Fractional characterization of ash-AQ lignin by successive extraction with organic solvents from oil palm EFB fibre

By R. Sun, J. Tomkinson, G. Jones. 2000

157 citations recorded by the source corpus.

Abstract The ash-AQ lignin from the black liquor of oil palm empty fruit bunch was fractionated into four fractions by successive extraction with organic solvents of increasing hydrogen-bonding capacity. A comparison study of the lignin heterogeneity between the fractions was made in terms of fractional yield, content of associated polysaccharides, molecular weight, contents of carbonyl, phenolic hydroxyl, and aliphatic hydroxyl groups, and thermal stability. It was found that the content of carbonyl groups and the ratio of non-condensed syringyl/guaiacyl units decreased considerably with increasing molecular weight whereas the thermal stability increased.

Subfields: Biomaterials, Biomedical Engineering

View Paper: https://www.semanticscholar.org/paper/eb5df9fa502807c96506c74b7fd8139c4ffea285

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In Biomedical Engineering

1. A. Duval
2. N. Mansouri
3. F. Huang
4. Q. Yuan
5. M. Lawoko
6. Jost Ruwoldt

Citations in the corpus

• Solvent screening for the fractionation of industrial kraft lignin (2015, background): “2014) and other solvent-based fractionations (Mörck et al. 1988; Sun et al. 2000; Yuan et al. 2009; Wang et al. 2010) led to similar data.”
• Characterization of alkaline lignins for use in phenol-formaldehyde and epoxy resins (2011, background): “G-type units can form this type of bond, but S-type units cannot, because the C5 position is substituted by a methoxyl group (Brunow et al. 1999; Tejado et al. 2007).”