pH-responsive release and washout resistance of chitosan-based nano-pesticides for sustainable control of plumeria rust

IF 4.4 2区化学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

ACS Applied Polymer Materials Pub Date : 2022-12-01 DOI:10.1016/j.ijbiomac.2022.09.144

Yi Zhou , Jiyingzi Wu , Jun Zhou , Sukun Lin , Dongmei Cheng

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引用次数: 11

Abstract

Controlled pesticide release in response to environmental stimuli by encapsulating pesticides in a carrier is a feasible approach to improve the effective utilization rate. In this study, pH-responsive release nanoparticles loaded with penconazole (PE) were prepared by ionic cross-linking of chitosan and carboxymethyl chitosan (PE@CS/CMCS-NPs). PE@CS/CMCS-NPs exhibited good washout resistance and wettability properties, increasing the washing resistance of the pesticide by approximately 20 times under continuous washing. The results of the release experiments showed that nanoparticles had adjustable controlled-release characteristics with the change in pH based on the swelling of nanoparticles. The results of spore germination experiments showed that PE@CS/CMCS-NPs enhanced the inhibitory effect under acidic conditions. The field experiment results showed that PE@CS/CMCS-NPs had a better control effect than PE-aqueous solution, extended the duration and slowed down the dissipation of PE. These results indicated that the CS/CMCS-NPs pH-responsive release system has great potential in the development of an effective pesticide formulation.

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壳聚糖基纳米农药对鸡蛋花锈病的ph响应释放及耐洗性研究

将农药包封在载体中，根据环境刺激控制农药释放，是提高农药有效利用率的可行途径。本研究通过壳聚糖和羧甲基壳聚糖(PE@CS/CMCS-NPs)离子交联制备了ph响应释放的戊康唑(PE)纳米颗粒。PE@CS/CMCS-NPs表现出良好的耐水洗性和润湿性，在连续洗涤下，农药的耐水洗性提高了约20倍。释放实验结果表明，纳米颗粒在溶胀的基础上具有随pH变化可调节的控释特性。孢子萌发实验结果表明，PE@CS/CMCS-NPs在酸性条件下增强了抑菌效果。现场试验结果表明，PE@CS/CMCS-NPs比PE水溶液具有更好的控制效果，延长了PE的持续时间，减缓了PE的耗散。这些结果表明，CS/CMCS-NPs ph响应释放体系在开发高效农药制剂方面具有很大的潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

ACS Applied Polymer Materials Multiple-

CiteScore

7.20

自引率

6.00%

发文量

810

期刊介绍： ACS Applied Polymer Materials is an interdisciplinary journal publishing original research covering all aspects of engineering, chemistry, physics, and biology relevant to applications of polymers. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates fundamental knowledge in the areas of materials, engineering, physics, bioscience, polymer science and chemistry into important polymer applications. The journal is specifically interested in work that addresses relationships among structure, processing, morphology, chemistry, properties, and function as well as work that provide insights into mechanisms critical to the performance of the polymer for applications.

文献相关原料

公司名称	产品信息	采购帮参考价格
上海源叶	Chitosan	￥24.00~￥24532.00