In:
Tenside Surfactants Detergents, Walter de Gruyter GmbH, Vol. 60, No. 4 ( 2023-07-26), p. 269-276
Abstract:
CO 2 -switchable materials in general and CO 2 -switchable surfactants in particular are of great interest in environmental research. There is a great potential to make processes more environmentally friendly by enhancing reusability and circularity and thus reducing material costs and energy consumption by replacing common non-switchable surfactants with their switchable counterparts. Inspired by this, the present work deals with the surface and foaming properties of aqueous solutions of the novel anionic CO 2 -switchable tail surfactant sodium 4-(methyl(octyl)amino)butane-1-sulfonate. In the presence of N 2 , the unprotonated surfactant is able to stabilize foams. By switching, i.e. by protonating the CO 2 -responsive trialkyl amine group in the surfactants hydrocarbon chain, the amphiphilic nature of the surfactant is reduced which is indicated by an increase of the plateau surface tension and a higher CMC compared to the non-protonated surfactant. Furthermore, the ability of the protonated surfactant to stabilize foams is reduced.
Type of Medium:
Online Resource
ISSN:
0932-3414
,
2195-8564
DOI:
10.1515/tsd-2023-2524
Language:
English
Publisher:
Walter de Gruyter GmbH
Publication Date:
2023
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