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Physicochemical characterization of alkaline and ethanol organosolv lignins from oil palm (Elaeis guineensis) fronds as phenol substitutes for green material applications

Abstract : In the present work, lignin isolation and physicochemical features from oil palm fronds (OPF) black liquor using Kraft, soda and organosolv pulping have been studied. The characterization of lignin samples by means of FTIR, H-1 and C-13 NMR has shown that different types of hydroxyl functional groups were obtained from different delignification processes. It was revealed that the lignin samples contained substantial amounts of non-condensed guaiacyl and syringyl unit with fewer p-hydroxyphenyl units. The GSH molar ratio of Kraft, soda and organosolv lignin was assigned to 26:51:21,21:49:30 and 23:67:10, respectively, upon quantification. The significant differences in the physicochemical features of the lignin isolated with alkali and organosolv treatments may be of great interest as a promising alternative for its revalorization.
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https://hal.univ-lorraine.fr/hal-01593766
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Submitted on : Tuesday, September 26, 2017 - 4:25:48 PM
Last modification on : Tuesday, February 23, 2021 - 8:48:04 AM

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M. Hazwan Hussin, Afidah Abdul Rahim, Mohamad Nasir Mohamad Ibrahim, Nicolas Brosse. Physicochemical characterization of alkaline and ethanol organosolv lignins from oil palm (Elaeis guineensis) fronds as phenol substitutes for green material applications. Industrial Crops and Products, Elsevier, 2013, 49, pp.23-32. ⟨10.1016/j.indcrop.2013.04.030⟩. ⟨hal-01593766⟩

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