Enhancing H+ conduction through glycolic acid-doped alginate-PVA based biopolymer electrolytes
This study investigates the development of a biopolymer blend electrolyte composed of alginate and poly (vinyl alcohol) (PVA), doped with glycolic acid (GA) to enhance H+ conductivity. The addition of GA significantly impacts the biopolymer blend's physicochemical properties and ionic conductio...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English English |
| Published: |
Elsevier Ltd
2024
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| Subjects: | |
| Online Access: | http://umpir.ump.edu.my/id/eprint/42954/1/Enhancing%20H%2B%20conduction%20through%20glycolic%20acid-doped%20alginate-PVA%20based%20biopolymer%20electrolytes_ABST.pdf http://umpir.ump.edu.my/id/eprint/42954/2/Enhancing%20H%2B%20conduction%20through%20glycolic%20acid-doped%20alginate-PVA%20based%20biopolymer%20electrolytes.pdf |
| Summary: | This study investigates the development of a biopolymer blend electrolyte composed of alginate and poly (vinyl alcohol) (PVA), doped with glycolic acid (GA) to enhance H+ conductivity. The addition of GA significantly impacts the biopolymer blend's physicochemical properties and ionic conduction performance. Fourier transform infrared (FTIR) spectroscopy verified the intricate interactions and hydrogen bonding between the alginate-PVA matrix and GA. The addition of GA was shown to increase the amorphous phase, as observed through X-ray diffraction (XRD) and scanning electron microscopy (SEM) analysis. This increase in the amorphous phase was found to enhance the thermal stability. Impedance analysis demonstrated a significant increase in ionic conductivity from approximately ∼10⁻⁸ S cm⁻1 for the undoped blend to 3.45 × 10⁻⁵ S cm⁻1 with 30 wt% GA (sample GA-30). The enhanced H+ conduction behaviour was consistent across various temperatures, adhering to the Arrhenius rule. These findings suggest that the alginate-PVA-GA system is a promising candidate for efficient proton transport applications. |
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