Silva, Séforah Carolina Marques ; Gambaryan-Roisman, Tatiana ; Venzmer, Joachim (2023)
Surface tension behavior of superspreading and non-superspreading trisiloxane surfactants.
In: Colloid and Polymer Science
doi: 10.1007/s00396-023-05106-0
Article, Bibliographie
Abstract
One parameter frequently considered to be relevant for superspreading of trisiloxane surfactants is surface tension kinetics. In the scientific literature, some experimental results reported for trisiloxane surfactants are in contradiction with fundamental concepts of surfactant monomer diffusion. Therefore, maximum bubble pressure tensiometry has been used to determine dynamic surface tension (DST) of two types of trisiloxane surfactants: superspreader and non-superspreader. Results show that both surfactants behave similarly at concentrations below critical micelle concentration (CMC), as expected. The CMC curves, as determined by drop shape analysis, confirmed that the more hydrophilic non-superspreader has a higher CMC as compared to the more hydrophobic superspreader. Accordingly, the lower surfactant monomer concentration of the superspreader results in a higher DST than the non-superspreader at the same surface age. So, in contrary to claims in the literature, there is nothing mysterious or unexpected concerning the surface tension behavior of trisiloxane surfactants.
| Item Type: | Article |
|---|---|
| Erschienen: | 2023 |
| Creators: | Silva, Séforah Carolina Marques ; Gambaryan-Roisman, Tatiana ; Venzmer, Joachim |
| Type of entry: | Bibliographie |
| Title: | Surface tension behavior of superspreading and non-superspreading trisiloxane surfactants |
| Language: | English |
| Date: | 19 April 2023 |
| Publisher: | Springer Nature |
| Journal or Publication Title: | Colloid and Polymer Science |
| DOI: | 10.1007/s00396-023-05106-0 |
| Abstract: | One parameter frequently considered to be relevant for superspreading of trisiloxane surfactants is surface tension kinetics. In the scientific literature, some experimental results reported for trisiloxane surfactants are in contradiction with fundamental concepts of surfactant monomer diffusion. Therefore, maximum bubble pressure tensiometry has been used to determine dynamic surface tension (DST) of two types of trisiloxane surfactants: superspreader and non-superspreader. Results show that both surfactants behave similarly at concentrations below critical micelle concentration (CMC), as expected. The CMC curves, as determined by drop shape analysis, confirmed that the more hydrophilic non-superspreader has a higher CMC as compared to the more hydrophobic superspreader. Accordingly, the lower surfactant monomer concentration of the superspreader results in a higher DST than the non-superspreader at the same surface age. So, in contrary to claims in the literature, there is nothing mysterious or unexpected concerning the surface tension behavior of trisiloxane surfactants. |
| Divisions: | 16 Department of Mechanical Engineering 16 Department of Mechanical Engineering > Institute for Technical Thermodynamics (TTD) |
| Date Deposited: | 26 Apr 2023 07:20 |
| Last Modified: | 26 Apr 2023 09:28 |
| PPN: | 507286006 |
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