摘要
为获得防治桃小食心虫Carposina niponensis Walsingham的控释化农药产品,根据温敏材料聚(N-正丙基丙烯酰胺)(PNNPAM)的体积相转变温度与桃小食心虫出土高峰温度相近的特点,采用无皂乳液聚合法制备了高效氯氰菊酯PNNPAM温敏微球,并考察了反应温度及N-正丙基丙烯酰胺(NNPAM)、N,N-亚甲基双丙烯酰胺(MBA)质量浓度对温敏微球制备工艺的影响。结果表明:当反应温度为70~80℃时,可制得粒径为(601.3±5.6)^(638.6±8.9)nm、载药量和包埋率均较高的高效氯氰菊酯PNNPAM温敏微球,且载药量和包埋率随着NNPAM、MBA质量浓度的增加而增大,温度对该微球累积释放率有显著影响。
In order to develop a pesticide product for the control of Carposina niponensis Walsingham, beta-cypermethrin poly （N-propylacrylamide） （PNNPAM） temperature-sensitive microsphere was developed. Given that the volume phase transition of PNNPAM and the peak emergence of C. niponensis happen at similar temperature, the microsphere was prepared by a surfactant-free emulsion polymerization method. Effects of temperature, the concentration of N-propylacrylamide （NNPAM） and the concentration of N,N＇-methylene diacrylamide （MBA） on the preparation of the microsphere were investigated. The results showed that, when the reaction temperature was 70-80 ℃, the particle size of the temperature-sensitive microsphere prepared was （601.3 ± 5.6）-（638.6 ± 8.9） nm, and the drug-loading and embedding rate of the microsphere were both relatively high. The drug-loading and embedding rate increased with the increase of the concentration of NNPAM and MBA. In addition, temperature had a significant influence on the cumulative release rate of microsphere.
作者
高越
郭瑞峰
史高川
张鹏九
刘中芳
范仁俊
GAO Yue GUO Ruifeng SHI Gaochuan ZHANG Pengjiu LIU Zhongfang FAN Renjun(Institute of Plant Protection, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, China Shanxi Key Laboratory of Integrated Pest Management in Agriculture, Taiyuan 030031, China Cotton Research Institute, Shanxi Academy of Agricultural Sciences, Yuncheng 044000, Shanxi Province, China)
出处
《农药学学报》
CAS
CSCD
北大核心
2017年第2期266-272,共7页
Chinese Journal of Pesticide Science
基金
山西省科技攻关项目(20140311007-20)
山西省农业科技成果转化和推广示范工程(2015CGZH041)
公益性行业(农业)科研专项(201103024)
山西省农业科学院科技自主创新能力提升工程(2017-ZZCX-15)
关键词
高效氯氰菊酯
N-正丙基丙烯酰胺
释放性能
温敏微球
制备工艺
beta-cypermethrin
N-propylacrylamide
releasing property
temperature-sensitivemicrosphere
preparation technology
