Entropic Mixing of Ring/Linear Polymer Blends
Gary S. Grest, Ting Ge, Steven J. Plimpton, Michael Rubinstein, Thomas C. O’Connor
Abstract
) is measured, and the resulting data are fit to the random phase approximation model to determine χ. In the limit that the two components are the same, χ = 0 for the linear/linear and ring/ring blends as expected, while χ < 0 for the ring/linear blends. With increasing chain stiffness, χ for the ring/linear blends becomes more negative, varying reciprocally with the number of monomers between entanglements. Ring/linear blends are also shown to be more miscible than either ring/ring or linear/linear blends and stay in single phase for a wider range of increasing repulsion between the two components.
Topics & Concepts
Ring (chemistry)Materials sciencePolymerPolymer blendLinear polymerLinear systemChemical physicsThermodynamicsPhysicsMathematicsChemistryComposite materialMathematical analysisCopolymerOrganic chemistryRheology and Fluid Dynamics StudiesPolymer crystallization and propertiesMaterial Dynamics and Properties