Synthesis and Performance of Nonionic Gemini Surfactant Di-Glycerol 2,9-Dihexyldecanedioate

Abstract

Nonionic gemini surfactant (G868) was prepared through Claisen condensation, substitution, and transesterification using ethyl caprylate, ethyl formate, 1,6-dibromohexane, and glycerol as materials. The chemical structure of the intermediate and the targeted product were tested by FTIR, ¹HNMR, and elemental analysis, andG868's performances were also examined. The result indicated that the CMC and γ_cmc were 0.004 mmol L⁻¹ and 29.1 m Nm⁻¹, respectively. In comparison with the properties of glycerol caprylate, wetting ability is powerful; emulsifying capability is excellent, and soap dispersancy is better. In addition, it is a nicer anti-dropping agent used in plastic film.

Keywords:

• Anti-fogging property
• nonionic gemini surfactant
• surface property