Critical polymer-polymer phase separation in ternary solutions

Critical polymer-polymer phase separation in ternary solutions.

We study polymer-polymer phase separation in a common good solvent by means of Monte Carlo simulations of the bond-fluctuation model. Below a critical, chain-length-dependent concentration, no phase separation occurs. For higher concentrations, the critical demixing temperature scales nonlinearly with the total monomer concentration, with a power law relatively close to a renormalization-group ...

Phase-separation Phenomena in Polymer Solutions

Screened hydrodynamic interactions in ternary polymer solutions

This paper discusses the effects of screened hydrodynamic interactions in

Phase Separation in Polymer Solutions Induced by Shear

We numerically investigate nonlinear regimes of shear-induced phase separation in entangled polymer solutions. Use is made of a time-dependent Ginzburg-Landau model describing two fluid dynamics of polymer and solvent. As a new dynamic variable a conformation tensor is introduced to represent chain deformations. Above the coexistence curve a dynamical steady states is attained, where fluctuatio...

Theory of solvation-induced reentrant phase separation in polymer solutions.