Effect of very fine nanoparticle and temperature on the electric and dielectric properties of MC-PbS polymer nanocomposite films
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 crystal...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2020-03-01
|
| Series: | Results in Physics |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2211379719333200 |
| _version_ | 1819012224881000448 |
|---|---|
| author | Azhin H. Mohamad Omed Gh. Abdullah Salah R. Saeed |
| author_facet | Azhin H. Mohamad Omed Gh. Abdullah Salah R. Saeed |
| author_sort | Azhin H. Mohamad |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-12-21T01:40:40Z |
| format | Article |
| id | doaj.art-05ddc4c3b54949a9bd420c17fab59154 |
| institution | Directory Open Access Journal |
| issn | 2211-3797 |
| language | English |
| last_indexed | 2024-12-21T01:40:40Z |
| publishDate | 2020-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Physics |
| spelling | doaj.art-05ddc4c3b54949a9bd420c17fab591542022-12-21T19:20:10ZengElsevierResults in Physics2211-37972020-03-0116102898Effect of very fine nanoparticle and temperature on the electric and dielectric properties of MC-PbS polymer nanocomposite filmsAzhin H. Mohamad0Omed Gh. Abdullah1Salah R. Saeed2Department of Physics, College of Education, University of Sulaimani, 46001 Kurdistan Region, IraqAdvanced Materials Research Lab., Department of Physics, College of Science, University of Sulaimani, 46001 Kurdistan Region, Iraq; Corresponding author.Charmo Research Center, Training & Consultancy, Charmo University, 46023 Chamchamal – Sulaimani, Kurdistan Region, IraqLead 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.http://www.sciencedirect.com/science/article/pii/S2211379719333200Polymer nanocompositeLead sulfide nanoparticleConductivityActivation energyLoss tangent |
| spellingShingle | Azhin H. Mohamad Omed Gh. Abdullah Salah R. Saeed Effect of very fine nanoparticle and temperature on the electric and dielectric properties of MC-PbS polymer nanocomposite films Results in Physics Polymer nanocomposite Lead sulfide nanoparticle Conductivity Activation energy Loss tangent |
| title | Effect of very fine nanoparticle and temperature on the electric and dielectric properties of MC-PbS polymer nanocomposite films |
| title_full | Effect of very fine nanoparticle and temperature on the electric and dielectric properties of MC-PbS polymer nanocomposite films |
| title_fullStr | Effect of very fine nanoparticle and temperature on the electric and dielectric properties of MC-PbS polymer nanocomposite films |
| title_full_unstemmed | Effect of very fine nanoparticle and temperature on the electric and dielectric properties of MC-PbS polymer nanocomposite films |
| title_short | Effect of very fine nanoparticle and temperature on the electric and dielectric properties of MC-PbS polymer nanocomposite films |
| title_sort | effect of very fine nanoparticle and temperature on the electric and dielectric properties of mc pbs polymer nanocomposite films |
| topic | Polymer nanocomposite Lead sulfide nanoparticle Conductivity Activation energy Loss tangent |
| url | http://www.sciencedirect.com/science/article/pii/S2211379719333200 |
| work_keys_str_mv | AT azhinhmohamad effectofveryfinenanoparticleandtemperatureontheelectricanddielectricpropertiesofmcpbspolymernanocompositefilms AT omedghabdullah effectofveryfinenanoparticleandtemperatureontheelectricanddielectricpropertiesofmcpbspolymernanocompositefilms AT salahrsaeed effectofveryfinenanoparticleandtemperatureontheelectricanddielectricpropertiesofmcpbspolymernanocompositefilms |