期刊论文

中文

农药

1006-0413

2014

53

5

328-330,336

10.16820/j.cnki.1006-0413.2014.05.006

湖南省高等学校科学研究重点项目（11A053） 湖南省自然科学基金（13JJ5023）

本校为第一机构

[目的]制备以改性的β-环糊精为载体的七氟菊酯微胶囊。[方法]以聚乙烯醇-1788为乳化分散剂,运用溶剂挥发法制备微胶囊,使用激光粒度分析仪、光学显微镜、扫描电镜对微胶囊进行形貌表征,用紫外分光光度计研究微胶囊的缓释行为。[结果]β-环糊精与PBS按4 : 3的比例共混改性后制备的载体微胶囊的包封率为87.08%、载药量为57.81%,平均粒径为10 μm,缓释期为25~27 d。 [结论]改性后的β-环糊精载体微胶囊具有较好的结构形貌,载药量和包封率均比脲醛树脂载体微胶囊高,且缓释性更好。

[Aims] The microcapsules containing tefluthrin were prepared with modified β-cyclodextrin. [Methods]The microcapsules were prepared via emulsion solvent evaporation process, and PVA-1788 was used as emulsifier. The modified β-cyclodextrin microcapsules were characterized through automatic laser granularity analyzer, optical microscope, scanning electron microscope. The released properties were studied via ultraviolet spectrophotometer. [Results] The encapsulation rates of microcapsules made by β-cyclodextrin blended with PBS according to the...