Surfactant concentration-dependent effects of pH on the interfacial properties of a splittable surfactant

C. M. Chen, C. H. Chang

研究成果: Article同行評審

4 引文 斯高帕斯(Scopus)

摘要

A systematic study was performed to explore the effects of pH on the emulsifying ability and interfacial tension-lowering activity of a commercial splittable surfactant Triton SP-175 at various concentrations. The findings indicate that the addition of inorganic acids had a pronounced influence on the stability of Triton SP-175-stabilized emulsions, and the influence was greatly enhanced with decreasing pH and surfactant concentration. Moreover, the dynamic interfacial tension-lowering activity of the commercial Triton SP-175 surfactant was strongly inhibited by lowering the pH, resulting in a much slower relaxation in dynamic interfacial tension, with the extent depending on the surfactant concentration. However, its equilibrium interfacial tension-lowering activity was only slightly affected by acids. The data demonstrated that dramatic instability of emulsions stabilized by the splittable surfactant Triton SP-175 was induced by acids, along with considerably destroyed dynamic interfacial activity of the surfactant.

原文English
頁(從 - 到)3726-3731
頁數6
期刊Industrial and Engineering Chemistry Research
39
發行號10
DOIs
出版狀態Published - 2000

All Science Journal Classification (ASJC) codes

  • 化學 (全部)
  • 化學工程 (全部)
  • 工業與製造工程

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