
  • University of Sulaimani – Ministry of Higher Education
  • Scientific Research-KRG
Topics
  • Physical Sciences › Materials Science › Polymers and Plastics › Polymer Nanocomposite Synthesis and Irradiation
  • Physical Sciences › Engineering › Biomedical Engineering › Dielectric materials and actuators
  • Physical Sciences › Materials Science › Polymers and Plastics › Conducting polymers and applications
Keywords
methylcellulose, polymer nanocomposite films, in situ chemical reduction, AC conductivity, dielectric properties, Jonscher power law, correlated barrier hopping, dielectric relaxation, crystallinity, nanoparticle concentration, temperature dependence

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