Rheological insights on the evolution of sonicated cellulose nanocrystal dispersions
Cellulose nanocrystals (CNCs) are promising biomaterials, but their tendency to agglomerate when dried limits their use in several applications. Ultrasonication is commonly used to disperse CNCs in water, bringing enough energy to the suspension to break agglomerates. While the optimized parameters...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2021-10-01
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| Series: | Ultrasonics Sonochemistry |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S1350417721002893 |
| _version_ | 1818662956518342656 |
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| author | Mélanie Girard François Bertrand Jason R. Tavares Marie-Claude Heuzey |
| author_facet | Mélanie Girard François Bertrand Jason R. Tavares Marie-Claude Heuzey |
| author_sort | Mélanie Girard |
| collection | DOAJ |
| description | Cellulose nanocrystals (CNCs) are promising biomaterials, but their tendency to agglomerate when dried limits their use in several applications. Ultrasonication is commonly used to disperse CNCs in water, bringing enough energy to the suspension to break agglomerates. While the optimized parameters for sonication are now well defined for small volumes of low concentration CNC suspensions, a deeper understanding of the influence of the dispersing process is needed to work with larger volumes, at higher concentrations. Herein, rheology is used to define the distribution and dispersion states upon ultrasonication of a 3.2 wt% CNC suspension. After considering the importance of the measurement sampling volume, the behavior of a more concentrated suspension (6.4 wt%) is examined and compared with a never-dried suspension of the same concentration to validate the dispersion state. |
| first_indexed | 2024-12-17T05:09:11Z |
| format | Article |
| id | doaj.art-2ed76d4c4b504b7d81677945d930dcca |
| institution | Directory Open Access Journal |
| issn | 1350-4177 |
| language | English |
| last_indexed | 2024-12-17T05:09:11Z |
| publishDate | 2021-10-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ultrasonics Sonochemistry |
| spelling | doaj.art-2ed76d4c4b504b7d81677945d930dcca2022-12-21T22:02:18ZengElsevierUltrasonics Sonochemistry1350-41772021-10-0178105747Rheological insights on the evolution of sonicated cellulose nanocrystal dispersionsMélanie Girard0François Bertrand1Jason R. Tavares2Marie-Claude Heuzey3Research Center for High Performance Polymer and Composite Systems (CREPEC), Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec H3C 3A7, Canada; Research Center for Industrial Flow Processes (URPEI), Polytechnique Montreal, Montreal, Quebec H3C 3A7, CanadaResearch Center for Industrial Flow Processes (URPEI), Polytechnique Montreal, Montreal, Quebec H3C 3A7, CanadaResearch Center for High Performance Polymer and Composite Systems (CREPEC), Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec H3C 3A7, CanadaResearch Center for High Performance Polymer and Composite Systems (CREPEC), Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec H3C 3A7, Canada; Corresponding author.Cellulose nanocrystals (CNCs) are promising biomaterials, but their tendency to agglomerate when dried limits their use in several applications. Ultrasonication is commonly used to disperse CNCs in water, bringing enough energy to the suspension to break agglomerates. While the optimized parameters for sonication are now well defined for small volumes of low concentration CNC suspensions, a deeper understanding of the influence of the dispersing process is needed to work with larger volumes, at higher concentrations. Herein, rheology is used to define the distribution and dispersion states upon ultrasonication of a 3.2 wt% CNC suspension. After considering the importance of the measurement sampling volume, the behavior of a more concentrated suspension (6.4 wt%) is examined and compared with a never-dried suspension of the same concentration to validate the dispersion state.http://www.sciencedirect.com/science/article/pii/S1350417721002893UltrasonicationDistributionDispersionSuspensionsCellulose nanocrystals |
| spellingShingle | Mélanie Girard François Bertrand Jason R. Tavares Marie-Claude Heuzey Rheological insights on the evolution of sonicated cellulose nanocrystal dispersions Ultrasonics Sonochemistry Ultrasonication Distribution Dispersion Suspensions Cellulose nanocrystals |
| title | Rheological insights on the evolution of sonicated cellulose nanocrystal dispersions |
| title_full | Rheological insights on the evolution of sonicated cellulose nanocrystal dispersions |
| title_fullStr | Rheological insights on the evolution of sonicated cellulose nanocrystal dispersions |
| title_full_unstemmed | Rheological insights on the evolution of sonicated cellulose nanocrystal dispersions |
| title_short | Rheological insights on the evolution of sonicated cellulose nanocrystal dispersions |
| title_sort | rheological insights on the evolution of sonicated cellulose nanocrystal dispersions |
| topic | Ultrasonication Distribution Dispersion Suspensions Cellulose nanocrystals |
| url | http://www.sciencedirect.com/science/article/pii/S1350417721002893 |
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