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Rapid Esterification of Wheat Straw Hemicelluloses Induced by Microwave Irradiation by Feng Xu; Jian-Xing Jiang; Run-Cang Sun; Dai She; Bai Peng; Jin-Xia Sun; John F. Kennedy is a Materials Science article available to read on EtoBox.
What is Rapid Esterification of Wheat Straw Hemicelluloses Induced by Microwave Irradiation about?
Esterification of wheat straw hemicelluloses with acetyl chloride, propionyl chloride, n-octanoyl chloride, lauroyl chloride, palmitoyl chloride, stearoyl chloride, and oleoyl chloride, respectively, using N-bromosuccinimide (NBS) as a catalyst was achieved in DMF/LICl medium by microwave irradiation. The effects of various acyl chlorides and the molar ratios of xylose units in hemicelluloses/acyl chloride on the degree of substitution (DS) were investigated and DS reached up to 1.34 by a few minutes. (13)C NMR studies showed that the esterification occurred preferentially at the C-3 and C-2 positions. On the other hand, microwave irradiation brought a partial degradation of the polymer, and therefore resulted in a slight decrease in thermal stability of the hemicellulosic derivatives in comparison with conventional heating technique.
Who reads Rapid Esterification of Wheat Straw Hemicelluloses Induced by Microwave Irradiation?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- Feng Xu; Jian-Xing Jiang; Run-Cang Sun; Dai She; Bai Peng; Jin-Xia Sun; John F. Kennedy
- Publisher
- Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0144-8617)
- Published
- 2008
- Language
- EN
- Field
- Materials Science (Physical Sciences)