Abstract
The aim of the present study is to reveal the effects of straight chain alcohols (CnOHs, 4<n<12) on the aggregation and adsorption behavior of sodium lignosulfonate (NaLS). The analytical methods zeta potential measurement and laser particle size analysis are in focus, while the adsorption characteristics of the samples are studied by means of electrostatic layer-by-layer self-assembly (LBL-SA), atomic force microscopy (AFM), UV spectroscopy, and a quartz crystal microbalance with dissipation (QCM-D) monitoring. The results indicated that the electronegative character of NaLS molecules increased and the aggregation degree of NaLS in solution diminished due to hydrophobic interactions between the hydrophobic core of NaLS and the alkyl chain of alcohols. The adsorption configuration of NaLS without CnOHs is a mushroom-like structure on the solid quartz surface, of which cation-π is the main driving force. In the presence of alcohols, the adsorption morphology of NaLS on the quartz surface changed from compact rigid to a less compact soft state. The adsorption configuration of NaLS with alcohols assumed the shape of polymer brushes, in which electrostatic interaction played an important role. Therefore, the adsorption amount of NaLS on solid surfaces significantly increases in the presence of alcohols, which facilitate the formation of more uniform and smooth adsorption films.
Funding source: National Natural Science Foundation of China
Award Identifier / Grant number: 21436004
Award Identifier / Grant number: 21476092
Funding statement: The authors would like to acknowledge the financial support of National Basic Research Program of China 973 (2012CB215302), International S&T Cooperation Program of China (2013DFA-41670), National Natural Science Foundation of China (21436004, 21476092), the Fundamental Research Funds for the Central Universities.
Acknowledgments
The authors would like to acknowledge the financial support of National Basic Research Program of China 973 (2012CB215302), International S&T Cooperation Program of China (2013DFA-41670), National Natural Science Foundation of China (21436004, 21476092), the Fundamental Research Funds for the Central Universities.
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©2016 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- 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
Articles in the same Issue
- 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