High-Efficiency Alkyl Ketene Dimer Emulsions Stabilized by Polyaluminum Chloride and Chitosan Complex
Xueshuai Chen1, Huili Wang2, Tongxin Zhou2
1Biological Engineering Technology Innovation Center of Shandong Province, Heze Branch, Qilu University of Technology (Shandong Academy of Sciences), Heze 274000, China.
Langmuir : the ACS Journal of Surfaces and Colloids
|August 6, 2024
Summary
Polyaluminum chloride (PAC) and chitosan (CTS) form a composite that enhances alkyl ketene dimer (AKD) emulsion stability and sizing efficiency. This organic/inorganic material offers improved performance in colloidal chemistry applications.
Area of Science:
- Colloidal Chemistry
- Materials Science
- Surface Chemistry
Background:
- Alkyl ketene dimer (AKD) emulsions are crucial in papermaking for sizing.
- Developing stable and efficient AKD emulsions requires advanced emulsifier systems.
- Polyaluminum chloride (PAC) and chitosan (CTS) are known for their interaction potential.
Purpose of the Study:
- To investigate the influence of PAC/CTS composite on AKD emulsion properties.
- To explore the physicochemical characteristics, microstructure, and sizing efficiency of PAC/CTS-stabilized AKD emulsions.
- To elucidate the interaction mechanism between PAC and CTS at the oil-water interface.
Main Methods:
- Design and synthesis of PAC/CTS organic/inorganic composite material.
- Preparation of AKD emulsions using PAC/CTS as emulsifiers.
- Characterization of emulsion stability via high-speed centrifugation.
- Evaluation of sizing efficiency.
- Microscopic analysis of the adsorption layer at the oil-water interface.
Main Results:
- The PAC/CTS complex formed a denser adsorption layer at the oil-water interface.
- Increased chitosan (CTS) concentration led to enhanced AKD emulsion stability.
- The addition of CTS significantly improved the sizing efficiency of the AKD emulsion.
- The study confirmed the effectiveness of PAC/CTS as a novel emulsifier system.
Conclusions:
- PAC/CTS composite material offers superior emulsification properties for AKD.
- The developed composite enhances both the stability and sizing efficiency of AKD emulsions.
- This research expands the application scope of inorganic/organic composites in colloidal chemistry.
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