Differences in solubility parameters and susceptibility to salting-out between softwood and hardwood lignosulfonates
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Bernt O. Myrvold
Abstract
The salting-out of lignosulfonates (LSs) follows the Hofmeister series, but different LSs show different susceptibility to salting-out. By comparing results for a large number of LSs from different plant species, pulping conditions, and post-treatment of the LS, it was found that the salting-out concentration for different LSs is mainly due to differences in the plant species with guaiacyl LS being much more salt-tolerant than guaiacyl-syringyl LS. The pulping conditions have only a minor effect on the salt tolerance of the different LSs. Post-treatment that increases the molecular weight or reduces the sulfonation also reduces the salt tolerance.
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©2016 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Original Articles
- Preparation of prehydrolysis-TMPs with different severity factors and analysis of the pulps and byproducts
- Differences in solubility parameters and susceptibility to salting-out between softwood and hardwood lignosulfonates
- Modified sodium lignosulfonates (NaLS) with straight chain alcohols and their aggregation behavior and adsorption characteristics on solid surfaces
- Improved impregnation efficiency and pulp yield of softwood kraft pulp by high effective alkali charge in the impregnation stage
- Semitransparent, durable superhydrophobic polydimethylsiloxane/SiO2 nanocomposite coatings on varnished wood
- Comparative study of the topochemistry on delignification of Japanese beech (Fagus crenata) in subcritical phenol and subcritical water
- Characterisation of Postia placenta colonisation during 36 weeks in acetylated southern yellow pine sapwood at three acetylation levels including genomic DNA and gene expression quantification of the fungus
- Relation of transverse compression properties and the degree of brown rot biodeterioration of Pinus glabra in the soil block test
- Four-point bending strength of key-hole side-edge-notched western hemlock (Tsuga heterophylla) wood
- Determination of the elasto-plastic material characteristics of Norway spruce and European beech wood by experimental and numerical analyses
- Time dependence of the orthotropic compression Young’s moduli and Poisson’s ratios of Chinese fir wood
Artikel in diesem Heft
- Frontmatter
- Original Articles
- Preparation of prehydrolysis-TMPs with different severity factors and analysis of the pulps and byproducts
- Differences in solubility parameters and susceptibility to salting-out between softwood and hardwood lignosulfonates
- Modified sodium lignosulfonates (NaLS) with straight chain alcohols and their aggregation behavior and adsorption characteristics on solid surfaces
- Improved impregnation efficiency and pulp yield of softwood kraft pulp by high effective alkali charge in the impregnation stage
- Semitransparent, durable superhydrophobic polydimethylsiloxane/SiO2 nanocomposite coatings on varnished wood
- Comparative study of the topochemistry on delignification of Japanese beech (Fagus crenata) in subcritical phenol and subcritical water
- Characterisation of Postia placenta colonisation during 36 weeks in acetylated southern yellow pine sapwood at three acetylation levels including genomic DNA and gene expression quantification of the fungus
- Relation of transverse compression properties and the degree of brown rot biodeterioration of Pinus glabra in the soil block test
- Four-point bending strength of key-hole side-edge-notched western hemlock (Tsuga heterophylla) wood
- Determination of the elasto-plastic material characteristics of Norway spruce and European beech wood by experimental and numerical analyses
- Time dependence of the orthotropic compression Young’s moduli and Poisson’s ratios of Chinese fir wood
