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首页> 外文期刊>Journal of Applied Polymer Science >Preparation of polylactide-based microspheres enclosing acetamiprid and evaluation of efficacy against cotton aphid by soil application
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Preparation of polylactide-based microspheres enclosing acetamiprid and evaluation of efficacy against cotton aphid by soil application

机译：包裹乙酰胺的基于聚丙交酯的微球的制备及土壤施用对棉蚜功效的评价

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摘要

Concern for the environment has increased interest in reducing the amount of pesticides applied to agricultural land. This can be accomplished by immobilization of the pesticides in polymer supports, which prevents volatilization degradation and leaching losses, and provides controlled release of the pesticides. In the present study, acetamiprid, a novel pesticide, was enclosed in polylactide (PLA)-based microspheres using solvent evaporation method via oil-in-oil (O/O) emulsion. Amount of acetamiprid released from PLA microspheres was less than 5% in phosphate buffered saline. On the other hand, incorporation of water-soluble polymer, such as poly(ethylene glycol) (PEG) and poly(oxyethylene) diglycolic acid, into the PLA microspheres resulted in increased amount of released acetamiprid (similar to 70%). Planting hole application by greenhouse pot test demonstrated that the efficacy of the PLA/PEG microspheres enclosing acetamiprid against cotton aphids was superior to that of PLA microspheres enclosing acetamiprid. (C) 2008 Wiley Periodicals, Inc.
机译：对环境的关注增加了对减少农用农药施用量的兴趣。这可以通过将农药固定在聚合物载体中来完成，这样可以防止挥发物降解和浸出损失，并可以控制农药的释放。在本研究中，使用溶剂蒸发法通过油包油型（O / O）乳液，将一种新型杀虫剂扑热息安包裹在基于聚丙交酯（PLA）的微球中。在磷酸盐缓冲液中，从PLA微球释放的对乙酰氨基酚的量少于5％。另一方面，将水溶性聚合物（例如聚（乙二醇）（PEG）和聚（氧乙烯）二乙醇酸）掺入PLA微球中会导致释放的扑热息痛数量增加（大约70％）。通过温室盆栽试验进行的穴播试验表明，封闭有吡虫啉的PLA / PEG微球对棉蚜的功效优于封闭有吡虫啉的PLA / PEG微球。 （C）2008 Wiley期刊公司

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