Ionic Character and Alkyl Chain Length of Surfactants Affect Titanium Dioxide Dispersion and Its UV-Blocking Efficacy
The dispersion of titanium dioxide (TiO<sub>2</sub>) determines the performance of TiO<sub>2</sub>-based formulations in cosmetic and coating applications. In particular, the chemical and structural characteristics of the surfactants used to prepare TiO<sub>2</sub>...
Saved in:
| Main Authors: | , , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2024-11-01
|
| Series: | Applied Sciences |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2076-3417/14/23/11035 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| Summary: | The dispersion of titanium dioxide (TiO<sub>2</sub>) determines the performance of TiO<sub>2</sub>-based formulations in cosmetic and coating applications. In particular, the chemical and structural characteristics of the surfactants used to prepare TiO<sub>2</sub> dispersions are significant. However, the influence of surfactants on TiO<sub>2</sub> dispersion quality has not been systematically investigated. In this study, we observed the effects of the ionic character of commercial surfactants on the dispersion stability and UV-blocking efficacy of TiO<sub>2</sub>. Among the experimental surfactant groups, anionic sodium dodecyl sulfate was efficient in stabilizing TiO<sub>2</sub> as a water-in-oil formulation and enhancing its UV-blocking efficacy. Furthermore, an anionic fatty acid as a surfactant with a longer alkyl chain length was sufficient to stabilize the TiO<sub>2</sub> formulation, which also displayed the highest UV-blocking efficacy, comparable to the values of commercial TiO<sub>2</sub>-based cosmetic products. |
|---|---|
| ISSN: | 2076-3417 |