Foamitizer: High ethanol content foams using fatty acid crystalline particles

[Display omitted] Aqueous foams are encountered in many commercial products used in our everyday lives and are widely studied. However, the formation and stabilization of foams using high alcohol content (>75%) solvents such as ethanol is still a scientific challenge. Herein, we report for the fi...

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Bibliographic Details
Published in:Journal of colloid and interface science 2021-10, Vol.600, p.882-886
Main Authors: Fameau, Anne-Laure, Ma, Yingzhen, Siebenbuerger, Miriam, Bharti, Bhuvnesh
Format: Article
Language:English
Subjects:
Chemical engineering
Chemical Sciences
Crystals
Engineering Sciences
Fatty acids
Foam
Reactive fluid environment
Soft-material
Solvent effect
Thermostimulable
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Summary:[Display omitted] Aqueous foams are encountered in many commercial products used in our everyday lives and are widely studied. However, the formation and stabilization of foams using high alcohol content (>75%) solvents such as ethanol is still a scientific challenge. Herein, we report for the first-time foams based on high ethanol content showing long-term stability by using natural fatty acid crystals. The platelet-shape crystals are adsorbed at the air-water surface protecting the bubbles against coalescence. The melting of crystals triggers the foam destabilization leading to thermostimulable high ethanol content foams. These foams can be used as a new formulation strategy for alcohol-based hand sanitizers to better clean hands, protect the skin by the presence of fatty acids, and limit the transmission of virus and other pathogens.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2021.05.076