Polymeric Shape-Memory Micro-Patterned Surface for Switching Wettability with Temperature
Abstract
:1. Introduction
2. Experimental Section
2.1. Materials
2.2. Preparation of Samples
2.3. Experimental Methods
2.3.1. Dynamic Mechanical Thermal Analysis
2.3.2. Cyclic Thermomechanical Shape Memory Properties
Experiment | Force (N) | Cooling rate (°C min−1) | Heating rate (°C min−1) |
---|---|---|---|
1 | 1 | 4 | 4 |
2 | 2 | 4 | 4 |
3 | 2.5 | 4 | 4 |
4 | 2.5 | 20 | 4 |
2.3.3. Shape Memory Micropillars
Measured parameters | Initial | Cycle 1 | Cycle 2 | ||
---|---|---|---|---|---|
Deformed | Recovered | Deformed * | Recovered | ||
Height (µm) | 15.9 ± 0.4 | 13.1 ± 0.2 | 15.8 ± 0.4 | 12.0 ± 0.5 | 16.2 ± 0.5 |
Contact angle (°) | 136 ± 1.2 | 124 ± 1.2 | 135 ± 0.5 | 120 ± 1.0 | 136 ± 1.5 |
3. Results and Discussion
3.1. Dynamic Mechanical Thermal Analysis
3.2. Cyclic Thermomechanical Shape Memory Properties
Experiment | Rf (%) | Rr (%) |
---|---|---|
1 | - | 100 |
2 | 65.0 | 100 |
3 | 65.0 | 100 |
4 | 71.2 | 100 |
3.3. Shape Memory Micropillars
4. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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García-Huete, N.; Cuevas, J.M.; Laza, J.M.; Vilas, J.L.; León, L.M. Polymeric Shape-Memory Micro-Patterned Surface for Switching Wettability with Temperature. Polymers 2015, 7, 1674-1688. https://doi.org/10.3390/polym7091477
García-Huete N, Cuevas JM, Laza JM, Vilas JL, León LM. Polymeric Shape-Memory Micro-Patterned Surface for Switching Wettability with Temperature. Polymers. 2015; 7(9):1674-1688. https://doi.org/10.3390/polym7091477
Chicago/Turabian StyleGarcía-Huete, Nuria, José María Cuevas, José Manuel Laza, José Luis Vilas, and Luis Manuel León. 2015. "Polymeric Shape-Memory Micro-Patterned Surface for Switching Wettability with Temperature" Polymers 7, no. 9: 1674-1688. https://doi.org/10.3390/polym7091477