publication . Article . Other literature type . 2010

Effects of process severity on the chemical structure of Miscanthus ethanol organosolv lignin

Arthur Ragauskas;
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  • Published: 01 Jun 2010 Journal: Polymer Degradation and Stability, volume 95, pages 997-1,003 (issn: 0141-3910, Copyright policy)
  • Publisher: Elsevier BV
Abstract
Abstract Ethanol organosolv lignin extracted from Miscanthus × giganteus with differing levels of severity (1.75  13 C, 31 P NMR, FTIR spectroscopy and gel permeation chromatography. The results were compared to those from milled wood lignin from the same feedstock. The results showed that an increase in the severity of the treatment enhanced the dehydration reactions on the side chain and the condensation of lignin, increased the concentration of phenol groups and decreased the molecular mass of lignin fragments. It appeared that for the experimental conditions generally employed the cleavage of α-aryl ether bonds is primarily reaction responsible for lignin de...
Subjects
Medical Subject Headings: complex mixturestechnology, industry, and agriculturemacromolecular substancesfood and beveragesfungi
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