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首页> 外文期刊>Journal of Applied Polymer Science >Nano/microfibers of EVA copolymer obtained by solution blow spinning: Processing, solution properties, and pheromone release application
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Nano/microfibers of EVA copolymer obtained by solution blow spinning: Processing, solution properties, and pheromone release application

机译：通过溶液吹旋转获得的EVA共聚物的纳米/微纤维：加工，溶液性能和信息素释放施用

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摘要

Pheromones have been used for monitoring and control of insect pests in crops, reducing the use of pesticides. However, among obstacles for this technology to be more useful, is the control and time to release. In this way, this work aims the evaluation of the release of pheromones using micro/nanofibers of ethylene-vinyl acetate (EVA) produced by blow spinning. Solutions with 0.5-15 wt % EVA were prepared based on the solubility parameter of the copolymer. Fibers were obtained from solutions in the semidiluted concentration regime. Synthetic sex pheromones from the oriental fruit moth, Grapholita molesta and citrus leafminer Phyllocnistis citrella were incorporated into the micro/nanofibers. The morphology and structure of these fibers were evaluated employing field emission scanning electron microscopy and wide-angle X-ray diffraction. The fibers sizes (95-426 nm) were dependent on the feed rate of the solution. As a result, pheromone release has occurred linearly over 10 weeks, as determined by thermogravimetry analysis. The solubility parameter influences the amount incorporated in the fiber and the rate of pheromone release. The proposed fiber/pheromone system is interesting since it reduces the use of actives and can be used in several planting cycles and reused. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47647.
机译：合情素已被用于监测和控制作物中的虫害，减少杀虫剂的使用。然而，在这种技术的障碍中更有用，是控制和时间释放。通过这种方式，这项工作旨在使用通过吹纺生产的乙烯 - 乙酸乙烯酯（EVA）的微/纳米纤维来评估信息酮的释放。基于共聚物的溶解度参数制备具有0.5-15wt％EVA的溶液。从半硅浓度制度中从溶液中获得纤维。来自东方果蝇的合成性信息素，将石斑龙摩尔塔和柑橘叶植物植物植物植物植物植物素掺入微/纳米纤维中。评估这些纤维的形态和结构，采用场发射扫描电子显微镜和广角X射线衍射。纤维尺寸（95-426nm）依赖于溶液的进料速率。结果，通过热重率分析确定了9周内的信息素释放。溶解度参数影响掺入纤维中的量和信息素释放的速率。所提出的纤维/信息耳系统是有趣的，因为它减少了活性物质的使用，并且可以在几个种植周期中使用并重复使用。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,136,47647。

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