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A Study on the Properties of Hollow Silica Microspheres for Controlled-release Pesticide Formulation  

Jung, Byoung-Soo (Department of Industrial Chemistry, Sangmyung University)
Park, Yong-Sung (Department of Industrial Chemistry, Sangmyung University)
Publication Information
The Korean Journal of Pesticide Science / v.8, no.4, 2004 , pp. 319-324 More about this Journal
Abstract
Pesticide formulations for controlled release were pepared with hollow silica microspheres. The hollow microsphere, which was obtained through calcination for the core removed after silica coating, showed maximum impregnation of benfuracarb up to 2.7 times of its mass in comparison with those obtained through the other core removal method. The release test of the pesticide formulation, when used with ESO(Epoxidized Soybean Oil) as a binder, showed ideal release pattern with steady release rate from the day 10 to 30 retaining the benfuracarb concentration in the water around 1.65 ppm.
Keywords
pesticide; formulations; hollow silica microspheres; controlled release; coating;
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