337P日本大胆欧美裸体艺术_久久久久精品无码专区_一个人看的免费视频WWW中文字幕_欧美熟妇精品视频网免费观看
第 45 卷第 2 期Vol. 45 No. 2
2015 年 4 月Apr 2015

所屬欄目:農藥及中間體

呋蟲(chóng)胺微囊的制備及性能表征
任 璐1,2,宋思思1,2,李曉剛1,2* (1. 湖南農業(yè)大學(xué) 植物保護學(xué)院,湖南 長(cháng)沙 410128;2. 湖南省生物農藥與制劑加工工程技術(shù)研究中心,湖南 長(cháng)沙 410128)
摘 要:以殼聚糖和DL-丙交酯合成的兩親性共聚物CS-co-PLA為囊材,利用雙乳法制備了呋蟲(chóng)胺微囊。分別考察了芯材質(zhì)量比、PVA濃度以及外水相體積對微囊粒徑和包封率的影響,并研究了載藥微囊的釋放行為。結果表明:雙乳法制備的呋蟲(chóng)胺微囊粒徑約1.23~3.34 μm,分布較為均勻;具有較高的包封率,并具有良好的緩釋性能,其環(huán)境友好,持效期明顯延長(cháng),適用于害蟲(chóng)的防治。
關(guān)鍵詞:CS-co-PLA;呋蟲(chóng)胺;雙乳法;微囊;緩釋
中圖分類(lèi)號:TQ450.6+8  文獻標識碼:A  文章編號:1009-9212(2015)02-0016-04
The Preparation and Performance of Dinotefuran Microcapsules
REN Lu1,2, SONG Si-si1,2, LI Xiao-gang1,2 (1. College of Plant Protection, Hunan Agricultural University, Changsha 410128, China; 2. Hunan Provincial Engineering & Technology Research Center for Bio-pesticide and Formulating Processing, Changsha 410128, China)
Abstract:The microcapsulated dinotefuran was prepared by double emulsion method using chitosan-lactide polymer(CS-co-PLA)as the coating material which was prepared from chitosan and lactide. The effects of the experimental parameters including the mass ratio of m(dinotefuran)to m(CS-co-PLA), volume of external phase and poly(vinyl alcohol)concentration on the size of microcapsules, the encapsulation efficiency(EE), and the sustained release characteristics of dinotefuran microcapsules were also explored. The experimental results showed that microcapsule particles had a mean diameter of 1.23~3.34 μm; Dinotefuran microcapsules prepared by double emulsion had high encapsulation efficiency and the well-controlled release behavior. It was environmentally friendly and suitable for the pest control.
Key words:CS-co-PLA; dinotefuran; double emulsion; microcapsules; sustained release
基金項目:湖南省自然科學(xué)基金(13JJ5023),中國煙草總公司科技重點(diǎn)項目(110201302014)。
作者簡(jiǎn)介:任 璐(1989-),女,湖南岳陽(yáng)人,碩士研究生,主要從事農藥微膠囊制劑及其加工研究(E-mail:renlu0521@163.com)。
聯(lián) 系 人:李曉剛,男,湖南岳陽(yáng)人,教授,主要從事農藥低毒化應用技術(shù)研究(E-mail:lxgang@aliyun.com)。
收稿日期:2015-03-17
337P日本大胆欧美裸体艺术_久久久久精品无码专区_一个人看的免费视频WWW中文字幕_欧美熟妇精品视频网免费观看