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Itaconic Acid Based Surfactants: I. Synthesis and Characterization of Sodium n-Octyl Sulfoitaconate Diester Anionic Surfactant

Journal of Surfactants and Detergents (2016) 19(2) 373-379
DOI: 10.1007/s11743-015-1769-4
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Abstract

A novel itaconate-based surfactant, namely sodium n-octyl sulfoitaconate diester (SOSID), has been synthesized from itaconic acid (IA) and n-octanol by sulfonation and esterification reaction processes. The effects of reaction temperature, reaction time, molar ratios of n-octanol to IA and the catalyst dosage on the esterification were investigated. The chemical structure of the surfactants SOSID was characterized by means of LC-MS and confirmed by FT-IR and 1H NMR spectroscopy. The surface tension γ and the critical micelle concentration (CMC) were determined as 25.02 mN/m and 4.0 × 10-4 mol/L by using surface tensiometer at 20 °C. Further investigations showed that SOSID possess excellent wetting, emulsifying and lime soap dispersing properties.

Figures

  • Table 1 Effect of molar ratios, reaction temperature and reaction time on sulfonation reaction
  • Table 2 Effects of synthetic conditions on esterification reaction
  • Fig. 2 FT-IR spectrum of SOSID
  • Fig. 1 Mass-spectrogram of SOSID
  • Fig. 5 Contact angles of surfactants solutions dropped on paraffin (C = 1.0 9 10-2 mol/L)
  • Fig. 3 1H NMR spectrum of SOSID
  • Fig. 4 Surface tensions of aqueous SOSID solutions at different concentrations
  • Table 3 Surface-active properties of SOSID Sample cCMC (mN/m) CMC (mol/L) Emulsifying power (%) LSDP (%) Contact angle (h)/

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CITATION STYLE

APA

Xu, J., Cao, F., Li, T., Zhang, S., Gao, C., & Wu, Y. (2016). Itaconic Acid Based Surfactants: I. Synthesis and Characterization of Sodium n-Octyl Sulfoitaconate Diester Anionic Surfactant. Journal of Surfactants and Detergents, 19(2), 373–379. https://doi.org/10.1007/s11743-015-1769-4

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