论文摘要
农药的控制释放技术作为一种新兴技术,可以有效解决可湿性粉剂型农药的释放速度快、有效作用时间短、污染环境的问题。化学型缓释剂是利用农药本身的活性基团(如-COOH、-OH、-SH、-NH2等),在不破坏原化学结构的条件下,自身缩聚或与天然或合成的高分子聚合物直接或间接化学结合,形成可在自然界逐步降解的新的高分子农药。本课题是选以高分子聚合物聚乙烯作为基体材料,利用增溶剂马来酸酐和EVA,使淀粉/PE具有一定的可溶性与相溶性,制备成不同原料的缓释基材。缓释基材作为农药缓释剂的载体材料与农药多菌灵制备成多菌灵缓释农药。通过测试,评价了缓释基材的降解及多菌灵缓释农药的释放情况,及影响缓释性质的各种因素。结果表明,淀粉和PE组成的缓释基材可用作控制农药缓释的降解材料。
论文目录
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