82107-56-0Relevant articles and documents
A new application of ionic liquids: Hydrophobic properties of tetraalkylammonium-based poly(ionic liquid)s
Cardiano, Paola,Mineo, Placido G.,Neri, Fortunato,Lo Schiavo, Sandra,Piraino, Pasquale
experimental part, p. 1253 - 1260 (2009/05/26)
The potential of using poly(ionic liquid)s as a new family of hydrorepellent materials has been explored. Free-radical polymerization of a series of ionic liquids based on the polymerizable cation [2-(methacryloyloxy) ethyl]trimethylammonium and on the hydrophobic anions bis(trifluoromethylsulfonyl)imide, nonafluoro-1-butanesulfonate and dodecylbenzenesulfonate led to the corresponding poly(ionic liquid)s that were characterized by TGA and DSC analysis, SEM, MALDI-TOF and XPS spectroscopy. Contact angle investigations show that the nature of the surface of the poly(ionic liquid)s based on the nonafluoro-1-butanesulfonate and dodecylbenzenesulfonate anions are featured by remarkable hydrophobic properties with advancing contact angles (adv) lying in the range 113-118°, while to the polymer poly[2-(methacryloyloxy)ethyl]trimethylammonium bis(trifluoromethylsulfonyl)imide is associated poor hydrorepellent activity (adv = 76°). The tensiometric measurements also experience receding contact angles (rec) lying in the range 16-20° and a consequent high hysteresis suggesting that, on the outermost layers of the polymers, very high and very low-energy surface portions are present.
