Structure of the polymer–solvent interface

Abstract
The first measurements of ellipticities ρ̄ from the liquid–liquid interface between polymer and solvent mixtures near their consolute points are reported. When scaled according to theory the ellipticities of high molecular weight polystyrene + solvent mixtures are consistent with those from simple, low molecular weight mixtures. The universal value of the scaled ellipticity is approximately 20% lower than that predicted by present theories.