Peculiarities in the Hydration of Cellulose in Air and Water Suspensions as Studied by H NMR Spectroscopy
Bound water layers in hydrated powders and aqueous suspensions of microcrystalline cellulose were investigated by 1 H NMR methods. The characteristics of such layers were calculated and the magnitude of the interfacial energy (γ s ) at the cellulose/water interface in an aqueous environment determin...
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| Format: | Article |
| Language: | English |
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SAGE Publishing
2000-12-01
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| Series: | Adsorption Science & Technology |
| Online Access: | https://doi.org/10.1260/0263617001493882 |
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| author | O.V. Shulga D. Dollimore V.V. Turov |
| author_facet | O.V. Shulga D. Dollimore V.V. Turov |
| author_sort | O.V. Shulga |
| collection | DOAJ |
| description | Bound water layers in hydrated powders and aqueous suspensions of microcrystalline cellulose were investigated by 1 H NMR methods. The characteristics of such layers were calculated and the magnitude of the interfacial energy (γ s ) at the cellulose/water interface in an aqueous environment determined. It was found that the concentration of strongly bound water and the value of γ s were strongly dependent on the concentration of cellulose in suspension. This is probably due to the strong interaction between cellulose particles. At very high suspension concentrations, the concentration of water inside the cellulose filament decreased by more than three-times while the value of γ s decreased from 31 J/g to 9 J/g as a result of surface forces. |
| format | Article |
| id | doaj-art-a278bd9cd8874f46aa8825cd44086762 |
| institution | Kabale University |
| issn | 0263-6174 2048-4038 |
| language | English |
| publishDate | 2000-12-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Adsorption Science & Technology |
| spelling | doaj-art-a278bd9cd8874f46aa8825cd440867622025-01-03T00:11:13ZengSAGE PublishingAdsorption Science & Technology0263-61742048-40382000-12-011810.1260/0263617001493882Peculiarities in the Hydration of Cellulose in Air and Water Suspensions as Studied by H NMR SpectroscopyO.V. Shulga0D. Dollimore1V.V. Turov2 Department of Chemistry, University of Toledo, Toledo, OH 43606, USA Department of Chemistry, University of Toledo, Toledo, OH 43606, USA Institute of Surface Chemistry, National Academy of Sciences of Ukraine, Generala Naumova Str. 17, 03164 Kiev, UkraineBound water layers in hydrated powders and aqueous suspensions of microcrystalline cellulose were investigated by 1 H NMR methods. The characteristics of such layers were calculated and the magnitude of the interfacial energy (γ s ) at the cellulose/water interface in an aqueous environment determined. It was found that the concentration of strongly bound water and the value of γ s were strongly dependent on the concentration of cellulose in suspension. This is probably due to the strong interaction between cellulose particles. At very high suspension concentrations, the concentration of water inside the cellulose filament decreased by more than three-times while the value of γ s decreased from 31 J/g to 9 J/g as a result of surface forces.https://doi.org/10.1260/0263617001493882 |
| spellingShingle | O.V. Shulga D. Dollimore V.V. Turov Peculiarities in the Hydration of Cellulose in Air and Water Suspensions as Studied by H NMR Spectroscopy Adsorption Science & Technology |
| title | Peculiarities in the Hydration of Cellulose in Air and Water Suspensions as Studied by H NMR Spectroscopy |
| title_full | Peculiarities in the Hydration of Cellulose in Air and Water Suspensions as Studied by H NMR Spectroscopy |
| title_fullStr | Peculiarities in the Hydration of Cellulose in Air and Water Suspensions as Studied by H NMR Spectroscopy |
| title_full_unstemmed | Peculiarities in the Hydration of Cellulose in Air and Water Suspensions as Studied by H NMR Spectroscopy |
| title_short | Peculiarities in the Hydration of Cellulose in Air and Water Suspensions as Studied by H NMR Spectroscopy |
| title_sort | peculiarities in the hydration of cellulose in air and water suspensions as studied by h nmr spectroscopy |
| url | https://doi.org/10.1260/0263617001493882 |
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