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    STP1579

    Physical and Biological Effects of Modified Polysorbate 20

    Published: 24 February 2015


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    Abstract

    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.

    Keywords:

    tween 20, tween 21, tween 22, tween 23, tween 24, tween 28, polysorbate 20, polysorbate 21, polysorbate 22, polysorbate 23, polysorbate 24, polysorbate 28, polyoxyethylene sorbitan monolaurate, physical properties, characterization, adjuvant


    Author Information:

    Penfield, Kevin
    Croda Inc., New Castle, DE

    Young, Bryan
    Southern Illinois Univ., Carbondale, IL

    Young, Julie
    Southern Illinois Univ., Carbondale, IL

    Kruger, Greg
    Univ. of Nebraska at Lincoln, North Platte, NE

    Henry, Ryan
    Univ. of Nebraska at Lincoln, North Platte, NE

    Lindner, Greg
    Croda Inc., New Castle, DE


    Committee/Subcommittee: E35.22

    DOI: 10.1520/STP157920130188