单 位：
华南农业大学天然农药与化学生物学教育部重点实验室;华南农业大学理学院
关键词：
2,5-二苯乙炔基噻吩;微胶囊;界面聚合法;异佛尔酮二异氰酸酯三聚体
摘 要：
以异佛尔酮二异氰酸酯三聚体和二乙烯三胺为原料,通过界面聚合法,制备包含光活化化合物2,5-二苯乙炔基噻吩的聚脲微胶囊悬浮剂。用扫描电镜(SEM)和荧光显微镜(FOM)研究了微胶囊的表面形态和粒径大小,同时对微胶囊的初期包封率、释放特性、热失重行为、生物活性进行了研究。结果表明:微胶囊的表面形态近似球形,初期包封率均高于90%;与原药相比,微胶囊化后的2,5-二苯乙炔基噻吩对菜粉蝶幼虫仍有较好的活性,且持效期延长。
译 名：
The Preparation and Properties of Microcapsule Containing 2,5-Diphenylethynylthiophene
作 者：
YANG Jing-mei1 WANG Zheng-hui2 XU Han-hong 1 WANG Hai-qing21.Key Laboratory of Pesticide and Chemical Biology of Ministry of Education,Guangzhou 510642,China;2.College of Science,South China Agricultural University,Guangzhou 510642,China
关键词：
2,5-diphenylethynylthiophene;microcapsule;interfacial polymerization;trimer of isophorone diisocyanate
摘 要：
Microcapsule suspensions containing photoactivatable compound 2,5-diphenylethynylthiophene were prepared by interfacial polymerization with trimer of isophorone diisocyanate and diethylenetriamine.The surface morphology and diameter of microcapsules were studied by scanning electron microscopy and fluorescence optical microscopy.The release characterization,preliminary microencapsulated efficiency,thermal stability and bioactivity of the microcapsules were investigated.The results showed that microcapsules were spherical,the preliminary microencapsulated efficiency were higher than 90%.Comparing with the 2,5-diphenylethynylthiophene,the microcapsule showed good bioactivity to the second-instar larvae of pieris rapae,but more importantly,the lasting period was extended.
