Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Surface Active Agents

Surface Active Agents

Surfactants, named for their behavior at interfaces, positively adsorb at the interfaces of two phases, reducing interfacial tension. Their versatility as emulsifiers, detergents, and foaming agents stems from this ability. Surfactants, often termed amphiphiles, share the property of amphipathy, with molecules having both hydrophilic and hydrophobic portions. The hydrophilic part is called the head, and the hydrophobic part, including an elongated alkyl substituent, forms the tail.Surfactants...

Micelles

Micelles

Micelle formation is an intricate process that hinges on the properties of amphiphilic or amphipathic molecules and the conditions of the system in which they are found. Amphiphilic molecules, which have both hydrophilic (water-attracting) and hydrophobic (water-repelling) parts, play a critical role in this process.In aqueous environments, these molecules arrange themselves such that their hydrophilic heads are turned towards the water phase, while their hydrophobic tails are oriented away...

Breathing

Breathing

The process of breathing, inhaling and exhaling, involves the coordinated movement of the chest wall, the lungs, and the muscles that move them. Two muscle groups with important roles in breathing are the diaphragm, located directly below the lungs, and the intercostal muscles, which lie between the ribs. When the diaphragm contracts, it moves downward, increasing the volume of the thoracic cavity and creating more room for the lungs to expand. When the intercostal muscles contract, the ribs...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Prognostic value of circulating tumor DNA in pancreatic cancer: a systematic review and meta-analysis.

Aging·2020

Same author

The role of ferroptosis regulators in the prognosis, immune activity and gemcitabine resistance of pancreatic cancer.

Annals of translational medicine·2020

Same author

The vascular endothelial growth factor trap aflibercept induces vascular dysfunction and hypertension via attenuation of eNOS/NO signaling in mice.

Acta pharmacologica Sinica·2020

Same author

MBNL1 regulates isoproterenol-induced myocardial remodelling in vitro and in vivo.

Journal of cellular and molecular medicine·2020

Same author

Platelets Stimulate Liver Regeneration in a Rat Model of Partial Liver Transplantation.

Liver transplantation : official publication of the American Association for the Study of Liver Diseases and the International Liver Transplantation Society·2020

Same author

Mutant p53 in Cancer Progression and Targeted Therapies.

Frontiers in oncology·2020

Same journal

Synergistic Buried Interface Engineering via Ion Exchange and Passivation for High-Performance Inverted Perovskite Solar Cells.

ACS applied materials & interfaces·2026

Same journal

In Situ Wet Coating of Ammonium Phosphomolybdate for Enhancing the Kinetics and Cycling Stability of NaNi<sub>1/3</sub>Fe<sub>1/3</sub>Mn<sub>1/3</sub>O<sub>2</sub> Cathode Material.

ACS applied materials & interfaces·2026

Same journal

Molecular Hybrids of Serum Albumin and Cobalt Phthalocyanine for Asymmetric Oxidation of C=C and C-H Bonds.

ACS applied materials & interfaces·2026

Same journal

A High-Throughput Platform for Measuring and Predicting Vitrification Behavior in Multicomponent Aqueous Solutions.

ACS applied materials & interfaces·2026

Same journal

A Brain-Targeted DNA Delivery Nanocarrier Modulator for Synergistic Therapy of Parkinson's Disease.

ACS applied materials & interfaces·2026

Same journal

Quasi-Discrete Channels of Porous Coordination Polymers for Selective Multiscenario CO<sub>2</sub> Recognition.

ACS applied materials & interfaces·2026

See all related articles

Search research articles

Related Experiment Video

Updated: May 1, 2026

Production of Membrane-Filtered Phase-Shift Decafluorobutane Nanodroplets from Preformed Microbubbles

Production of Membrane-Filtered Phase-Shift Decafluorobutane Nanodroplets from Preformed Microbubbles

Published on: March 23, 2021

Surfactant-free switchable emulsions using CO2-responsive particles.

Chen Liang¹, Qingxia Liu, Zhenghe Xu

¹7th Floor, ECERF, Department of Chemical and Material Engineering, University of Alberta , Edmonton, Alberta T6G 2V4, Canada.

ACS Applied Materials & Interfaces

|April 1, 2014

Summary

This summary is machine-generated.

Bi-wetting particles stabilize emulsions by controlling interfacial area. Introducing CO2 alters particle wettability, destabilizing emulsions, while its removal re-establishes stability.

More Related Videos

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Published on: March 18, 2020

Double Emulsion Generation Using a Polydimethylsiloxane PDMS Co-axial Flow Focus Device

Double Emulsion Generation Using a Polydimethylsiloxane PDMS Co-axial Flow Focus Device

Published on: December 25, 2015

Related Experiment Videos

Last Updated: May 1, 2026

Production of Membrane-Filtered Phase-Shift Decafluorobutane Nanodroplets from Preformed Microbubbles

Production of Membrane-Filtered Phase-Shift Decafluorobutane Nanodroplets from Preformed Microbubbles

Published on: March 23, 2021

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Studying Surfactant Effects on Hydrate Crystallization at Oil-Water Interfaces Using a Low-Cost Integrated Modular Peltier Device

Published on: March 18, 2020

Double Emulsion Generation Using a Polydimethylsiloxane PDMS Co-axial Flow Focus Device

Double Emulsion Generation Using a Polydimethylsiloxane PDMS Co-axial Flow Focus Device

Published on: December 25, 2015

Area of Science:

Colloid and Surface Science
Materials Science
Chemical Engineering

Background:

Surfactant-free emulsions offer environmental benefits but require effective stabilization.
Bi-wetting particles can stabilize emulsions by adsorbing at the oil-water interface.
Particle wettability dictates emulsion type (oil-in-water or water-in-oil).

Purpose of the Study:

To investigate the use of CO2-responsive silica particles for tunable emulsion stabilization.
To explore the impact of CO2-induced wettability changes on emulsion stability.
To demonstrate reversible emulsion destabilization and re-stabilization.

Main Methods:

Grafting CO2-responsive and hydrophobic functional groups onto silica particles.
Preparing oil-in-water and water-in-oil emulsions using functionalized bi-wetting particles.
Introducing and removing CO2 gas to alter particle wettability and observe emulsion behavior.

Main Results:

Particles with CO2-responsive groups alone stabilized oil-in-water emulsions.
Particles with both CO2-responsive and hydrophobic groups stabilized water-in-oil emulsions.
CO2 introduction destabilized emulsions by increasing particle wettability and surface charge, leading to phase separation.
CO2 removal via air sparging re-established emulsion stability.

Conclusions:

CO2-responsive bi-wetting particles provide a mechanism for tunable emulsion stabilization.
The CO2-induced change in particle wettability is a key factor in controlling emulsion stability.
This system offers a pathway for stimuli-responsive emulsion design and control.