Journal of the Korean Industrial and Engineering Chemistry, Vol.13, No.5, 482-485, August, 2002
초음파에 의한 Polystyrene 미세구의 입도 조절
Size Control of Polystyrene Microspheres by Sonication
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초록
초음파를 조사하면서 계면활성제로 polyvinylpyrrolidone을 사용하여 emulsion polymerization에 의한 polystyrene 미세구 제조 연구로, 교반속도, 계면활성제의 양, 초음파 조사 시간 및 가교제의 첨가량이 polystyrene 미세구의 입도 크기에 미치는 영향을 조사하였다. Polystyrene 입도는 교반 속도, 계면활성제의 양과 초음파 조사 시간의 증가에 따라 감소함을 알 수 있었다. 특히 초음파 조사를 하지 않았을 때 polystyrene 미세구의 입도가 3 μm 이었으나 조사 시간이 1 min에서 10 min으로 증가할수록 입도는 2 μm에서 1 μm까지 크게 감소함을 확인할 수 있었다.
With ultrasonic sonication, polystyrene microspheres were prepared by emulsion polymerization in the presence of surfactant, polyvinypyrrolidone. The influence of various reaction parameters--such as speed of mechanical stirrer, amount of surfactant and crosslinking-agent, and the sonication time--on the particle size of the polystyrene microspheres formed was investigated. It was found that the particle size decreased as the rate of mechanical stirring, amount of surfactant and sonication time increased. In particular, the particle size of the polystyrene microspheres decreased from 2 to 1 μm as the sonication time was increased from 1 to 10 min, however, the particle size without the ultrasound irradiation was 3 μm.
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