SYMPOSIA PAPER Published: 28 May 2015
STP157920130188

Physical and Biological Effects of Modified Polysorbate 20

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Three experimental polyoxyethylene sorbitan monolaurate derivatives were synthesized with molecular fingerprinting techniques applied to experimental materials, confirming the target compounds had been produced. Chemical property measurements were compiled that aligned with theoretical predictions and physical property measurements confirmed their intentional differences yielded the anticipated changes in surfactant behavior. Imidacloprid uptake data confirmed penetration of leaf cuticles was enhanced in the presence of polyoxyethylene sorbitan monolaurates with several experimental materials providing uptake equivalent to reference material. Select materials were included in field and greenhouse trials where observations included good biological response with a range of individual herbicides as well as improved control of volunteer glyphosate tolerant corn with mixtures of glyphosate and clethodim over the control nonionic surfactant adjuvant when applied as a tank-added adjuvant. Antagonism of annual grass control was not observed.

Author Information

Penfield, Kevin
Croda Inc., New Castle, DE, US
Young, Bryan
Southern Illinois Univ., Carbondale, IL, US
Young, Julie
Southern Illinois Univ., Carbondale, IL, US
Kruger, Greg
Univ. of Nebraska at Lincoln, North Platte, NE, US
Henry, Ryan
Univ. of Nebraska at Lincoln, North Platte, NE, US
Lindner, Greg
Croda Inc., New Castle, DE, US
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Details
Developed by Committee: E35
Pages: 1–18
DOI: 10.1520/STP157920130188
ISBN-EB: 978-0-8031-7604-1
ISBN-13: 978-0-8031-7603-4