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Solid State13C NMR and Diffuse Reflectance Mid-Infrared Spectroscopic Analysis of the Effects of Retting on the Chemical Composition of KenafFibre

✍ Scribed by Gamble, Gary R; Ramaswamy, Gita N; Baldwin, Brian S; Akin, Danny E

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 617 KB
Volume: 72
Category: Article
ISSN: 0022-5142
DOI: 10.1002/(sici)1097-0010(199609)72:1<1::aid-jsfa605>3.0.co;2-y

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✦ Synopsis

Bast ribbons from Tainung 1 (TI) and Guatemala 45 (G4J cultivars of kenaf (Hibiscus cannabinus) were subjected to a chemical retting process. The resulting changes at the base and tip regions of each cultivar were analysed using solid-state ' NMR and diffuse reflectance mid-infrared spectroscopies. Chemical retting was performed by boiling the substrates in NaOH (70 g litre-') + NaHSO, (5 g litre-') for 1 h, after which they were neutralised, washed and air dried. This process produced Iarge decreases in the non-cellulosic components, though 25% of the phenolic component was left undegraded, and cellulose crystallinity was increased by -5% over that in unretted samples.

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