Position: Home > Articles > Study on properties of carbendazim aqueous suspension stabilized by PVC-co-ACM latex particles
Agrochemicals
2022,61
(2)
96-101
PVC-co-ACM胶乳粒子稳定的多菌灵水悬浮剂及其性能研究
作 者：
王淑芬;齐新慧;丁运生;杨卫平;孙晓红
单 位：
合肥学院能源材料与化工学院绿色助剂创新技术中心;安徽广信农化股份有限公司;合肥工业大学化学与化工学院高分子材料与化工研究所;合肥工业大学材料科学与工程学院
关键词：
水性聚氯乙烯-丙烯酸酯共聚树脂;多菌灵;水悬浮剂;胶乳粒子;稳定剂;Pickering乳液
摘 要：
[目的]为实现农药的低毒高效,以聚合物胶乳粒子替代表面活性剂研制多菌灵(MBC)水悬浮剂。[方法]合成聚氯乙烯-丙烯酸酯共聚树脂(PVC-co-ACM)水性胶乳,根据Pickering乳液稳定机理,以PVC-co-ACM胶乳粒子为稳定剂,制备系列MBC水悬浮剂。通过透射电子显微镜(TEM)分析了PVC-co-ACM胶乳粒子的形貌,通过Zeta电位、粒径分布、悬浮率、表面张力、叶面静态接触角、叶面滞留量等研究了PVC-co-ACM水性胶乳的固含量、pH值对MBC水悬浮剂稳定性的影响,讨论了PVC-co-ACM水性胶乳的固含量与MBC的叶面黏附性和润湿性的关系。[结果]PVC-co-ACM胶乳粒子具有不规则的核壳结构,平均粒径为150 nm左右;PVC-co-ACM水性胶乳的固含量为5%时,MBC水悬浮剂的稳定性最好,对绿萝叶片的润湿效果最佳;固含量为8%时,MBC的叶面滞留量最高;MBC水悬浮剂的热贮存稳定性在体系的pH为9时达到最佳。[结论]将Pickering乳液稳定机理与农药水悬浮剂的研制相结合,可为农药水性制剂开发与高性能化提供新方法。
译 名：
Study on properties of carbendazim aqueous suspension stabilized by PVC-co-ACM latex particles
作 者：
WANG Shu-fen;QI Xin-hui;DING Yun-sheng;YANG Wei-ping;SUN Xiao-hong;Anhui Guangxin Agrochemical Co., Ltd.;Hefei University of Technology,Institute of Polymer Materials and Chemical Engineering, School of Chemistry and Chemical Engineering;Innovation Center for Green Additives Technology,School of Energy Materials and Chemical Engineering, Hefei University;Hefei University of Technology,School of Materials Science and Engineering;
关键词：
polyvinyl chloride-acrylate copolymer;;carbendazim;;aqueous suspension;;latex particle;;stabilizer;;Pickering emulsion
摘 要：
[Aims] This study aims to achieve a carbendazim(MBC) aqueous suspension with low toxicity and high efficiency by using particles of polymer latexes instead of surfactant as stabilizer. [Methods] Polyvinyl chloride acrylate copolymer(PVC-co-ACM) latex was synthesized, and series of MBC aqueous suspensions were prepared with particles of PVC-co-ACM latex as stabilizer based on the stability mechanism of Pickering emulsion. The morphology of particles from the PVC-co-ACM latex was analyzed by transmission electron microscope(TEM). In further, the effects of solid content and pH value of PVC-co-ACM latex on the stability of MBC aqueous suspension were studied by Zeta potential, particle size distribution, suspensibility, the surface tension, leaf static contact angle and leaf retention. The relationship between solid content of PVC-co-ACM latex and leaf adhesion and wettability of MBC was discussed.[Results] The particles of PVC-co-ACM latex had irregular core-shell structure, and the average particle size was about150 nm. When the solid content of PVC-co-ACM aqueous emulsion was 5%, MBC aqueous suspension had the best stability and the best wetting effect on green pineapple leaves. When the solid content was 8%, the leaf retention of MBC was the highest. The thermal storage stability of MBC aqueous suspension reached the best when the pH of the system was 9. [Conclusions] The combination of Pickering emulsion stability mechanism and the development of pesticide aqueous suspending agent could find a new way for the development and high performance of pesticide formulations.
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