A series of poly(ionic liquid)s based on the protic monomers obtained by the straight acid-base reaction between the polymerizable 2-(methacryloyloxy)ethyl-phthalic acid and trihexylamine, trioctylamine and dicyclohexylamine have been synthesized and characterized. The assessment of their macromolecular nature is based on FT-IR and 1H NMR spectroscopy, viscosimetry and MALDI-TOF mass spectrometry. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TG-DTA) reveal the amorphous behavior of the new poly(ionic liquid)s with a glass transition temperature ranging from ca. 2 to 67 °C and a relatively low thermal stability attributed to the decarboxylation of polyanions. Dynamic contact angles data are consistent with a hydrophilic behavior. Quartz Crystal Microbalance investigations display a fast, reversible and linear response towards CO2, being the dicyclohexylamine-based poly(ionic liquid) the most performing one. Electrochemical impedance spectroscopy investigations on trihexylamine poly(ionic liquid) are also reported.
Synthesis, CO2 sorption and capacitive properties of novel protic poly(ionic liquid)s
MINEO, PLACIDO;
2017-01-01
Abstract
A series of poly(ionic liquid)s based on the protic monomers obtained by the straight acid-base reaction between the polymerizable 2-(methacryloyloxy)ethyl-phthalic acid and trihexylamine, trioctylamine and dicyclohexylamine have been synthesized and characterized. The assessment of their macromolecular nature is based on FT-IR and 1H NMR spectroscopy, viscosimetry and MALDI-TOF mass spectrometry. Differential scanning calorimetry (DSC) and thermogravimetric analysis (TG-DTA) reveal the amorphous behavior of the new poly(ionic liquid)s with a glass transition temperature ranging from ca. 2 to 67 °C and a relatively low thermal stability attributed to the decarboxylation of polyanions. Dynamic contact angles data are consistent with a hydrophilic behavior. Quartz Crystal Microbalance investigations display a fast, reversible and linear response towards CO2, being the dicyclohexylamine-based poly(ionic liquid) the most performing one. Electrochemical impedance spectroscopy investigations on trihexylamine poly(ionic liquid) are also reported.File | Dimensione | Formato | |
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