Development of melamine-formaldehyde resin microcapsules with low formaldehyde emission suited for seed treatment

文献类型： 外文期刊

第一作者： Yang, Lijuan

作者： Yang, Lijuan;Yan, Xiaojing;Yang, Daibin;Yuan, Huizhu;Li, Guangxing

作者机构：

关键词： Microcapsule;Formaldehyde-melamine resin;Formaldehyde emission;Safety;Peanut seed

期刊名称：COLLOIDS AND SURFACES B-BIOINTERFACES （ 影响因子：5.268； 五年影响因子：4.957 ）

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年卷期：

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收录情况： SCI

摘要： To reduce the application frequency and improve the efficacy of insecticides, melamine-formaldehyde (MF) resin microcapsules suited for seed treatment containing a mixture of fipronil and chlorpyrifos were prepared by in situ polymerization. A formaldehyde/melamine molar ratio of 4:1 yielded microcapsules with the smallest size and the most narrow size distribution. The level of unreacted formaldehyde in the microcapsule suspension increased proportionally with the F/M molar ratio. When the MF resin microcapsule suspension was used as a seed treatment to coat peanut seeds, the unreacted formaldehyde did not significantly inhibit the seedling emergence, but the ongoing release of formaldehyde generated from the degradation of MF resins played an important role in inhibiting emergence. Melamine was shown to be an effective formaldehyde scavenger that mitigated this inhibition When it was incorporated within the microcapsule wall. Field experiments showed that MF-resin-encapsulated mixtures of fipronil and chlorpyrifos have much greater efficacies against white grubs than the conventional formulation. (c) 2015 Elsevier B.V. All rights reserved.

分类号： O648

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