Journal article
Synthesis and characterization of birch wood xylan succinoylated in 1-n-butyl-3-methylimidazolium chloride
The chemical modification of birch wood xylan was undertaken in the ionic liquid 1-n-butyl-3-methylimidazolium chloride (C4mimCl) using three different long-chain succinic anhydrides: n-octenyl succinic anhydride (n-OSA), n-dodecenyl succinic anhydride (n-DDSA) and n-octadecenyl succinic anhydride (n-ODSA).
Reactions were performed at temperatures of 80–100 °C and reaction times of 0.5–22 hours resulting in a degree of substitution (DS) of 0.08–0.27. The formation of the desired products was confirmed through the use of 1H NMR and FT-IR, while DS was determined by titration. Thermogravimetric analysis of the modified and native xylans showed a slight lowering of thermal stability with functionalization.
Contact angle measurements on spin-coated surfaces of modified xylan films showed a significant increase in hydrophobicity with the introduction of the alkenyl-functionalized succinic anhydride moieties.
Language: | English |
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Year: | 2011 |
Pages: | 2010-2020 |
ISSN: | 17599962 and 17599954 |
Types: | Journal article |
DOI: | 10.1039/C1PY00086A |