Preparation of Wide-Domain pH Color-Changing Nanocapsules and Application in Hydrogel Fibers
Abstract
:1. Introduction
2. Materials and Methods
2.1. Materials
2.2. Preparation of Nanocapsules
2.3. Characterization Method
2.3.1. Scanning Electron Microscopy
2.3.2. Fourier Transform Infrared Spectroscopy (FTIR)
2.3.3. Particle Size and Distribution Test
2.3.4. Zeta Potential Test
2.3.5. Encapsulation Efficiency (EE%)
2.3.6. pH Color-Changing Responsiveness Test
2.3.7. Statistical Analysis
3. Results and Discussion
3.1. Formation Principle of the Nanocapsules
3.2. Microscopic Morphology and Structure
3.3. FTIR Analysis of the Nanocapsules
3.4. Particle Size and Distribution
3.4.1. Effect of the Flow Rate
3.4.2. Effect of the Core-to-Wall Ratio
3.4.3. Effect of Mixed Solution Concentration
3.5. Dispersion Stability of Nanocapsules
3.6. Encapsulation Efficiency (EE%)
3.7. Color Responsiveness of pH
4. Application of Sodium Alginate Hydrogel Fibers
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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pH | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 |
---|---|---|---|---|---|---|---|---|
Colors displayed | ||||||||
H-value (°) | 54.0 | 61.6 | 67.8 | 92.5 | 95.4 | 207.1 | 213.7 | 218.1 |
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Hou, X.; Zhao, H.; Zhang, K.-Q.; Meng, K. Preparation of Wide-Domain pH Color-Changing Nanocapsules and Application in Hydrogel Fibers. Materials 2022, 15, 8787. https://doi.org/10.3390/ma15248787
Hou X, Zhao H, Zhang K-Q, Meng K. Preparation of Wide-Domain pH Color-Changing Nanocapsules and Application in Hydrogel Fibers. Materials. 2022; 15(24):8787. https://doi.org/10.3390/ma15248787
Chicago/Turabian StyleHou, Xuemei, Huijing Zhao, Ke-Qin Zhang, and Kai Meng. 2022. "Preparation of Wide-Domain pH Color-Changing Nanocapsules and Application in Hydrogel Fibers" Materials 15, no. 24: 8787. https://doi.org/10.3390/ma15248787