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| Preparation and wetting property of environmentfriendlyβ-cypermethrin EW |
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| DOI： |
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| Abstract: |
| Using plant source of fatty acid methyl esters as solvent，green surfactants as emulsifier，
environment-friendly β-Cypermethrin EW was prepared. Optimal formualtion was obtained by screening of the
solvent and surfactant：β-Cypermethrin 5%，laurate methyl 14.5%，APG-AEO3（6∶4 by mass）5%，deionized
water was added to 100%. On this base，the wetting ability of the optimized EW was studied through dynamic surface
tension and dynamic contact angle measurements using ordinary and commercial β-Cypermethrin EWs as comparison
samples. The results showed that the surface tension and the contact angle of the 500-fold dilured sample of the
optimized EW decayed more quickly with time increasing campared with ordinary and commercial β-Cypermethrin
EWs. The excellent wetting and spreading properties made the EW easily adhered and spreaded on the leaf surface to
maximize biological activity. |
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