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Preparation of avermectin microcapsules with anti-photodegradation and slow-release by the assembly of lignin derivatives

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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.

Graphical abstract: Preparation of avermectin microcapsules with anti-photodegradation and slow-release by the assembly of lignin derivatives

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Publication details

The article was received on 05 Dec 2016, accepted on 27 Feb 2017, published on 28 Feb 2017 and first published online on 28 Feb 2017


Article type: Paper
DOI: 10.1039/C6NJ03795J
Citation: New J. Chem., 2017, Advance Article
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    Preparation of avermectin microcapsules with anti-photodegradation and slow-release by the assembly of lignin derivatives

    Z. Liu, R. Qie, W. Li, N. Hong, Y. Li, C. Li, R. Wang, Y. Shi, X. Guo and X. Jia, New J. Chem., 2017, Advance Article , DOI: 10.1039/C6NJ03795J

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