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Positive charge pesticide nanoemulsions prepared by the phase inversion composition method with ionic liquids

机译：用离子液体的相反转组合物制备正电杀虫剂纳米乳液

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摘要

The deposition of pesticide liquid droplets on plant surfaces is of great importance in agricultural application. More than 50% of agrochemicals are lost and wasted during the spraying and wetting processes. Because the surfaces of plant leaves are negatively charged, we produced a kind of positive charge lambda-cyhalothrin loaded oil-in-water nanoemulsion in the system water/EL-80-Span 60/solvent 150# via the phase inversion composition (PIC) method with addition of Ionic Liquids (ILs). The electrostatic interaction between the negative charge surface and positive charge droplet would highly increase the wetting property. The results show that the positive zeta potential of nanoemulsion droplets gained along with the increase concentration of P14444Br, but with the increase concentration of P4444Br, the negative zeta potential of nanoemulsion droplets changed slightly and stayed around -17.8 mV ( without any ILs). Besides, we explored the rheology characteristic of prepared nanoemulsions. Additionally, the contact angle experiments show that the positively charged nanoemulsions have a stronger adsorption on the negative surface and the contact angle decreased along with the increase of positive charge. Significantly, with addition of ILs, the nanoemulsions showed an excellent long-term stability due to electrostatic repulsion between droplets and homogeneous nanoscale droplet size. The highly stable pesticide nanoemulsions are of great importance in practical application and the nanoemulsions prepared with ILs offered a good potential as a carrier for drug delivery.
机译：农药液滴在植物表面上的沉积在农业应用中具有重要意义。在喷涂和润湿过程中，超过50％的农用化学物质丢失和浪费。因为植物叶片表面带来负电荷，我们在系统水/ EL-80-30 /溶剂60 /溶剂150＃中产生了一种阳性电荷Lambda-Cyhalothrin负载的水包油纳米乳液，通过相反转组合物（PIC）添加离子液体（ILS）的方法。负电荷表面和正电荷液滴之间的静电相互作用将高度增加润湿性。结果表明，纳米乳剂液滴的正Zeta电位随着P14444BR的增加而获得，但随着P4444BR的增加，纳米乳液液滴的负Zeta电位略微变化并保持约-17.8mV（没有任何IL）。此外，我们探讨了制备纳米乳液的流变学特征。另外，接触角实验表明，带正电荷的纳米乳液在负面的吸附较强，接触角随着正电荷的增加而降低。显着地，随着ILS的添加，纳米乳液由于液滴与均匀纳米级液滴尺寸之间的静电排斥而显示出优异的长期稳定性。高稳定的农药纳米乳液在实际应用中具有重要意义，并且用ILS制备的纳米乳液具有良好的潜力作为用于药物递送的载体。

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  • 来源
    《RSC Advances》 |2017年第77期|共11页
  • 作者

    Zhao Xin; Zhu Yanqiu; Zhang Chenhui; Lei Jinmei; Ma Yue; Du Fengpei;

  • 作者单位

    China Agr Univ Coll Sci Dept Appl Chem Beijing 100193 Peoples R China;

    China Agr Univ Coll Sci Dept Appl Chem Beijing 100193 Peoples R China;

    China Agr Univ Coll Sci Dept Appl Chem Beijing 100193 Peoples R China;

    China Agr Univ Coll Sci Dept Appl Chem Beijing 100193 Peoples R China;

    China Agr Univ Coll Sci Dept Appl Chem Beijing 100193 Peoples R China;

    China Agr Univ Coll Sci Dept Appl Chem Beijing 100193 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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