Stimuli-responsive Pickering emulsions: recent advances and potential applications

Area of Science:

• Colloid and Surface Science
• Materials Science
• Chemical Engineering

Background:

• Pickering emulsions, stabilized by solid particles, offer superior stability and biocompatibility compared to surfactant-stabilized emulsions.
• Their applications span diverse industries including petroleum, food, biomedicine, pharmaceuticals, and cosmetics.
• Controlled emulsion stabilization and destabilization are crucial for many industrial processes.

Purpose of the Study:

• To provide a comprehensive review of stimuli-responsive Pickering emulsion systems.
• To discuss the various external triggers used to control these emulsions.
• To highlight potential applications of these advanced emulsion systems.

Main Methods:

• Review of scientific literature on Pickering emulsions with stimuli-responsive properties.
• Analysis of systems responding to triggers such as pH, temperature, CO2, light, ionic strength, and magnetic fields.
• Discussion of applications including emulsion polymerization, enhanced oil recovery, catalyst recovery, and cosmetics.

Main Results:

• Pickering emulsions demonstrate tunable properties in response to multiple external stimuli.
• Various solid particles can be engineered to create stimuli-responsive Pickering emulsions.
• These responsive systems offer advantages in targeted applications requiring controlled emulsion behavior.

Conclusions:

• Stimuli-responsive Pickering emulsions represent a significant advancement in emulsion technology.
• Their ability to be controlled by external triggers broadens their applicability in various industrial sectors.
• Further research into stimuli-responsive Pickering emulsions will drive innovation in fields like advanced materials and sustainable processes.