title: [FTIR and FT-Raman studies on interactions between water and surfactants in water/KDEHP (75%)-HDEHP (25%)/n-HEPTANE microemulsion systems].
abstract: The conformation of the hydrocarbon chains in water/KDEHP(75%)-HDEHP(25%)/n-HEPTANE microemulsion systems was studied by FT-Raman spectroscopy. The increase in the intensity ratio Ir (I2937/I2875) showed trans to gauche transformation. The hydration of the polar heads in microemulsions was investigated by FT-IR spectroscopy. Some probable structures of KDEHP and HDEHP in microemulsions were proposed.
authors.affiliation: State Key Laboratory of Rare Earth Materials Chemistry and Applications, College of Chemistry and Molecular Engineering, Peking University, 100871 Beijing.
authors.forename: G
authors.initials: G
authors.lastname: Ma
authors.forename: S
authors.initials: S
authors.lastname: Weng
authors.forename: J
authors.initials: J
authors.lastname: Wu
mesh_terms: D004655:Emulsions / Q000737:chemistry; D006536:Heptanes / Q000737:chemistry*; D008968:Molecular Conformation; D017550:Spectroscopy, Fourier Transform Infrared; D013059:Spectrum Analysis, Raman; D013501:Surface-Active Agents / Q000737:chemistry*; D014867:Water / Q000737:chemistry*
chemical_list: D004655:Emulsions; D006536:Heptanes; D013501:Surface-Active Agents; D014867:Water; C028618:n-heptane