农药学学报2017，Vol.19Issue(6)：776-780,5.DOI:10.16801/j.issn.1008-7303.2017.0104
氟乐灵微球的制备及其控释效果研究
Preparation of trifluralin microspheres and its controlled release performance
摘要
Abstract
In order to delay the degradation and increase the pesticides lasting validity period, silica-coated trifluralin microspheres was prepared by the emulsion method. In the preparation procedure of silica microspheres, tetraethyl orthosilicate (TEOS) was employed as the silica source and tween-60 was used as the surfactant. The factors related to the loading efficiency and controlled release behavior of free silica-coated trifluralin microspheres were investigated. Multi-level release models of temperature and pH value on the controlled-release performance were established. Silica-coated trifluralin microspheres shows regular spherical, low particle size and high loading efficiecy (50%). The stability of trifluralin increased when coated in microspheres, and release rate of trifluralin increased with the increase of pH and temperature. The trifluralin microspheres has improve the stability of trifluralin in the environment and extended its efficacy period. This study can also be used as a reference for the preparation of other pesticide microspheres.关键词
氟乐灵/二氧化硅/微球/控释效果/释放动力学Key words
trifluralin/silica/microspheres/control efficacy/release kinetics分类
化学化工引用本文复制引用
钱坤,何林,彭鑫亚,薛霏,谷安宇,李小林,徐雨然,胡月,蓝月,赵恒科..氟乐灵微球的制备及其控释效果研究[J].农药学学报,2017,19(6):776-780,5.基金项目
云南省科技计划项目(2015BB009) （2015BB009）
重庆博士后科学特别基金会资助项目(XM2012003). （XM2012003）
