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Published on: September 2, 2022
Triple-Responsive Pickering Emulsion Stabilized by Core Cross-linked Supramolecular Polymer Particles
Ting Zeng1,2, Amin Deng1,2, Duanguang Yang2
1Key Laboratory of Alternative Technologies for Fine Chemicals Process of Zhejiang Province, College of Chemistry and Chemical Engineering , Shaoxing University , Shaoxing , Zhejiang Province 312000 , China.
This study introduces triple-responsive Pickering emulsions stabilized by core cross-linked supramolecular polymer particles (CCSPs). These CCSPs offer flexible demulsification triggered by temperature, light, and amantadine hydrochloride for efficient reactions.
Area of Science:
- Materials Science
- Polymer Chemistry
- Supramolecular Chemistry
Background:
- Multiresponsive Pickering emulsions offer tunable demulsification compared to single-stimuli systems.
- Amphiphilic supramolecular polymer particles are key for developing advanced emulsion technologies.
Purpose of the Study:
- To develop a novel triple-responsive oil-in-water Pickering emulsion.
- To utilize core cross-linked supramolecular polymer particles (CCSPs) for stimuli-responsive stabilization and demulsification.
- To demonstrate the application of these emulsions in heterogeneous reactions.
Main Methods:
- Synthesized β-cyclodextrin-terminated poly(N-isopropylacrylamide) (PNIPAM-β-CD) and azobenzene-capped poly(4-vinylpyridine) (P4VP-azo) via reversible addition-fragmentation chain transfer polymerization.
- Formed amphiphilic supramolecular block copolymers (P4VP-b-PNIPAM) through host-guest interactions.
- Prepared CCSPs via self-assembly and cross-linking of P4VP-b-PNIPAM.
Main Results:
- CCSPs exhibited temperature-, light-, and amantadine hydrochloride-triggered morphological transitions.
- The resulting Pickering emulsion demonstrated flexible demulsification in response to multiple stimuli.
- The emulsion served as a platform for efficient heterogeneous reactions at the oil-water interface.
Conclusions:
- Developed a novel triple-responsive Pickering emulsion system using CCSPs.
- Demonstrated the potential for controlled demulsification and application in sustainable heterogeneous catalysis.
- Highlighted the versatility of supramolecular chemistry in designing advanced functional materials.
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