Two sets of styrene-based semifluorinated block copolymers, one with a perfluoroether pendant group and another with a perfluoroalkyl group, were synthesized by atom transfer radical polymerization. Microphase separation of the block copolymers was established by small-angle X-ray scattering and differential scanning calorimetry (DSC). DSC measurements also showed that the perfluoroether-based polymer had a low glass-transition temperature (-44°C). Contact-angle measurements indicated that the semifluorinated block copolymers had low surface energies (ca. 13 mJ/m2). These materials hold promise as low-surface-energy additives or surfactants for supercritical CO2 applications.
|Original language||English (US)|
|Number of pages||9|
|Journal||Journal of Polymer Science, Part A: Polymer Chemistry|
|State||Published - Feb 15 2004|
- Atom transfer radical polymerization (ATRP)
- Block copolymers