Abdulwahid, Rebar T. and Aziz, Shujahadeen Bakr and Abdul Kadir, Mohd Fakhrul Zamani (2022) Design of proton conducting solid biopolymer blend electrolytes based on chitosan-potato starch biopolymers: Deep approaches to structural and ion relaxation dynamics of H+ ion. Journal of Applied Polymer Science, 139 (37). ISSN 0021-8995, DOI https://doi.org/10.1002/app.52892.
Full text not available from this repository.Abstract
The need for flexible energy storage devices for advanced technologies has encouraged researchers to focus on environmental-friendly biopolymers. In this work, chitosan (CS) and potato starch (PS) biopolymers are blended to prepare proton conducting solid electrolytes. Based on the X-ray diffraction (XRD) inspection, the most amorphous blended film with the lowest crystallinity degree was selected to prepare polymer electrolytes. The variation in Fourier-transform infrared spectroscopy (FTIR) bands were used to investigate the occurrence of interactions among the ammonium thiocyanate (NH4SCN) salt and CS:PS polymer blends. The experimental results of electrochemical impedance spectroscopy (EIS) were simulated with electrical equivalent circuit (EEC) modeling to determine the circuit elements. The highest value of 1.07x10-5$$ 1.07\textbackslashtimes {10}<\^>{-5} $$ S cm(-1) was recorded for the sample included 40 wt.% of dopant salt. The dielectric analyses were helpful in separating the regions ascribed to electrode and molecular polarizations. The combination of circuit elements achieved from the EEC modeling and Koops phenomenological interpretation is used to understand the behavior of the loss tangent (tan delta) pattern. The AC conductivity pattern followed Jonscher's power law. The relaxation dynamics interrelated with ions is explained using electric modulus approaches. The peaks hidden in the dielectric loss (epsilon `'$$ {\textbackslashvarepsilon}<\^>{\textbackslashprime \textbackslashprime } $$) spectra, were manifested in the imaginary part of electric modulus (M `'$$ {M}<\^>{\textbackslashprime \textbackslashprime } $$) pattern. The M `$$ {M}<\^>{\textbackslashprime } $$-M `'$$ {M}<\^>{\textbackslashprime \textbackslashprime } $$ patterns were used to shed light on the coupling between ionic motion and polymer chain dyna
| Item Type: | Article |
|---|---|
| Funders: | University of Sulaimani, National Research Council, Ministry of Higher Education & Scientific Research (MHESR) |
| Uncontrolled Keywords: | Analysis; Biodegradable polymer; Dielectric relaxation process; EEC modeling; Electrolyte; Impedance; Ionic conductivity; Structural (XRD and FTIR) |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Science |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 22 Sep 2023 02:34 |
| Last Modified: | 22 Sep 2023 02:34 |
| URI: | http://eprints.um.edu.my/id/eprint/41412 |
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