作　　者： ; ; ; ; ; ;

机构地区： 华南农业大学理学院应用化学系

出　　处： 《农药》 2009年第6期 414-416,428,共4页

摘　　要： 以明胶-阿拉伯胶为壁材、α-三联噻吩溶液（1，2-二氯乙烷为溶剂）为芯材，采用复凝聚法制备α-三联噻吩微胶囊，并对其光稳定性和对白纹伊蚊幼虫的毒杀作用进行研究探讨。结果表明：当明胶-阿拉伯胶（质量比1：1），α-三联噻吩溶液为60g／L，乳化转速为1200r／min，加入25％戊二醛0．6mL和10％单宁酸溶液3mL时，相对载药量可达60．68％；经紫外灯照射17d后，α-三联噻吩降解率小于90％，α-三联噻吩制成微胶囊后光稳定性得到很大的增强；72h后α-三联噻吩微胶囊对白纹伊蚊幼虫的LC50值为0．11mg／kg，表明α-三联噻吩微胶囊在白纹伊蚊幼虫体内释放具有一定的持效性。 α-Terthienyl microcapsules were first prepared by the means of complex-coacervation, with gelatin Arabic gum as the wall materials and solution of α-terthienyl as the core materials（1,2-dichloroethane as the solvents）. Also the light stability of α-terthienyl microcapsules and its activity against the Larvae ofAedes albopictus were studied. The research result showed that when the proportion of gelatin and Arabic gum was 1：1（w：w）, solution of α-terthienyl was 60 g/L, the speed of the emulsification was 1200 r/min. With the addition of glutaraldehyde 0.6ml of 25% and the tannic acid solution 3 mL of 10%, the relative drug loadings can reach 60.68%. After exposure to ultraviolet light for 17 days, the degradation rate of α-terthienyl was less than 90%. The light stability of α-terthienyl was enhanced after it was made into microcapsules. After 72 hour, the LC50 of α-T microcapsules against larvae ofAedes albopictus was 0.11 mg/kg, and the release of α-T microcapsules had a certain sustainability.

关 键 词： 三联噻吩 微胶囊 光稳定性

分 类 号： [TQ450.6]

领　　域： [化学工程]