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Structural parameters for the free-standing foam film of hexaethylene glycol monododecyl ether (C12E6) have been measured by using X-ray reflectometry. The re-sults indicate that a five-laminae model corresponds to this inverted bilayer and divides it into five regions. The thick-nesses of the aliphatic chain regions, the polar head-group regions, and the central aqueous core are 0.90, 1.35 and 1.31 nm, respectively; and their corresponding electron densities are 2.4 10-3, 2.6 10-3 and 2.310-3 electron/nm3, respec-tively; the interfacial roughness between adjacent regions is 0.34 nm. The central core of this foam film does not contain free water, its thickness decreased 0.40 nm under the irra-diation of infrared rays due to the loss of structural water.
Structural parameters for the free-standing foam film of hexaethylene glycol monododecyl ether (C12E6) have been measured by using X-ray reflectometry. The re-sults indicate that a five-laminae model corresponds to this inverted bilayer and divides it into five regions. The thick-nesses of the aliphatic chain regions, the polar head-group regions, and the central aqueous core are 0.90, 1.35 and 1.31 nm, respectively; and their corresponding electron densities are 2.4 10-3, 2.6 10-3 and 2.310- 3 electron / nm3, respec-tively; the interfacial roughness between adjacent regions is 0.34 nm. The central core of this foam film does not contain free water, its thickness decreased 0.40 nm under the irra-diation of infrared rays due to the loss of structural water.