Tuning the Properties of Xylan/Chitosan-Based Films by Temperature and Citric Acid Crosslinking Agent
Abstract
:1. Introduction
2. Materials and Methods
2.1. Xylan
2.2. Chitosan
2.3. Citric Acid and Sodium Hypophosphite
2.4. Preparation of Xyl/Ch PEC Suspensions in the Presence of Citric Acid and Sodium Hypophosphite
2.5. Determination of Particle Size and Z-Potential Values of PECs
2.6. Preparation of Xyl/Ch Films and Crosslinking
2.7. Washing Step
2.8. FTIR Spectroscopy
2.9. Confocal Raman Microscopy
2.10. UV-vis Light Transmittance
2.11. Mechanical Film Properties
2.12. Swelling Behavior, Solubility, and Equilibrium Moisture Content
2.13. Thermal Gravimetric Analysis
2.14. Scanning Electron Microscopy (SEM)
2.15. Contact Angle
2.16. Statistical Analysis
3. Results
3.1. Z-Potential and Average Particle Size
3.2. FTIR Analysis
3.3. Mechanical Properties
3.3.1. Dry State
3.3.2. Wet State
3.4. Swelling and Solubility
3.5. Characterization of Films Thermally Treated at 155 °C
3.5.1. Confocal Raman Microscopy Analysis
3.5.2. UV Barrier and Opacity Properties
3.5.3. SEM Microscopy Analysis
3.5.4. Surface Wettability
3.5.5. Thermal Stability
4. Conclusions
Supplementary Materials
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Identification | Z-Potential (mV) | Average Particle Size (nm) | PDI | meq(+)/g PEC |
---|---|---|---|---|
0% CA | 37.15 ± 0.46 | 1078 ± 24 | 0.271 ± 0.030 | 0.99 |
2.5% CA | 35.52 ± 0.76 | 1037 ± 27 | 0.286 ± 0.030 | 0.83 |
5% CA | 34.11 ± 0.53 | 921 ± 27 | 0.217 ± 0.030 | 0.68 |
7.5% CA | 30.05 ± 0.26 | 876 ± 17 | 0.239 ± 0.040 | 0.54 |
Identification | Tonset (°C) | Tdeg (°C) | Tendset (°C) | Wresidual (%) |
---|---|---|---|---|
Reference | 224 | 246 | 280 | 4.6 |
0% CA—30 min | 224 | 247 | 293 | 28.4 |
2.5% CA—30 min | 229 | 250 | 285 | 11.0 |
5% CA—30 min | 230 | 254 | 289 | 27.2 |
7.5% CA—30 min | 230 | 250 | 280 | 13.9 |
0% CA—60 min | 231 | 255 | 295 | 29.8 |
2.5% CA—60 min | 231 | 255 | 302 | 31.0 |
5% CA—60 min | 229 | 246 | 289 | 31.7 |
7.5% CA—60 min | 231 | 252 | 282 | 9.7 |
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Camaño Erhardt, M.; Solier, Y.N.; Inalbon, M.C.; Mocchiutti, P. Tuning the Properties of Xylan/Chitosan-Based Films by Temperature and Citric Acid Crosslinking Agent. Polymers 2024, 16, 2407. https://doi.org/10.3390/polym16172407
Camaño Erhardt M, Solier YN, Inalbon MC, Mocchiutti P. Tuning the Properties of Xylan/Chitosan-Based Films by Temperature and Citric Acid Crosslinking Agent. Polymers. 2024; 16(17):2407. https://doi.org/10.3390/polym16172407
Chicago/Turabian StyleCamaño Erhardt, Martina, Yamil Nahún Solier, María Cristina Inalbon, and Paulina Mocchiutti. 2024. "Tuning the Properties of Xylan/Chitosan-Based Films by Temperature and Citric Acid Crosslinking Agent" Polymers 16, no. 17: 2407. https://doi.org/10.3390/polym16172407