Journal
JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY
Volume 36, Issue 4, Pages 532-539Publisher
TAYLOR & FRANCIS INC
DOI: 10.1080/01932691.2014.916221
Keywords
Dye dispersants; molecular weights; sodium lignosulfonate; ultrafiltration
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Funding
- National Basic Research Program of China 973 [2012CB215302]
- International S&T Cooperation Program of China [2013DFA41670]
- Fundamental Research Funds for the Central Universities
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Three purified sodium lignosulfonates (SLs) with different molecular weights were prepared by ultrafiltration. The structural characteristics of SL and their effects on the properties of dye were investigated. When the molecular weight is increased, the chroma, purity, and the content of guaiacyl of SL increases, whereas the phenolic hydroxyl, carboxyl, and sulfonic groups in SL decrease, the dispersibility, heat stability properties, and dyeing rate of SL on dye improve, and the fiber staining of SL weakens at high concentration. The fraction of SL with the cutoff molecular weight above 2.5 kDa has the weakest reduction effect on dyestuffs.
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