Preparation and characterization of poly (vinyl alcohol)/Carboxymethyl Cellulose/ Acrylamide - based membranes for DMFC applications
Mahmoud, A., Abd AlRaheem Abu Saied, M., Naser, A., Fahmy, A. (2023). Preparation and characterization of poly (vinyl alcohol)/Carboxymethyl Cellulose/ Acrylamide - based membranes for DMFC applications. EKB Journal Management System, 66(9), 207-213. doi: 10.21608/ejchem.2023.176338.7218
Atia Mahmoud; Mohamed A Abd AlRaheem Abu Saied; Abdelrahman Naser; Alaa Fahmy. "Preparation and characterization of poly (vinyl alcohol)/Carboxymethyl Cellulose/ Acrylamide - based membranes for DMFC applications". EKB Journal Management System, 66, 9, 2023, 207-213. doi: 10.21608/ejchem.2023.176338.7218
Mahmoud, A., Abd AlRaheem Abu Saied, M., Naser, A., Fahmy, A. (2023). 'Preparation and characterization of poly (vinyl alcohol)/Carboxymethyl Cellulose/ Acrylamide - based membranes for DMFC applications', EKB Journal Management System, 66(9), pp. 207-213. doi: 10.21608/ejchem.2023.176338.7218
Mahmoud, A., Abd AlRaheem Abu Saied, M., Naser, A., Fahmy, A. Preparation and characterization of poly (vinyl alcohol)/Carboxymethyl Cellulose/ Acrylamide - based membranes for DMFC applications. EKB Journal Management System, 2023; 66(9): 207-213. doi: 10.21608/ejchem.2023.176338.7218

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  XML 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 email orcid 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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