九州大学 · 工学
中西小次郎教授の研究室では、音響力を利用した新規な界面制御技術を基盤とし、界面に特化したナノスケールの分散系を創出し、その応用を追求しています。特に、界面活性剤を一切使用しない「ターンキュー音響エマルジョン」技術により、ナノメートルサイズの均一なモノマー液滴を有する透明で安定なエマルジョンを形成し、高導電性ポリマー膜やナノワイヤーの創出に成功しています。さらに、反応速度を劇的に向上させるW/Oナノエマルジョンを用いた相溶媒触媒反応の開発も進んでいます。
Figures are computed from collected data and may differ slightly.
A new technique for the preparation of a highly clear and transparent emulsified aqueous solution containing immiscible monomer droplets with diameters of a few tens of nanometres under surfactant-free conditions using tandem acoustic emulsification is described. Highly conductive transparent polymer films were successfully prepared from such an emulsified solution.
We have developed a novel synthesis method for size-controlled polymer nanoparticles using soap-free emulsion polymerization. This new synthetic method involves sequential ultrasonic irradiation (20 kHz → 500 kHz → 1.6 MHz → 2.4 MHz) for acoustic emulsification of a water-insoluble monomer such as methylmethacrylate (MMA) in an aqueous medium, followed by emulsion polymerization in the obtained solution without using any surfactants. The sequential ultrasonication (tandem acoustic emulsification
We have successfully demonstrated that W/O nanoemulsion prepared by the tandem acoustic emulsification is extremely useful medium for enhancing the rate of phase-transfer catalytic reactions.
A new approach to the preparation of solid conducting polymer nanowires is proposed, involving templated electrochemical polymerization of a corresponding monomer nanoemulsion formed by tandem acoustic emulsification.
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