Preparation and characterization of poly (vinyl alcohol)/Carboxymethyl Cellulose/ Acrylamide - based membranes for DMFC applications | ||||
Egyptian Journal of Chemistry | ||||
Volume 66, Issue 9, September 2023, Page 207-213 PDF (1.4 MB) | ||||
Document Type: Original Article | ||||
DOI: 10.21608/ejchem.2023.176338.7218 | ||||
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Authors | ||||
Atia Mahmoud1; Mohamed A Abd AlRaheem Abu Saied2; Abdelrahman Naser3; Alaa Fahmy 4 | ||||
1Chemistry Department, Faculty of Science, Al-Azhar University, 11884 Cairo, Egypt | ||||
2City of Scientific Research and Technological Applications (SRTA-City) | ||||
3Al Azhar University | ||||
4Chemistry Department, Faculty of Science, Al-Azhar University, Cairo, Egypt | ||||
Abstract | ||||
Blending polyvinyl alcohol (PVA) -Carboxy methyl cellulose (CMC) - Acrylamide (AA) membranes are prepared and crosslinked using succinic acid and investigated it as a polymer electrolyte membrane (PEM) in direct methanol fuel cell (DMFC). The membranes were prepared through the solution casting technique. The effect of different blend addition on physicochemical properties was studied. Scanning electron microscopy (SEM) was used to study the morphological structure, which indicated that no phase separation or cracks and good component compatibility. Chemical interaction between PVA, CMC, and AA was confirmed using Fourier transform infrared (FT-IR) in which the four characteristic absorption bands at 572, 1414, 3302 and 3411 cm-1 which confirm the presence of -NCO-, -COO-, -OH and -NH2, respectively. Furthermore, mechanical strength, water uptake, gel fraction, and ion exchange capacity (IEC) were determined as functions of varied membrane components. The results revealed that the addition of CMC and AA improves mechanical strength, IEC and protonic conductivity that reached 23.41 MPa, 0.11 mmol/g and 1×10-3 S/cm, respectively. Such results enhance the potential feasibility of PVA/CMC/AA hybrid polyelectrolytic membranes for DMFC application. | ||||
Keywords | ||||
polyvinyl alcohol; carboxymethyl cellulose; acrylamide; direct methanol fuel cell; polyelectrolyte membrane | ||||
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