Rheological Characterization of Carbopol® Dispersions in Water and in Water/Glycerol Solutions
The influence of the solvent type on the rheological properties of Carbopol ® NF 980 dispersions in water and in water/glycerol solutions is investigated. The material formulation, preparation procedure, common experimental challenges and artifact sources are all addressed. Transient...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-01-01
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| Series: | Fluids |
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| Online Access: | http://www.mdpi.com/2311-5521/4/1/3 |
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| author | Priscilla R. Varges Camila M. Costa Bruno S. Fonseca Mônica F. Naccache Paulo R. de Souza Mendes |
| author_facet | Priscilla R. Varges Camila M. Costa Bruno S. Fonseca Mônica F. Naccache Paulo R. de Souza Mendes |
| author_sort | Priscilla R. Varges |
| collection | DOAJ |
| description | The influence of the solvent type on the rheological properties of Carbopol ® NF 980 dispersions in water and in water/glycerol solutions is investigated. The material formulation, preparation procedure, common experimental challenges and artifact sources are all addressed. Transient and steady-state experiments were performed. For both solvent types, a clearly thixotropic behavior occurs slightly above the yield stress, where the avalanche effect is observed. For larger stresses, thixotropy is always negligible. Among other findings, it is observed that, for a given Carbopol concentration, the dispersion in the more viscous solvent possesses a lower yield stress and moduli, a larger power-law index, and a longer time to reach steady state. |
| first_indexed | 2024-04-12T09:28:49Z |
| format | Article |
| id | doaj.art-31dc7b8a35ef4357b425a13e16a2960a |
| institution | Directory Open Access Journal |
| issn | 2311-5521 |
| language | English |
| last_indexed | 2024-04-12T09:28:49Z |
| publishDate | 2019-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Fluids |
| spelling | doaj.art-31dc7b8a35ef4357b425a13e16a2960a2022-12-22T03:38:25ZengMDPI AGFluids2311-55212019-01-0141310.3390/fluids4010003fluids4010003Rheological Characterization of Carbopol® Dispersions in Water and in Water/Glycerol SolutionsPriscilla R. Varges0Camila M. Costa1Bruno S. Fonseca2Mônica F. Naccache3Paulo R. de Souza Mendes4Department of Mechanical Engineering, Pontifícia Universidade Católica-RJ, Rua Marquês de São Vicente 225, Rio de Janeiro, RJ 22453-900, BrazilDepartment of Mechanical Engineering, Pontifícia Universidade Católica-RJ, Rua Marquês de São Vicente 225, Rio de Janeiro, RJ 22453-900, BrazilDepartment of Mechanical Engineering, Pontifícia Universidade Católica-RJ, Rua Marquês de São Vicente 225, Rio de Janeiro, RJ 22453-900, BrazilDepartment of Mechanical Engineering, Pontifícia Universidade Católica-RJ, Rua Marquês de São Vicente 225, Rio de Janeiro, RJ 22453-900, BrazilDepartment of Mechanical Engineering, Pontifícia Universidade Católica-RJ, Rua Marquês de São Vicente 225, Rio de Janeiro, RJ 22453-900, BrazilThe influence of the solvent type on the rheological properties of Carbopol ® NF 980 dispersions in water and in water/glycerol solutions is investigated. The material formulation, preparation procedure, common experimental challenges and artifact sources are all addressed. Transient and steady-state experiments were performed. For both solvent types, a clearly thixotropic behavior occurs slightly above the yield stress, where the avalanche effect is observed. For larger stresses, thixotropy is always negligible. Among other findings, it is observed that, for a given Carbopol concentration, the dispersion in the more viscous solvent possesses a lower yield stress and moduli, a larger power-law index, and a longer time to reach steady state.http://www.mdpi.com/2311-5521/4/1/3Carbopolyield stressthixotropy |
| spellingShingle | Priscilla R. Varges Camila M. Costa Bruno S. Fonseca Mônica F. Naccache Paulo R. de Souza Mendes Rheological Characterization of Carbopol® Dispersions in Water and in Water/Glycerol Solutions Fluids Carbopol yield stress thixotropy |
| title | Rheological Characterization of Carbopol® Dispersions in Water and in Water/Glycerol Solutions |
| title_full | Rheological Characterization of Carbopol® Dispersions in Water and in Water/Glycerol Solutions |
| title_fullStr | Rheological Characterization of Carbopol® Dispersions in Water and in Water/Glycerol Solutions |
| title_full_unstemmed | Rheological Characterization of Carbopol® Dispersions in Water and in Water/Glycerol Solutions |
| title_short | Rheological Characterization of Carbopol® Dispersions in Water and in Water/Glycerol Solutions |
| title_sort | rheological characterization of carbopol r dispersions in water and in water glycerol solutions |
| topic | Carbopol yield stress thixotropy |
| url | http://www.mdpi.com/2311-5521/4/1/3 |
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