title: Interdiffusion in Polymer Film by Ellipsometry.
abstract: The long-time approximation for the time-dependence concentration of solvent into film is derived. The interdiffusion coefficients for different temperatures and the different polystyrene molecular weights were calculated by using asymptotic formulae and time-dependence concentrations of solvent into polymer films. The apparent activation energies of interdiffusion were estimated. Copyright 1999 Academic Press.
authors: Russian Branch RTD Corporation, Bethlehem, Pennsylvania, 18015
authors: NL
authors: Filippova