Preparation of avermectin microcapsules with anti-photodegradation and slow-release by the assembly of lignin derivatives. (28th March 2017)

• Record Type: Journal Article
• Authors: Liu, Zhiqing; Qie, Runtian; Li, Wei; Hong, Nanlong; Li, Yuan; Li, Cuihua; Wang, Rongjie; Shi, Yulin; Guo, Xuhong; Jia, Xin
• Is Part Of: New journal of chemistry. Volume 41:Number 8(2017)
• Page Start: 3190
• Page End: 3195
• Publication Date: 2017-03-28
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c6nj03795j
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : A facile, environmentally friendly, and low-cost strategy for affording stability and the slow-release of avermectin based on self-assembly of lignin derivatives is described. Abstract : Avermectin (Av) is a highly efficient pesticide against a variety of nematodes and is widely used in agriculture. However, it is susceptible to oxidation and photolysis, resulting in instability under UV irradiation and a short half-life. Herein, a rapid and low-cost approach was reported on preparing alkyl chain-coupled lignosulfonate-based polymer coated Av (Av@ALS) microcapsules by the self-assembly of natural and environmentally friendly lignin derivatives. The morphology and UV-shielding of Av@ALS microcapsules were investigated by SEM, EDX, TEM, DLS, FTIR and UV-vis spectroscopy. The self-assembly process and release kinetics of Av@ALS microcapsules were also studied in detail. The results show Av@ALS microcapsules have remarkable avermectin loading ability (up to 57.01% (w/w)), excellent slow-release properties and especially superior UV-shielding properties. The ease and low cost of the assembly process, combined with the natural materials, allows the coating method to open a new avenue for the field of efficient utilization of pesticide.