Comparison of dehydrogenase polymer (DHP) lignin with native lignin from gymnosperm wood by thermochemolysis using tetramethylammonium hydroxide (TMAH)

• Published in: Organic geochemistry Vol. 24; no. 6; pp. 593 - 600
• Main Authors: Hatcher, Patrick G., Minard, Robert D.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Oxford Elsevier Ltd 01-06-1996; Elsevier Science
• Subjects: Applied sciences; DHP lignin; Exact sciences and technology; lignin; Lignin and derivatives; Natural polymers; Physicochemistry of polymers; thermochemolysis; TMAH thermochemolysis; thermochemolysis; lignin; TMAH thermochemolysis; DHP lignin; Lignin; Picea glauca; Wood; Molecular structure; Chemical compound; Natural compound; Chemical degradation; Pseudotsuga menziesii; Quaternary ammonium compound; Softwood forest tree; Gymnospermae; Coniferales; Spermatophyta; Comparative study; Thermal degradation
• ISSN: 0146-6380; 1873-5290
• DOI: 10.1016/0146-6380(96)00051-4

When analyzed by the TMAH thermochemolysis procedure and solid-state
13C NMR, DHP guaiacyl lignin is found to yield products which are somewhat similar to those observed in fresh or degraded gymnosperm lignin. The relative amounts of the various TMAH products, particularly the stereoisomeric pairs of 3,4-dimethoxyphenyl-trimethoxypropane, however, are not identical, perhaps indicating that disordered and randomly polymerized DHP lignin is not similar to a possibly more ordered network in natural lignin.