A6 α-二置換型水溶性モノマーの超音波重合挙動

概要

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Ultrasonic polymerization behaviors of methyl 2-acetamidoacrylate (MAA) and methyl 2-propionamidoacrylate (MPA) were examined. The molecular weight and molecular weight distribution were 3.6×10^5 and 3.0, respectively, for PMAA obtained in the polymerization in aqueous solution at [MAA]=0.7M at 12℃ for 180min. When sodium sulfate was added to this solution ([Na_2SO_4]=0.65M), the reaction solution became clouded after ultrasonic irradiation and polymer adhered to the surface of solution and the side of the glass cell. The molecular weight was 9.1×10^5 and molecular weight distribution was 2.3 under this condition. The effect of additive salts is discussed in relation to the phase transition of these polymers. The ultrasonic polymerization of MPA was performed and the results are discussed in view of the difference in the monomer/polymer structures and polymerization behaviors.
日本ソノケミストリー学会の論文
2007-12-06