Exchange Counterion in Polycationic Hydrogels: Tunability of Hydrophobicity, Water State, and Floating Capability for a Floating pH Device
Abstract
:1. Introduction
2. Results and Discussion
2.1. Hydrogel Formation and Its Characterization
2.2. Counterion Exchange Study
2.3. Water State in the Hydrogels
2.4. Wettability of the Hydrogels
2.5. Water Characteristics, Morphology, and Polarity Study
2.6. Floating Capability of the PFO-Based Gel and Its Application as a Microdevice for pH Detection
3. Conclusions
4. Materials and Methods
4.1. Materials
4.2. Hydrogel Preparation
4.3. Anion Exchange
4.4. Methods
Supplementary Materials
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Conflicts of Interest
References
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Sample 1 | [MTAC] mol L−1 | [HEAA] mol L−1 | Crosslink. mol% | DSwNaCl 2 | DSw 3 | σ at Break kPa | ε at Break % |
---|---|---|---|---|---|---|---|
G1-1-Cl | 2 | - | 1.0 | 10.9 | 18.5 | 109.0 ± 10.6 | 40.0 ± 5.6 |
G1-2-Cl | 2 | - | 1.5 | 5.9 | 13.1 | 424.0 ± 30.9 | 20.5 ± 3.8 |
G1-3-Cl | 2 | - | 3.0 | 4.0 | 9.0 | 429.1 ± 28.6 | 13.5 ± 2.6 |
G1-5-Cl | 2 | - | 4.5 | 3.0 | 6.3 | 485.0 ± 50.6 | 11.3 ± 2.2 |
G2-1-Cl | 1 | 1 | 1.0 | 6.7 | 11.0 | 197.8 ± 16.6 | 52.9 ± 6.6 |
G2-2-Cl | 1 | 1 | 2.0 | 4.0 | 7.9 | 420.5 ± 50.9 | 41.3 ± 3.9 |
G2-3-Cl | 1 | 1 | 3.0 | 2.9 | 5.2 | 426.1 ± 28.1 | 28.0 ± 3.6 |
G2-5-Cl | 1 | 1 | 4.5 | 2.1 | 4.9 | 432.7 ± 33.9 | 15.2 ± 4.2 |
Sample Code/ Counter-Anion | CaS | DS | PFO | |||
---|---|---|---|---|---|---|
DSwA 1 | WR 2 % | DSwA 1 | WR 2 % | DSwA 1 | WR 2 % | |
G1-2 | NA | NA | 0.26 | 94.3 | 0.30 | 90.4 |
G1-3 | 1.1 | −9.3 | 0.45 | 82.5 | 0.48 | 81.5 |
G2-1 | 1.1 | −11.2 | 0.40 | 70.9 | 0.22 | 95.2 |
G2-2 | NA | NA | 0.32 | 91.1 | 0.32 | 92.1 |
Sample Code | Counterion Cl | CaS | DS | PFO | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
EWC 1 | Wtf 2 % | Wnf 3% | EWC 1 | Wtf 2 % | Wnf 3 % | EWC 1 | Wtf 2 % | Wnf 3 % | EWC 1 | Wtf 2 % | Wnf 3 % | |
G1-1 | 96.4 | 74.7 | 21.7 | - | - | - | - | - | - | - | ||
G1-2 | 94.0 | 73.6 | 20.4 | - | - | - | 31.7 | 7.3 | 24.5 | 34.8 | 14.7 | 20.1 |
G1-3 | 88.2 | 64.1 | 24.0 | 88.2 | 64.9 | 23.2 | 30.3 | 12.2 | 18.1 | 32.5 | 12.4 | 20.1 |
G1-5 | 83.8 | 59.0 | 24.8 | - | - | - | - | - | - | - | - | - |
G2-1 | 95.5 | 77.0 | 18.5 | 97.0 | 73.6 | 23.4 | 73.3 | 59.7 | 13.6 | 45.5 | 31.8 | 13.6 |
G2-2 | 91.2 | 66.7 | 24.5 | - | - | - | 52.8 | 32.4 | 20.4 | 45.4 | 34.1 | 18.7 |
G2-3 | 87.9 | 66.6 | 21.3 | - | - | - | - | - | - | - | - | - |
G2-5 | 83.8 | 62.1 | 21.7 | - | - | - | - | - | - | - | - | - |
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Danko, M.; Kronekova, Z.; Krupa, I.; Tkac, J.; Matúš, P.; Kasak, P. Exchange Counterion in Polycationic Hydrogels: Tunability of Hydrophobicity, Water State, and Floating Capability for a Floating pH Device. Gels 2021, 7, 109. https://doi.org/10.3390/gels7030109
Danko M, Kronekova Z, Krupa I, Tkac J, Matúš P, Kasak P. Exchange Counterion in Polycationic Hydrogels: Tunability of Hydrophobicity, Water State, and Floating Capability for a Floating pH Device. Gels. 2021; 7(3):109. https://doi.org/10.3390/gels7030109
Chicago/Turabian StyleDanko, Martin, Zuzana Kronekova, Igor Krupa, Jan Tkac, Peter Matúš, and Peter Kasak. 2021. "Exchange Counterion in Polycationic Hydrogels: Tunability of Hydrophobicity, Water State, and Floating Capability for a Floating pH Device" Gels 7, no. 3: 109. https://doi.org/10.3390/gels7030109