Fractionation-Purification, IR,1H13C NMR Spectral and Property Studies of an Industrial Based Sludge Lignin
- 1 September 1988
- journal article
- research article
- Published by Taylor & Francis in Journal of Wood Chemistry and Technology
- Vol. 8 (3) , 361-378
- https://doi.org/10.1080/02773818808070690
Abstract
A flow scheme was devised for the fractionation-purification of sludge lignin material (mixture of hardwood and softwood) used in the synthesis of a hardboard adhesive. Infrared spectroscopy, proton and carbon-13 nuclear magnetic resonance spectroscopy was used to assign the structure of the sludge lignin. The structural characterization indicated appreciable bond cleavage-rearrangement, and subsequent generation of additional acidic/ketone linkages, p-hydroxyphenyl units and saturated hydrocarbons. Additionally, the sludge lignin based extracts showed good adhesive bonding properties when used in a blend.Keywords
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