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Updated: Feb 10, 2026
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Solubility of Hydrophobic Compounds in Aqueous Solution Using Combinations of Self-assembling Peptide and Amino Acid
Published on: September 20, 2017
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Cationic hydrophobicity promotes dissolution of cellulose in aqueous basic solution by freezing-thawing
Yang Wang1, Lijuan Liu, Pan Chen
1College of Chemistry and Molecular Sciences, Wuhan University, Wuhan 430072, China. anglu@whu.edu.cn.
Physical Chemistry Chemical Physics : PCCP
|May 16, 2018
Summary
Hydrophobic cations in aqueous solutions significantly enhance cellulose solubility and stability by reducing surface tension. This discovery offers potential for developing greener cellulose solvents and recycling methods.
Area of Science:
- Materials Science
- Green Chemistry
- Polymer Chemistry
Background:
- Cellulose dissolution is crucial for its applications but challenging due to its complex structure.
- Existing solvents often pose environmental concerns.
- Developing efficient and eco-friendly cellulose solvents is a key research area.
Purpose of the Study:
- To investigate the physical dissolution of cellulose in various aqueous quaternary ammonium hydroxides and alkali metal hydroxides.
- To understand the role of cation hydrophobicity and kosmotropicity in cellulose solubility.
- To explore the potential of these solvents in green chemistry applications.
Main Methods:
- Freezing-thawing method for cellulose dissolution.
- Systematic variation of cation hydrophobicity in ammonium hydroxides.
- Analysis of cellulose solubility, aggregation, and gelation.
- Molecular dynamics simulations to elucidate interfacial behavior.
- Comparison with the Hofmeister series.
Main Results:
- Increased cation hydrophobicity significantly enhanced cellulose solubility and stability.
- Hydrophobic cations accumulated at the cellulose interface, reducing surface tension and promoting dispersion.
- Cellulose solubility correlated with the Hofmeister series, with more kosmotropic cations showing greater dissolution power.
- Aqueous quaternary ammonium hydroxides demonstrated recyclability.
Conclusions:
- Cation hydrophobicity is a critical factor for effective cellulose dissolution in aqueous systems.
- The observed dissolution patterns align with the Hofmeister series, providing insights for novel solvent design.
- Aqueous quaternary ammonium hydroxides are promising, recyclable solvents for cellulose, supporting green chemistry initiatives.
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