Open Access

ARTICLE

Immittance Response Alginate-Polyvinyl Alcohol Bio-Polymer Blend Electrolytes Doped with Ammonium Iodide

M. A. H. Nizam¹, A. F. Fuzlin^1,2, A. S. Samsudin^1,2,*

1 Ionic Materials Team, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, Kuantan, 26300, Pahang, Malaysia
2 Centre for Advanced Intelligent Materials, Faculty of Industrial Sciences & Technology, Universiti Malaysia Pahang Al-Sultan Abdullah, Kuantan, 26300, Pahang, Malaysia

* Corresponding Author: A. S. Samsudin. Email:

Journal of Polymer Materials 2025, 42(1), 173-185. https://doi.org/10.32604/jpm.2025.059244

Received 01 October 2024; Accepted 16 December 2024; Issue published 27 March 2025

Abstract

This work explores the dielectric and electrochemical properties of solid biopolymer blend electrolytes (SBEs) based on a combination of alginate and polyvinyl alcohol (PVA), doped with varying concentrations of ammonium iodide (NH₄I). The SBEs were synthesized using the solution casting method, and their ac conductivity exhibited an optimal value of 1.01 × 10⁻⁵ S · cm⁻¹ at 25 wt.% NH₄I. Detailed dielectric and modulus spectroscopy analyses revealed distinctive trends in relation to NH₄I concentration, suggesting complex dielectric relaxation behavior. The universal power law (UPL) analysis identified the Small Polaron Hopping (SPH) mechanism as the dominant conduction process in the optimal sample. These results demonstrate that NH₄I-doped alginate-PVA SBEs possess favorable electrochemical properties, positioning them as potential candidates for energy storage and ionic transport devices.

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Keywords

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