Preprint Article Version 1 This version is not peer-reviewed

Effect of Synthetic Polypeptide – Bio-Surfactant Composition on the Formation and Stability of Foams

Version 1 : Received: 2 October 2024 / Approved: 2 October 2024 / Online: 3 October 2024 (10:59:49 CEST)

How to cite: Kosior, D.; Wiertel-Pochopień, A.; Morga, M.; Witkowski, Ł.; Zawala, J. Effect of Synthetic Polypeptide – Bio-Surfactant Composition on the Formation and Stability of Foams. Preprints 2024, 2024100185. https://doi.org/10.20944/preprints202410.0185.v1 Kosior, D.; Wiertel-Pochopień, A.; Morga, M.; Witkowski, Ł.; Zawala, J. Effect of Synthetic Polypeptide – Bio-Surfactant Composition on the Formation and Stability of Foams. Preprints 2024, 2024100185. https://doi.org/10.20944/preprints202410.0185.v1

Abstract

In recent decades, numerous studies have focused on finding environmentally friendly substitutes for commonly used petrochemical–based compounds. This paper explores the potential use of poly-L-lysine/rhamnolipids and poly-L-glutamic acid/ethyl lauroyl arginate mixtures, for foam formation and stabilization. Two complementary methods were employed to investigate the synergistic and antagonistic effects of these mixed polyelectrolyte/surfactant systems: (1) the thinning and rupture of thin foam films formed under dynamic conditions were monitored using a dynamic fluid-film interferometer (DFI), and (2) foamability tests were conducted using a standard dynamic foam analyzer (DFA). The results demonstrated that adding polyelectrolyte to an oppositely charged surfactant primarily induces a synergistic effect, enhancing foaming properties and extending foam lifetime. Furthermore, interferometric methods confirmed improved stability and slower drainage of thin foam films in systems containing synthetic polypeptides.

Keywords

polyelectrolyte/surfactants systems; foam stability; thin foam film; bio-surfactants; synthetic polypeptides; rhamnolipids; ethyl lauroyl arginate; poly-L-lysine; poly-L-glutamic acid

Subject

Chemistry and Materials Science, Physical Chemistry

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.