Skip to main content
Article
Licensed
Unlicensed Requires Authentication

Oxygen Delignification of High-Yield Kraft Pulp. Part I: Structural Properties of Residual Lignins

  • and
Published/Copyright: June 1, 2005
Holzforschung
From the journal Volume 53 Issue 4

Summary

The chemistry of oxygen delignification of high-yield kraft pulp was studied by analysis of residual lignin extracted from kraft and kraft-oxygen pulps using the acid hydrolysis/dioxane extraction method. For reference pulps cooked to kappa numbers between 20 and 25, the content of free phenolic groups decreased to about 50% the original value upon oxygen delignification, while the content of carboxylic acid groups increased by 50–100%. For lignins isolated from high-yield kraft pulp and oxygen delignified high-yield kraft pulp, it was shown that high-yield kraft pulping with polysulfide (PS) and anthraquinone (AQ) gives a residual lignin which is chemically different from that of kraft pulps cooked to lower kappa numbers. Lignin extracted from oxygen delignified high-yield PS/AQ kraft pulp was more similar to lignins extracted from kraft pulps cooked to lower kappa numbers.

:
Published Online: 2005-06-01
Published in Print: 1999-07-01

Copyright © 1999 by Walter de Gruyter GmbH & Co. KG

Articles in the same Issue

  1. Estimation of the Relative Proportions of Cellulose I alpha and I beta in Wood by Carbon-13 NMR Spectroscopy
  2. The Relationship Between Pit Membrane Ultrastructure and Chemical Impregnability of Wood
  3. The Influence of the Geometrical Distribution of Cell-Wall Tissues on the Transverse Anisotropic Dimensional Changes of Softwood
  4. On The Permeability of Main Wood Species in China
  5. Weathering of Radial and Tangential Wood Surfaces of Pine and Spruce
  6. Removal of Hexavalent Chromium from Dilute Aqueous Solution by Coniferous Leaves
  7. Performance of Copper and Non-Copper Based Wood Preservatives in Terrestrial Microcosms
  8. Cooperation of Fungal Laccase and Glucose 1-Oxidase in Transformation of Björkman Lignin and Some Phenolic Compounds
  9. Micromorphological Characteristics of Compression Wood Degradation in Waterlogged Archaeological Pine Wood
  10. Induction of Resin Pockets in Seedlings of Pinus sylvestris L. by Mechanical Bending Stress during Growth
  11. The Lipophilic Extractives of an Interglacial Fossil Picea abies from Zeifen (Germany)
  12. Glyceryl-Acyl and Aryl-Acyl Dimers in Pseudotsuga menziesii Bark Suberin
  13. Modified Lignin and Delignification with a CAD-Deficient Loblolly Pine
  14. Polyhydric Alcohol Pulping at Atmospheric Pressure: An Effective Method for Organosolv Pulping of Softwoods
  15. Oxygen Delignification of High-Yield Kraft Pulp. Part I: Structural Properties of Residual Lignins
  16. A New Mechanism in the Ozone Reaction with Lignin Like Structures
  17. Surface Properties of Mechanical Pulps Prepared under Various Sulfonation Conditions and Preheating Time
  18. The Mechanisms Behind the Improved Dimensional Stability of Particleboards Made from Steam-Pretreated Particles
  19. Volatile Organic Chemicals Emissions from OSB as a Function of Processing Parameters
  20. Literature Reports
https://doi.org/10.1515/HF.1999.069

Articles in the same Issue

  1. Estimation of the Relative Proportions of Cellulose I alpha and I beta in Wood by Carbon-13 NMR Spectroscopy
  2. The Relationship Between Pit Membrane Ultrastructure and Chemical Impregnability of Wood
  3. The Influence of the Geometrical Distribution of Cell-Wall Tissues on the Transverse Anisotropic Dimensional Changes of Softwood
  4. On The Permeability of Main Wood Species in China
  5. Weathering of Radial and Tangential Wood Surfaces of Pine and Spruce
  6. Removal of Hexavalent Chromium from Dilute Aqueous Solution by Coniferous Leaves
  7. Performance of Copper and Non-Copper Based Wood Preservatives in Terrestrial Microcosms
  8. Cooperation of Fungal Laccase and Glucose 1-Oxidase in Transformation of Björkman Lignin and Some Phenolic Compounds
  9. Micromorphological Characteristics of Compression Wood Degradation in Waterlogged Archaeological Pine Wood
  10. Induction of Resin Pockets in Seedlings of Pinus sylvestris L. by Mechanical Bending Stress during Growth
  11. The Lipophilic Extractives of an Interglacial Fossil Picea abies from Zeifen (Germany)
  12. Glyceryl-Acyl and Aryl-Acyl Dimers in Pseudotsuga menziesii Bark Suberin
  13. Modified Lignin and Delignification with a CAD-Deficient Loblolly Pine
  14. Polyhydric Alcohol Pulping at Atmospheric Pressure: An Effective Method for Organosolv Pulping of Softwoods
  15. Oxygen Delignification of High-Yield Kraft Pulp. Part I: Structural Properties of Residual Lignins
  16. A New Mechanism in the Ozone Reaction with Lignin Like Structures
  17. Surface Properties of Mechanical Pulps Prepared under Various Sulfonation Conditions and Preheating Time
  18. The Mechanisms Behind the Improved Dimensional Stability of Particleboards Made from Steam-Pretreated Particles
  19. Volatile Organic Chemicals Emissions from OSB as a Function of Processing Parameters
  20. Literature Reports
Downloaded on 15.4.2026 from https://www.degruyterbrill.com/document/doi/10.1515/HF.1999.069/html
Scroll to top button