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Publication Citation: Structure of Polystyrene at the Interface With Various Liquids

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Author(s): Clayton S. Yang; P T. Wilson; Lee J. Richter;
Title: Structure of Polystyrene at the Interface With Various Liquids
Published: September 04, 2004
Abstract: Vibrationally resonant sum frequency generation (VR-SFG) is used to determine the structure of the phenyl side groups of deuterated polystyrene at the liquid/solid interface for the nonsolvent liquids: hexane, methanol, ethanol, glycerol, and water. The structure for the three low surface tension (g) liquids: hexane, methanol, and ethanol is similar and only slightly perturbed from that of the air/solid interface. The air interface is highly ordered with the phenyl rings oriented away from the polymer bulk. The low g interfaces are very similar to the air interface. The structure for the two high g liquids: water and glycerol, is similar and reflects a near flat orientation of the phenyl ring.
Citation: Macromolecules
Volume: 37
Issue: 20
Pages: pp. 7742 - 7746
Keywords: interface,liquid,polymer,polystyrene,sum frequency generation,surface
Research Areas: Vibrational, Polymers, Characterization, Surface Physics, Chemical Analysis, Surfaces, Spectroscopy