Kyushu University · Engineering
Professor Koji Nakabayashi's research lab specializes in the development of advanced emulsification and polymerization techniques for creating highly functional nanomaterials. The lab focuses on surfactant-free, acoustically driven emulsification—particularly tandem ultrasonic emulsification—to produce stable, transparent nanoemulsions with precise control over droplet size. These emulsions serve as versatile platforms for synthesizing conductive polymer films, polymer nanoparticles, and nanowires, as well as enhancing catalytic reactions. The lab’s work bridges materials chemistry, nanotechnology, and sustainable synthesis.
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.
Open papers in the app to read, cite, and organize with AI.
