Infrared and 13C MAS nuclear magnetic resonance spectroscopic study of acetylation of cotton
Adebajo, Moses O. & Frost, Ray L. (2004) Infrared and 13C MAS nuclear magnetic resonance spectroscopic study of acetylation of cotton. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 60(1-2), pp. 449-453.
The acetylation of commercial cotton samples with acetic anhydride without solvents in the presence of about 5% 4-dimethylaminopyridine (DMAP) catalyst was followed using FTIR and 13C MAS NMR spectroscopy. This preliminary investigation was conducted in an effort to develop hydrophobic, biodegradable, cellulosic materials for subsequent application in oil spill cleanup. The FTIR results provide clear evidence for successful acetylation though the NMR results indicate that the level of acetylation is low. Nevertheless, the overall results indicate that cotton fibres are potential candidates suitable for further development via acetylation into hydrophobic sorbent materials for subsequent oil spill cleanup application. The results also indicate that de-acetylation, the reverse of the equilibrium acetylation reaction, occurred when the acetylation reaction was prolonged beyond 3 hours.
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|Item Type:||Journal Article|
|Keywords:||Cotton, cellulose, acetylation, infrared spectroscopy, 13C NMR spectroscopy|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > INORGANIC CHEMISTRY (030200)|
|Divisions:||Past > QUT Faculties & Divisions > Faculty of Science and Technology|
|Copyright Owner:||Copyright 2004 Elsevier|
|Copyright Statement:||Reproduced in accordance with the copyright policy of the publisher: This journal is available online.|
|Deposited On:||16 Mar 2005|
|Last Modified:||29 Feb 2012 23:03|
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