Studies of interactions between silane coupling agents and cellulose fibers with liquid and solid-state NMR
The hydrolysis of three alkoxy‐silane coupling agents, γ‐methacryloxypropyl trimethoxy silane (MPS), γ‐aminopropyl triethoxy silane (APS), and γ‐diethylenetriaminopropyl trimethoxy silane (TAS), was carried out in ethanol/water solutions (80/20 w/w) at different pH values and followed by 1H, 13C and...
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| Veröffentlicht in: | Magnetic resonance in chemistry 2007-06, Vol.45 (6), p.473-483 |
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| container_title | Magnetic resonance in chemistry |
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| creator | Salon, Marie-Christine B. Gerbaud, Guillaume Abdelmouleh, M. Bruzzese, Cécile Boufi, Sami Belgacem, Mohamed N. |
| description | The hydrolysis of three alkoxy‐silane coupling agents, γ‐methacryloxypropyl trimethoxy silane (MPS), γ‐aminopropyl triethoxy silane (APS), and γ‐diethylenetriaminopropyl trimethoxy silane (TAS), was carried out in ethanol/water solutions (80/20 w/w) at different pH values and followed by 1H, 13C and 29Si NMR spectroscopy. Acidic media were found to stabilize the hydrolyzed forms. As expected, the formation of silanol groups was followed by their self‐condensation to generate oligomeric structures, yielding, ultimately, solid homopolycondensated structures, as analyzed by 29Si and 13C high‐resolution solid‐state NMR. Hydrolyzed MPS in acidic media was then successfully adsorbed onto a cellulose surface and the ensuing substrates submitted to thermal treatment at 110–120 °C under reduced pressure, in order to create covalent bonds between cellulose and the coupling agent. Copyright © 2007 John Wiley & Sons, Ltd. |
| doi_str_mv | 10.1002/mrc.1994 |
| format | Article |
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Reson. Chem</addtitle><description>The hydrolysis of three alkoxy‐silane coupling agents, γ‐methacryloxypropyl trimethoxy silane (MPS), γ‐aminopropyl triethoxy silane (APS), and γ‐diethylenetriaminopropyl trimethoxy silane (TAS), was carried out in ethanol/water solutions (80/20 w/w) at different pH values and followed by 1H, 13C and 29Si NMR spectroscopy. Acidic media were found to stabilize the hydrolyzed forms. As expected, the formation of silanol groups was followed by their self‐condensation to generate oligomeric structures, yielding, ultimately, solid homopolycondensated structures, as analyzed by 29Si and 13C high‐resolution solid‐state NMR. Hydrolyzed MPS in acidic media was then successfully adsorbed onto a cellulose surface and the ensuing substrates submitted to thermal treatment at 110–120 °C under reduced pressure, in order to create covalent bonds between cellulose and the coupling agent. 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| ispartof | Magnetic resonance in chemistry, 2007-06, Vol.45 (6), p.473-483 |
| issn | 0749-1581 1097-458X |
| language | eng |
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| source | Wiley Journals |
| subjects | 29 Si NMR cellulose grafting Chemical and Process Engineering Engineering Sciences hydrolysis kinetics solid-state NMR |
| title | Studies of interactions between silane coupling agents and cellulose fibers with liquid and solid-state NMR |
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