| 王 娅1, 2, 王 宁1, 2, 齐 麟1, 2, 李晓刚1, 2*.嘧菌酯·苯醚甲环唑PBS/PLA微球的结构表征与释放性能[J].植物保护,2017,43(4):56-60. |
| 嘧菌酯·苯醚甲环唑PBS/PLA微球的结构表征与释放性能 |
| Structure characterization and release properties of azoxystrobin and difenoconazole compound pesticide microspheres |
| 投稿时间：2016-10-29 修订日期：2017-01-04 |
| DOI： |
| 中文关键词: 嘧菌酯 苯醚甲环唑 微球 溶剂挥发法 聚丁二酸丁二醇酯 |
| 英文关键词:azoxystrobin difenoconazole microsphere solvent evaporation method poly (butylene succinate) |
| 基金项目:化学肥料和农药减施增效综合技术研发专项(2016YFD0201200); 中国烟草总公司科技重点项目(110201302014); 湖南省高校重点实验室平台开放基金(15K064); 湖南省研究生科研创新项目(CX2016B304) |
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| 中文摘要: |
| 以PBS/PLA共混物为复合载体, 嘧菌酯和苯醚甲环唑为包埋有效成分, 聚乙烯醇(PVA 1788)为分散剂, 采用溶剂挥发法制备了嘧菌酯·苯醚甲环唑PBS/PLA微球。通过光学显微镜、扫描电子显微镜、Nicolet 6700型傅立叶变换红外光谱仪、高效液相色谱(HPLC)等表征复配农药微球的性质, 采用透析袋法测定其缓释性能。结果表明, 所得的嘧菌酯·苯醚甲环唑PBS/PLA微球中嘧菌酯的载药量和包埋率分别为14.30%、85.06%, 苯醚甲环唑的载药量和包埋率为9.47%、90.18%, 且微球球形规整, 平均粒径为7.20 μm。嘧菌酯·苯醚甲环唑PBS/PLA微球具有良好的缓释性能, 并且2种活性成分的释放量之比与其最佳复配比接近, 可以达到增效目的。 |
| 英文摘要: |
| The microspheres containing azoxystrobin and difenoconazole were prepared by emulsion solvent evaporation method using PBS/PLA blends as microsphere delivery, azoxystrobin and difenoconazole as core materials and PVA 1788 as disperser. The compound pesticide microsphere was characterized by scanning electron microscope (SEM), optical microscope (OM), Nicolet 6700 FTIR spectroradiometer (FTIR Spectrometer) and high performance liquid chromatography (HPLC), and the performance of its controlled release was studied by dialysis bag method. The results showed that the entrapment efficiency and drug loading of microsphere were 85.06%, 14.30% for azoxystrobin and 90.18%, 9.47% for difenoconazole. The microsphere dispersed as individual particles with a well defined spherical shape and the average particle size of microsphere were 7.20 μm. The results also showed that the microsphere had a significant effect on controlled release; in addition, the concentration ratio of active ingredients was close to the optimum compound stoichiometry, which can achieve the purpose of improving the efficacy of the pesticides |
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