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
Artikel, Bibliographie
Kurzbeschreibung (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.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2023 |
| Autor(en): | Silva, Séforah Carolina Marques ; Gambaryan-Roisman, Tatiana ; Venzmer, Joachim |
| Art des Eintrags: | Bibliographie |
| Titel: | Surface tension behavior of superspreading and non-superspreading trisiloxane surfactants |
| Sprache: | Englisch |
| Publikationsjahr: | 19 April 2023 |
| Verlag: | Springer Nature |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Colloid and Polymer Science |
| DOI: | 10.1007/s00396-023-05106-0 |
| Kurzbeschreibung (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. |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet für Technische Thermodynamik (TTD) |
| Hinterlegungsdatum: | 26 Apr 2023 07:20 |
| Letzte Änderung: | 26 Apr 2023 09:28 |
| PPN: | 507286006 |
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