Avermectin Loaded Carboxymethyl Cellulose Nanoparticles With Stimuli-Responsive And Controlled Release Properties
文献类型: 外文期刊
作者: Zhu, HX; Shen, Y; Cui, JX; Wang, AQ; Li, NJ; Wang, C; Cui, B; Sun, CJ; Zhao, X; Wang, CX; Gao, F; Zhan, SS; Guo, L; Zhang, L; Zeng, ZH; Wang, Y; Cui, HX
作者机构:
关键词: Avermectin; Esterase-Responsive; Nanoparticles; Anti-Photodegradation
期刊名称: INDUSTRIAL CROPS AND PRODUCTS
ISSN: 0926-6690
年卷期: 2020 年 152 卷
页码:
收录情况: JCR(2021版) ; EI(2021版)
摘要: Polyethylene glycol (PEG) was introduced into carboxymethyl cellulose (CMC) to form hydrophilic chain of PEG-CMC. Avermectin (Avm) was grafted on the long chain of PEG-CMC by use of N, N-dicyclohexylcarbodiimide (DCC) as the dehydrant and 4-dimethylaminopyridine (DMAP) as the catalyst to form the amphiphilic molecule. Then the avermectin nanoparticles was prepared with esterase-responsive sustained release successfully through self-assembly. The size of nanoparticles was less than 400 nm. Avermectin loading was 8% and the degradation rate was less than 50 % under the xenon arc lamp for 72 h. Compared with avermectin technical, it showed an obvious anti-photodegradation advantage. Compared with commercially available water-dispersible granules (WDG), the avermectin nanoparticles had a smaller contact angle on the cucumber leaf surface and there was a significant difference. The toxicity test showed that the nanoparticles have a certain insecticidal effect on the larva of Hyphantria cunea and the sensitivity increased gradually over time.
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