Impact of Initial Cyclic Loading on Mechanical Properties and Performance of Nafion
Nafion possesses many interesting properties such as a high ion-conductivity, hydrophilicity, and thermal and chemical stability that make this material highly suitable for many applications including fuel cells and various (bio-)chemical and physical sensors. However, the mechanical properties of a...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/23/3/1488 |
| _version_ | 1827759406664646656 |
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| author | David Vokoun Sneha Samal Ivo Stachiv |
| author_facet | David Vokoun Sneha Samal Ivo Stachiv |
| author_sort | David Vokoun |
| collection | DOAJ |
| description | Nafion possesses many interesting properties such as a high ion-conductivity, hydrophilicity, and thermal and chemical stability that make this material highly suitable for many applications including fuel cells and various (bio-)chemical and physical sensors. However, the mechanical properties of a Nafion membrane that are known to be affected by the viscoplastic characteristics of the material itself have a strong impact on the performance of Nafion-based sensors. In this study, the mechanical properties of Nafion under the cyclic loading have been investigated in detail. After cyclic tensile loading (i.e., maximum elongation about 25% at a room temperature and relative humidity about 40%) a time-dependent recovery comes into play. This recovery process is also shown being strain-rate dependent. Our results reveal that the recovery behavior weakens after performing several stress–strain cycles. Present findings can be of a great importance in future design of various chemical and biological microsensors and nanosensors such as hydrogen or glucose ones. |
| first_indexed | 2024-03-11T09:25:00Z |
| format | Article |
| id | doaj.art-2f8a6f083f9349e3a3b6e2224fa6babb |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-11T09:25:00Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-2f8a6f083f9349e3a3b6e2224fa6babb2023-11-16T18:01:47ZengMDPI AGSensors1424-82202023-01-01233148810.3390/s23031488Impact of Initial Cyclic Loading on Mechanical Properties and Performance of NafionDavid Vokoun0Sneha Samal1Ivo Stachiv2Department of Functional Materials, Institute of Physics, Czech Academy of Sciences, Na Slovance 2, 18221 Prague, Czech RepublicDepartment of Functional Materials, Institute of Physics, Czech Academy of Sciences, Na Slovance 2, 18221 Prague, Czech RepublicDepartment of Functional Materials, Institute of Physics, Czech Academy of Sciences, Na Slovance 2, 18221 Prague, Czech RepublicNafion possesses many interesting properties such as a high ion-conductivity, hydrophilicity, and thermal and chemical stability that make this material highly suitable for many applications including fuel cells and various (bio-)chemical and physical sensors. However, the mechanical properties of a Nafion membrane that are known to be affected by the viscoplastic characteristics of the material itself have a strong impact on the performance of Nafion-based sensors. In this study, the mechanical properties of Nafion under the cyclic loading have been investigated in detail. After cyclic tensile loading (i.e., maximum elongation about 25% at a room temperature and relative humidity about 40%) a time-dependent recovery comes into play. This recovery process is also shown being strain-rate dependent. Our results reveal that the recovery behavior weakens after performing several stress–strain cycles. Present findings can be of a great importance in future design of various chemical and biological microsensors and nanosensors such as hydrogen or glucose ones.https://www.mdpi.com/1424-8220/23/3/1488Nafionmechanical testsviscoplastic propertiescyclic loadingmechanical properties |
| spellingShingle | David Vokoun Sneha Samal Ivo Stachiv Impact of Initial Cyclic Loading on Mechanical Properties and Performance of Nafion Sensors Nafion mechanical tests viscoplastic properties cyclic loading mechanical properties |
| title | Impact of Initial Cyclic Loading on Mechanical Properties and Performance of Nafion |
| title_full | Impact of Initial Cyclic Loading on Mechanical Properties and Performance of Nafion |
| title_fullStr | Impact of Initial Cyclic Loading on Mechanical Properties and Performance of Nafion |
| title_full_unstemmed | Impact of Initial Cyclic Loading on Mechanical Properties and Performance of Nafion |
| title_short | Impact of Initial Cyclic Loading on Mechanical Properties and Performance of Nafion |
| title_sort | impact of initial cyclic loading on mechanical properties and performance of nafion |
| topic | Nafion mechanical tests viscoplastic properties cyclic loading mechanical properties |
| url | https://www.mdpi.com/1424-8220/23/3/1488 |
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