Influence of Sonication on the Molecular Characteristics of Carbopol® and Its Rheological Behavior in Microgels
Abstract
:1. Introduction
2. Results and Discussion
2.1. Rheological Behavior of Non-Sonicated and Sonicated Microgels: Small Amplitude Oscillatory Shear Measurements
2.2. Rheological Behavior of Non-Sonicated and Sonicated Microgels: Steady Shear Measurements
2.3. Rheometry of the Sonicated Ultrez 10 Dispersion and Its Microgel
2.4. Molecular Weight Measurements and FTIR of Ultrez 10 before and after Sonication
2.5. Confocal Microscopy of Non-Sonicated and Sonicated Ultrez 10 Microgels
3. Conclusions
4. Materials and Methods
4.1. Rheological Characterization
4.2. Determination of Weight-Average Molecular Weight (Mw) of Ultrez 10
4.3. Confocal Microscopy
4.4. Fourier Transform Infrared Spectroscopy
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Microgels | σy [Pa] | m [Pa·sn] | n [1] |
---|---|---|---|
SM0 | 37.2 | 19.2 | 0.37 |
SM60 | 31.6 | 16.0 | 0.38 |
SM120 | 26.4 | 14.0 | 0.37 |
SM180 | 19.6 | 12.6 | 0.39 |
SMD180 * | 20.5 | 11.7 | 0.40 |
Sample | c [mg/mL] | 0.00 | 0.25 | 0.50 | 0.75 | 1.00 | 1.50 | 2.00 |
---|---|---|---|---|---|---|---|---|
SD0 | n [1] | 1.332485 | 1.332651 | 1.332753 | 1.332858 | 1.332983 | 1.333245 | 1.333540 |
Kc/Rθ [mol/g] | -- | -- | 4.4712 × 10−6 | 4.703 × 10−6 | 5.35064 × 10−6 | 6.26993 × 10−6 | 7.44143 × 10−6 | |
SD180 | n [1] | 1.332485 | 1.332605 | 1.332699 | 1.332845 | 1.332961 | 1.333205 | 1.333480 |
Kc/Rθ [mol/g] | -- | -- | 8.6022 × 10−6 | 8.5915 × 10−6 | 8.41236 × 10−6 | 7.67077 × 10−6 | 7.44605 × 10−6 |
SD0 | SD180 | ||
---|---|---|---|
Mw [g/mol] | A2 [mol·cm3/g2] | Mw [g/mol] | A2 [mol·cm3/g2] |
300,860 | 1.0102 × 10−3 | 109,212 | −4.3999 × 10−4 |
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Pérez-González, J.; Muñoz-Castro, Y.; Rodríguez-González, F.; Marín-Santibáñez, B.M.; Medina-Bañuelos, E.F. Influence of Sonication on the Molecular Characteristics of Carbopol® and Its Rheological Behavior in Microgels. Gels 2024, 10, 420. https://doi.org/10.3390/gels10070420
Pérez-González J, Muñoz-Castro Y, Rodríguez-González F, Marín-Santibáñez BM, Medina-Bañuelos EF. Influence of Sonication on the Molecular Characteristics of Carbopol® and Its Rheological Behavior in Microgels. Gels. 2024; 10(7):420. https://doi.org/10.3390/gels10070420
Chicago/Turabian StylePérez-González, José, Yusef Muñoz-Castro, Francisco Rodríguez-González, Benjamín M. Marín-Santibáñez, and Esteban F. Medina-Bañuelos. 2024. "Influence of Sonication on the Molecular Characteristics of Carbopol® and Its Rheological Behavior in Microgels" Gels 10, no. 7: 420. https://doi.org/10.3390/gels10070420