Synthesis of Alkyl Polyglycoside and its Application in the Glyphosate

Abstract:

Using sweet potato starch, butanol, and dodecyl alcohol as raw materials, the alkyl indican surfactant was synthesized by two-step reactions with composite catalysts of p-toluene sulfonic acid and citric acid, the synthesis conditions were investigated through orthogonal method and the structure of the product was characterized by IR and mass spectroscopy. The weeding test was also studied by adding the appropriate proportion of alkyl indican surfactant. The results showed that the best technological conditions was: reaction took place under 120 C and last for 4 h, m_{sweet potato starch}:m_n-butanol: m_n-dodecanol=m_sp:m_nb:m_nd =1:2:5, the content of composite catalysts was 1.6 wt% p-toluene sulfonic acid and 10.0 wt% citric acid. The weeding test demonstrated that added 1% APG into the glyphosate could killed almost all weeds in five days and had an excellent weeding efficiency. Compared with spraying glyphosate with no APG, which could decrease the amount of glyphosate used and protect the environment.

• Periodical: Applied Mechanics and Materials (Volumes 716-717)
• Pages: 126-129
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.716-717.126
• Online since: December 2014
• Authors: Guo Mei Xu, Tie Jun Shi*
• Keywords: Alkyl Polyglycoside, Glyphosate, Pesticide Synergist, Sweet Potato Starch

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