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Citation: YUAN Qing-Mei, YANG Hong-Wei, ZHANG Fa-Guang, WANG Xing, ZHENG Bao-Zhong. Preparation of Rotenone Microcapsules by in-situ Polymerization[J]. Chinese Journal of Applied Chemistry, ;2006, 23(4): 382-385. shu

Preparation of Rotenone Microcapsules by in-situ Polymerization

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a Department of Materials Science and Engineering, Yunnan Universitry, Kunming 650091;
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b Kunming Millitary Academy of the PLA, Kunming;
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c Kunming Cement Inc., Kunming

Corresponding author: YUAN Qing-Mei,
Received Date: 30 May 2005
Available Online: 30 September 2005
Fund Project: 云南省自然科学基金资助项目(2002E0005Q) (2002E0005Q)

The preparation of microcapsules of bio-pesticide rotenone by means of in-situ polymerization,with melamine formaldehyde resin(MF) as the shell material, is discussed in this paper.The results show that MF resin is a superior shell material for controlled release bio-pesticide microcapsules.The production process of this resin is simple and it has good stability.The microcapsules did not break and the encapsulation efficiency did not changed obviously after they were preserved at 0℃,(25℃),50℃ for 14 d,respectively.When the stirring rate was is 500 r/min,the size of the microcapsule was 10~60 μm,meeting the standard of pesticide microcapsules.The controlled release times of the product is about 7 d or more,and the encapsulation efficiency is 68.55%±5.0%.
- rotenone,
- in-situ polymerization,
- microcapsules,
- melamine formaldehyde resin
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