A06 ポリイオン液体水溶液中の超音波誘導変化(口頭発表)

抄録

Ultrasound (US) effect on aqueous poly(ionic liquid) (PIL) solution was investigated in viscosity and FT-IR spectroscopy, after the US having 23, 43 and 96 kHz frequencies at 50 W were exposed. The viscosity of the PIL aqueous solution decreased in the present of the US and then increased gradually as the US was stopped within about 10 min. In addition, the behavior of the aqueous PIL was followed by FT-IR spectroscopy. The FT-IR band of the OH stretching was enhanced in the intensity by the US exposure. The band intensity could also return to the original value after the US was stopped. These results were observed cyclically to respond to the US on/off. From the analysis of the FT-IR spectra, the US influenced breakage and reformation of the hydrogen bonds of PIL and water.