title: Optical and physical properties of wet-spun films of Na-hyaluronate. Evidence of a phase transition.
abstract: The refractive indices, water content, and volume of wet-spun films of Na-hyaluronate have been measured as a function of relative humidity (rh). These data are used with the Lorentz-Lorenz formula to determine the optical polarizabilities of Na-hyaluronate parallel and perpendicular to the helical axis. The analysis reveals a drop in the optical polarizabilities of approximately 20% between 80 and 88% rh, indicating a phase transition.
authors.affiliation: Department of Physics and Astronomy, University of Toledo, Ohio 43606.
authors.forename: M R
authors.initials: MR
authors.lastname: Flowers
authors.forename: R L
authors.initials: RL
authors.lastname: Marlow
authors.forename: S A
authors.initials: SA
authors.lastname: Lee
authors.forename: N
authors.initials: N
authors.lastname: Lavalle
authors.forename: A
authors.initials: A
authors.lastname: Rupprecht
mesh_terms: D002236:Carbohydrate Conformation; D002240:Carbohydrate Sequence; D006820:Hyaluronic Acid / Q000737:chemistry*; D007202:Indicators and Reagents; D008433:Mathematics; D008962:Models, Theoretical; D008969:Molecular Sequence Data
chemical_list: D007202:Indicators and Reagents; D006820:Hyaluronic Acid