A new route for the functionalisation of wood through transesterification reactions |
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Authors: | Nilgü l Ö zmen,Nihat Sami Ç etin,Gilles Sè be |
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Affiliation: | a Faculty of Forestry, Kahramanmaras Sutcu Imam University, Kahramanmaras, Turkey b Laboratoire de Chimie des Substances Végétales, Université Bordeaux 1, Talence, France |
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Abstract: | A novel transesterification reaction between acetylated maritime pine sapwood (Pinus pinaster Soland) and methyl benzoate (MB), in the presence of dibutyltin oxide (DBTO) as a catalyst, was performed. Reaction was confirmed by Fourier-transform infrared spectroscopy (FTIR) and 13C nuclear magnetic resonance cross-polarisation with magic-angle spinning (NMR CP MAS) analysis: signals corresponding to benzoylated wood were identified and, when transesterification was performed with ethyl trimethylsilylacetate (ETMSA), characteristic trimethylsilyl groups were detected. The acetyl/benzoyl exchange rate was found to increase with increasing amount of DBTO, temperature and reaction time and a concurrent deterioration of the woody material was evidenced. |
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Keywords: | Wood Acetylation Transesterification Methyl benzoate Ethyl trimethylsilylacetate Fourier-transform infrared spectroscopy (FTIR) 13C nuclear magnetic resonance cross-polarisation with magic-angle spinning (NMR CP MAS) |
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