乙基纤维素/多效唑微胶囊的制备与表征

Preparation and Characterization of Paclobutrazol Microcapsules with Ethyl Cellulose

农药缓释微胶囊剂是当前农药新剂型中技术含量最高、最具开发前景的一种剂型,能很好地满足日益严格的环境保护需要。作为胶囊材料,天然高分子材料如明胶、壳聚糖、纤维素等因其价廉、易降解而具有一定的优势,本文选择乙基纤维素作为囊皮材料,采用有机溶剂蒸发法对植物生长调节剂多效唑进行复合,合成了具有缓释功能的多效唑微胶囊,考察了反应温度和搅拌速度等对微胶囊形成的影响,并用光学显微镜对其进行了表征。

The pesticide slowly-releasing microcapsules is dosage form with the best technology content and the most promising potential, which can satisfy the strict environmental protection needs. As capsule materials, the natural polymer materials, such as gelatin, chitosan or cellulose, are outstanding potential selection for their properties of cheap and degradable. In this article, the ethyl cellulose is selected to coordinate with paclobutrazol pesticides. It is researched how the temperature and the mixing speed affect the conformation of microcapsules. Finally, a pesticide slowly-releasing microcapsules is got which is of slowly-releasing characteristics and lower cost.