复凝聚法在农药微胶囊制备中的应用
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- 英文论文题名：Complex Coacervation Method Applied in the Preparation of Pesticide Microcapsule
- 论文作者：孙陈铖 ; 郁倩瑶 ; 冯建国
- 英文论文作者：Chen-Cheng Sun ; Qian-Yao Yu ; Jian-Guo Feng ; School of Horticulture and Plant Protection ; Yangzhou University
- 年：2016
- 作者机构：扬州大学园艺与植物保护学院;
- 论文关键词：复凝聚法 ; 农药微胶囊 ; 应用
- 英文论文关键词：Complex coacervation ; Pesticide microcapsule ; application
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第三十一分会：胶体与界面化学
- 语种：中文
- 分类号：TQ450.6
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第三十一分会 ; 胶体与界面化学
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：223k
- 原文格式：D
- 会议级别：全国
摘要
复凝聚法制备微胶囊主要包括以下步骤:1)将作为壁材的两种水溶性高分子电解质溶于水;2)将芯材溶于有机溶剂作为油相,油水两相经搅拌形成乳状液;3)添加酸溶液调节pH,然后进行冰浴,再添加碱溶液调节pH;4)添加戊二醛进行交联固化,得到固体微胶囊。复凝聚法制备微胶囊具有操作简单易行,壁材易降解,产品外观圆整,载药率和包封率均较高等优点。目前,已有甲基嘧啶磷,嘧菌酯,昆虫激素和昆虫蜕皮激素等多个农药品种采用该方法完成微胶囊化,复凝聚法在农药尤其是生物农药的微胶囊化过程中具有很高的应用潜力。
The preparation of microcapsules by complex coacervation method includes the following steps:1) dissolving two water-soluble polymer electrolyte in water phase as wall material;2) dissolving core material in organic solvent to form the oil phase,forming the emulsion by mixing the emulsion two phases;3) adding an acid solution to adjust the pH of emulsion,and then placing emulsion in the ice bath,adding an alkali solution to adjust pH again;4) adding the crosslinking agent glutaraldehyde to obtain solid microcapsules.The Microencapsulation by complex coacervation method is simple,the wall material is degradable,the appearance of microcapsules is rounded,the drug loading and encapsulation efficiency is higher.Currently,there are multiple varieties of pesticides such as pirimiphos-methyl,azoxystrobin,insect molting hormone and hormone to be microencapsulated by this method,complex coacervation method has potential applications in microencapsulation for pesticide especially for biological pesticides.
The preparation of microcapsules by complex coacervation method includes the following steps:1) dissolving two water-soluble polymer electrolyte in water phase as wall material;2) dissolving core material in organic solvent to form the oil phase,forming the emulsion by mixing the emulsion two phases;3) adding an acid solution to adjust the pH of emulsion,and then placing emulsion in the ice bath,adding an alkali solution to adjust pH again;4) adding the crosslinking agent glutaraldehyde to obtain solid microcapsules.The Microencapsulation by complex coacervation method is simple,the wall material is degradable,the appearance of microcapsules is rounded,the drug loading and encapsulation efficiency is higher.Currently,there are multiple varieties of pesticides such as pirimiphos-methyl,azoxystrobin,insect molting hormone and hormone to be microencapsulated by this method,complex coacervation method has potential applications in microencapsulation for pesticide especially for biological pesticides.
引文
[1]朱银燕,张高勇*,洪昕林,董金凤,张晓光,曾晖.化学学报,2005,63(16):1505-1509.
[2]黄彬彬,骆桂红,童小钰,吴刚*.农药学学报,2009,11(4):493-498.
[2]黄彬彬,骆桂红,童小钰,吴刚*.农药学学报,2009,11(4):493-498.