농약 방출 조절제 소재로서 실리카 중공 미세구의 물성연구

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

  • 발행 : 2004.12.30

초록

실리카 중공 미세구를 이용하여 방출 조절형 입제 농약을 제조합에 있어 실리카 중공 미세구 제조시 핵 제거 방법으로 열분해법을 사용하면 benfuracarb를 실리카 중공 미세구 중량의 2.67배까지 함침이 가능하였다. 이렇게 제조된 방출 조절형 입제 농약을 수중 방출 실험한 결과, 점결제로 ESO를 사용하였을 때 일정한 benfuracarb 방출 속도를 유지하여 10일부터 용액 중의 benfuracarb의 농도를 1.65 ppm 정도를 30일까지 유지되었다.

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.

키워드

참고문헌

  1. Agnihotri, Sunil A., Tejraj M. Aminabhavi (2004) Controlled release of clozapine through chitosan microparticles prepared by a novel method, J. Controlled Release 96:245-259 https://doi.org/10.1016/j.jconrel.2004.01.025
  2. Connick Jr., William J., (1982) Controlled release of the herbicides 2,4-D and Dichlobenil from alginate gels, J. Appl. Polymer Sci. 27:3341-3348
  3. Luo, Dan, Ernest Han, Nadya Belcheva, W. Mark Saltzman (2004) A self-assembled, modular DNA delivery system mediated by silica nanoparticles, J. Controlled Release 95:333-341 https://doi.org/10.1016/j.jconrel.2003.11.019
  4. Pepperman, Armand B., Jui-Chang, W. Kuan (1995) Controlled release formulations of alachlor based on calcium alginate, J. Controlled Release 34:17-23 https://doi.org/10.1016/0168-3659(94)00111-7
  5. Schreiber, Marvin M., Michael V. Hickman, Gordon D. Vail (1994) Efficacy of starch-encapsulated formulations of atrazine containing two or three herbicides in same granule, Weed Tech. 8:105-113
  6. Scher, Herbert B., Marius Rodson, Kuo-Shin Lee (1998) Microencapsulation of pesticides by interfacial polymerization utilizing isocyanate or aminoplast chemistry, Pestic. Sci. 54:394-400
  7. Siepmann, J., N, Faisant, J. Akiki, J. Richard, J. P, Benoit (2004) Effect of the size of biodegradable microparticles on drug release: experiment and theory, J. Controlled Release 96:123-134 https://doi.org/10.1016/j.jconrel.2004.01.011
  8. 신희관,박용성,우제완,장길상,황영애 (2003) Sacrificial Core법을 이용한 실리카 중공 미세구의제조, J. Korean Ind. Eng. Chem. 15(1):65-69
  9. 오경석,오병렬,박승순,이재구 (1999) 방출조절형 dicamba 입제의 물리화학성 및 생물효과,한국농약과학회지 3(1):37-45
  10. 오경석, 오병렬, 박승순, 진용덕, 이재구 (1998) 방출조절형 dicamba 입제의 용탈,토양잔류 및 휘산,한국농약과학회지 2(1):53-58
  11. 정봉진, 연재흠 (1998) 제조방식을 달리한 chlomethoxyfen과 butachlor 혼합입제의 물리성, 수중용출도와 생물효과 비교,한국농약과학회지 2(3):36-44