Reactive and Functional Polymers, pages 104959
The effect of ultrasonication of polymer solutions on the performance of hybrid perfluorinated sulfonic acid membranes with SiO2 nanoparticles
3
Department of Chemistry and Biochemistry, Mendel University in Brno, Zemedelska 1, CZ, Brno 61300, Czech Republic
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Publication type: Journal Article
Publication date: 2021-06-10
Journal:
Reactive and Functional Polymers
Quartile SCImago
Q1
Quartile WOS
Q1
Impact factor: 5.1
ISSN: 13815148
Materials Chemistry
General Chemistry
Biochemistry
General Chemical Engineering
Polymers and Plastics
Environmental Chemistry
Abstract
Perfluorinated sulfonic acid (PFSA) polymer membranes are widely used as ion-conducting electrolytes in energy-conversion devices. The development of novel hybrid materials containing inorganic dopants offers the route towards optimization of the performance of the PFSA membranes. In this work, the effect of ultrasonic (US) treatment of the PFSA solutions in the presence of SiO 2 nanoparticles on the characteristics of the cast hybrid Nafion+SiO 2 membranes was studied for the first time. Upon ultrasonication of polymer solutions, the length of macromolecules is reduced, and the number of sulfo groups decreases. When polymer solutions are ultrasonicated in the presence of SiO 2 , they experience additional crosslinking due to the interaction of SiO 2 with sulfo groups of the PFSA polymer. As a result, up to 20% of -SO 3 H groups appears to be excluded from the ion-exchange process, and the temperature corresponding to destabilization of ionic clusters is reduced. When a hydrophilic dopant is incorporated within pores, the overall water uptake of the hybrid membranes increases, and their proton conductivity is improved. Maximum conductivity (78.6 mS/cm) at 40°С in the contact with water is observed for the Nafion+1 wt% SiO 2 membrane cast from polymer solutions upon the ultrasonication for 10 min. The membranes preserve their high conductivity at low relative humidity (4.1 mS/cm at 30°С, 30% RH), and this value is 1.7 times higher than that of the pristine Nafion membrane. Hydrogen permeability of the hybrid Nafion+SiO 2 membranes appears to be lower than that of the Nafion membranes by 15%. Hence, US-assisted dispersion of dopant nanoparticles in the PFSA solutions allows preparation of hybrid membranes with improved transport characteristics. • Membranes with improved performance are prepared by ultrasonication of Nafion+SiO 2 - solutions. • Ultrasonication induce polymer degradation and its interaction with dopant. • Upon sonication, proton conductivity of the Nafion+SiO 2 membranes increases by a factor of ~2. • Hydrogen permeability of the hybrid membranes is higher than that of the pristine Nafion. • Mechanic properties of the hybrid membranes are higher than those of pristine Nafion.
Citations by journals
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1
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Polymer
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Polymer
1 publication, 25%
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Inorganic Chemistry Communication
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Inorganic Chemistry Communication
1 publication, 25%
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Membranes
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Membranes
1 publication, 25%
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1
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Citations by publishers
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1
2
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Elsevier
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Elsevier
2 publications, 50%
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Multidisciplinary Digital Publishing Institute (MDPI)
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Multidisciplinary Digital Publishing Institute (MDPI)
1 publication, 25%
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1
2
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Safronova E. et al. The effect of ultrasonication of polymer solutions on the performance of hybrid perfluorinated sulfonic acid membranes with SiO2 nanoparticles // Reactive and Functional Polymers. 2021. p. 104959.
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Safronova E., Yurova P. A., Ashrafi A. M., Chernyak A. V., Khoroshilov A. V., Yaroslavtsev A. B. The effect of ultrasonication of polymer solutions on the performance of hybrid perfluorinated sulfonic acid membranes with SiO2 nanoparticles // Reactive and Functional Polymers. 2021. p. 104959.
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TY - JOUR
DO - 10.1016/j.reactfunctpolym.2021.104959
UR - https://doi.org/10.1016%2Fj.reactfunctpolym.2021.104959
TI - The effect of ultrasonication of polymer solutions on the performance of hybrid perfluorinated sulfonic acid membranes with SiO2 nanoparticles
T2 - Reactive and Functional Polymers
AU - Safronova, Ekaterina
AU - Yurova, Polina A
AU - Ashrafi, Amir M.
AU - Chernyak, Aleksandr V
AU - Khoroshilov, Andrey V
AU - Yaroslavtsev, A. B.
PY - 2021
DA - 2021/06/10 00:00:00
PB - Elsevier
SP - 104959
SN - 1381-5148
ER -
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@article{2021_Safronova,
author = {Ekaterina Safronova and Polina A Yurova and Amir M. Ashrafi and Aleksandr V Chernyak and Andrey V Khoroshilov and A. B. Yaroslavtsev},
title = {The effect of ultrasonication of polymer solutions on the performance of hybrid perfluorinated sulfonic acid membranes with SiO2 nanoparticles},
journal = {Reactive and Functional Polymers},
year = {2021},
publisher = {Elsevier},
month = {jun},
url = {https://doi.org/10.1016%2Fj.reactfunctpolym.2021.104959},
pages = {104959},
doi = {10.1016/j.reactfunctpolym.2021.104959}
}