.png){kind=icon}
.png){kind=icon}
Return
Alkali-resistant foams stabilized by the mixture of selenium-containing surfactants and dodecyl dimethyl ammonium oxide
.png){kind=icon}
PRE
AI
C
S
Y
J
DOI：10.1016/j.colsurfa.2025.138220.png)
.png){kind=icon}
Original request for help.png){kind=icon}
Share.png){kind=icon}
Save
Abstract
En 中文
Foams have diverse applications across various fields, including food, oil recovery, agriculture, and industrial processes. As thermodynamically unstable systems, the stability of foams is significantly affected by external environmental factors, including temperature and pH levels. The enhancement of foam stability under harsh conditions such as strong alkalinity remains challenged. In this paper, we report an alkali-resistant foam system stabilized by a mixture of selenium-containing surfactants (dihendecylcarboxylic acid sodium selenide, D11SeCOONa) and dodecanediamine dimethylamine oxide (DDAO). Compared with the foams stabilized by D11SeCOONa or DDAO alone, both the foam volume and stability were improved by the mixture of D11SeCOONa and DDAO at pH = 12, with the half-life time reaching 1600 min. The synergistic effect of the mixture of D11SeCOONa and DDAO was capable of decreasing the surface tension (33.52 mN/m, pH 12). Furthermore, DDAO alleviated the repulsive forces among the ionic head groups of D11SeCOONa, which led to a more compact interfacial film arrangement and mitigated the double-layer compression induced by OH⁻ ions. Therefore, compared with other foam systems, the binary mixture of D11SeCOONa and DDAO required a significantly lower concentration to achieve high foam volume and stability under strong alkaline conditions. This strategy of utilizing low concentrations of the binary surfactant system exhibits substantial potential for applications in diverse fields, including enhanced oil recovery, foamed concrete, and functional materials.
Journal
C
IF:
5.4
Papers:
4.7K
Citations:
7.7W
Organization
No organization information available
Cited Papers