Controlled-release of Avermectin from Organically Modified Hydrotalcite-like Compound Nanohybrids
✍ Scribed by Depeng QIU; Yonghai LI; Xiying FU; Zhen JIANG; Xinyan ZHAO; Tian WANG; Wanguo HOU
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 170 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0256-7660
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✦ Synopsis
Abstract
The intercalation of avermectin (AVM) into sodium dodecyl sulfate (SDS) modified hydrotalcite‐like compounds (HTlc) was carried out using an evaporating solvent enhanced intercalation method to obtain AVM‐SDS‐HTlc nanohybrids. It was found that the nanohybrids could well control the release of avermectin, showing the nanohybrids are a potential pesticide controlled‐release formulation. The release of avermectin from AVM‐SDS‐HTlc nanohybrids is dependent on the pH, temperature and the presence of electrolyte in release medium. Acidic medium and higher temperature and the presence of electrolytes may induce the higher release rate of avermectin. The release process of avermectin from AVM‐SDS‐HTlc nanohybrids can be described by pseudo‐first‐order release kinetics, and the activation energy of release is 279 kJ/mol.