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An Oligoimide Particle as a Pickering Emulsion Stabilizer
Yu-Jin Cho1, Dong-Min Kim2, In-Ho Song3
1Department of Chemistry, Yonsei University, Wonju 26493, Korea. chyujn904@naver.com.
Polymers
|April 10, 2019
Summary
Synthesized pyromellitic dianhydride (PMDA) and 4,4'-oxydianiline (ODA)-based oligoimide particles in water. These particles efficiently stabilize both oil-in-water and water-in-oil Pickering emulsions, offering a versatile and easily produced stabilizer.
Area of Science:
- Polymer Chemistry
- Materials Science
- Colloid Science
Background:
- Oligoimides are advanced polymers with tunable properties.
- Pickering emulsions offer an alternative to traditional emulsion stabilizers.
- Water-based synthesis methods are desirable for environmental and cost reasons.
Purpose of the Study:
- To develop a novel, water-synthesized oligoimide particle for Pickering emulsion stabilization.
- To investigate the emulsion stabilizing capabilities of these particles in various oil phases.
- To demonstrate the application of these emulsions in microcapsule formation.
Main Methods:
- One-step synthesis of pyromellitic dianhydride (PMDA) and 4,4'-oxydianiline (ODA)-based oligoimide in water.
- Characterization of particle wetting properties and dispersion stability.
- Preparation and characterization of oil-in-water and water-in-oil Pickering emulsions.
- Application of emulsions for microcapsule fabrication.
Main Results:
- PMDA-ODA particles synthesized in water exhibited excellent partial wetting and stable dispersion in both aqueous and oil phases.
- Stable Pickering emulsions (both oil-in-water and water-in-oil) were formed using these water-synthesized particles.
- Emulsion droplet size was controllable via oligoimide particle concentration.
- Successfully applied oil-in-water Pickering emulsions for microcapsule preparation.
Conclusions:
- A facile, one-step water-based synthesis yields effective Pickering emulsion stabilizers.
- The synthesized PMDA-ODA oligoimide particles are versatile, stabilizing both O/W and W/O emulsions without surface modification.
- This approach offers advantages in ease of synthesis and broad applicability for emulsion stabilization and microencapsulation.
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