| Autor: |
Jalal, Noor M., Jabur, Akram R., Hamza, Mohammed S., Allami, Shrok, Hashim, Jasim Hanoon, Joda, Baker A, Aaber, Zeyad S, Abdulateff, Ahmed Mahmood, Madlool, Thaer Mahdi, Mohammed, Adnan Ibrahim, Nasir, Ibtisam Abbas |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 2020, Vol. 2290 Issue 1, p1-12, 12p |
| Abstrakt: |
Polystyrene micro-fibers (PS) membranes with (20 wt. %) concentration was fabricated by electrospinning technique. Polystyrene micro-fibers membranes were sulfonated at different periods (1, 2, 3, and 4) hr. using 20% diluted sulfuric acid. Sulfonation reaction was used to enhance proton conductivity which is an essential property of electrolytic polymers. Fourier transform infrared spectroscopy (FTIR) used to study the changes in the polymer structure associated with sulfonation time. It was found that the sulfonic acidic group (-SO3H) and (OH) observed in sulfonated membranes as new peaks after sulfonation reaction. Morphological analysis was done by scanning electron microscopy (SEM), it revealed that the diameter of fibers increased with increasing sulfonation time. The presence of sulfur atoms was observed by energy dispersive spectroscopy (EDS) which clearly indicates successful sulfonation process. The results showed that polystyrene membranes sulfonated for 3 hrs. had the maximum physicochemical properties since they had the highest proton conductivity, degree of sulfonation, ion exchange capacity, and water take up. The results obtained from FTIR, SEM, and EDS specified the desulfonating reactions critical time, it was equal to 4 hrs. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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