Results 11 to 20 of about 8,604 (222)

Kraft Lignin Depolymerization in an Ionic Liquid without a Catalyst [PDF]

open access: yesBioResources, 2015
In this paper, the depolymerization of lignin was successfully achieved by the thermal treatment of kraft lignin in butyl-1,8-diazabicyclo[5.4.0]undec-7-enium chloride ([DBUC4+][Cl-]) without a catalyst.
Amadou Diop   +3 more
doaj   +2 more sources

SYNTHESIS AND CHARACTERIZATION OF KRAFT LIGNIN-BASED EPOXY RESINS [PDF]

open access: yesBioResources, 2011
Epoxidization is an interesting way to develop a new application of lignin and therefore to improve its application potential. In this work, kraft lignin-based epoxy resins were obtained by the epoxidization reaction, using the kraft lignin recovered ...
Nour Eddine El Mansouri   +2 more
doaj   +4 more sources

Methacrylated Kraft lignin as a double-edged sword: a quantitative analysis of Kraft lignin-containing objects printed by stereolithography [PDF]

open access: yes, 2023
Finding an alternative to fossil-based resins which is renewable, sustainable, and affordable is an important step to enable large-scale industrial manufacturing using stereolithography.
Stephen, Chmely   +4 more
core   +1 more source

Valorization of Kraft Lignin by mechanochemical processing with sodium percarbonate [PDF]

open access: yes, 2022
Lignin is a highly underused resource. The complex and heterogeneous structure poses a challenge to industry and science. Problems are high polydispersity, high-molar-mass and insufficient functional groups.
Jana, Falkenhagen   +3 more
core   +1 more source

Understanding sulfonated kraft lignin re-polymerization by ultrafast reactions in supercritical water [PDF]

open access: yes, 2022
Producción CientíficaRe-polymerization reactions are a commonly reported issue on the way to the higher recovery of monomers from lignin. The reactivity of monomers obtained from lignin depolymerization and their contribution to the re-polymerization in ...
Balakshin, Mikhail   +5 more
core   +1 more source

Rational analysis of dispersion and solubility of Kraft lignin in polyols for polyurethanes [PDF]

open access: yes, 2022
The incorporation of Kraft lignin (KL) in polyurethanes has received much academic and industrial attention due to its potential for sustainably improving broader property profiles.
Haridevan, Hima   +3 more
core   +1 more source

Lignin reinforcement in thermosets composites [PDF]

open access: yes, 2022
S.119-151With its highly branched structure, its functional groups, and its free ring positions in the aromatic monomers, lignin is a promising bio-based candidate for network formation in resin formulations for thermosets and thermoset composites.
Ganster, Johannes, Engelmann, Gunnar
core   +1 more source

Selective substitution of long-acyl groups into alcohols of kraft lignin over transesterification using ionic liquid

open access: yesJournal of Wood Science, 2021
Kraft lignin is a valuable aromatic renewable resource that is discharged in large quantities during the kraft pulping process. In this study, kraft lignin derivatives with improved solubility and thermal properties were prepared by a facile chemical ...
Shiori Suzuki, Tadahisa Iwata
doaj   +1 more source

Kraft Lignin Behaviour in Diffused Aeration of Kraft Effluents

open access: yesWater Science and Technology, 1988
Diffused aeration experiments carried out using a Kraft black liquor in batch reactors at 21±1ΩC were performed in order to characterize the relative importance of the mechanisms of chemical oxidation and condensation of lignin structures upon COD, lignin and colour removal and also to evaluate the influence of agitation intensity on these mechanisms ...
L. Larrea, C.F. Forster, D. Melé
openaire   +1 more source

Fungal Treatment Modifies Kraft Lignin for Lignin- and Cellulose-Based Carbon Fiber Precursors [PDF]

open access: yes, 2020
The kraft lignin's low molecular weight and too high hydroxyl content hinder its application in bio-based carbon fibers. In this study, we were able to polymerize kraft lignin and reduce the amount of hydroxyl groups by incubating it with the white-rot ...
Nousiainen, Paula A.   +13 more
core   +1 more source

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