Polymeric mixtures are important materials, but the control and understanding of mixing behaviour poses problems. The original Flory-Huggins theoretical approach, using a lattice model to compute the statistical thermodynamics, provides the basic understanding of the thermodynamic processes involved but is deficient in describing most real systems, and has little or no predictive capability. We...

Using the Flory-Huggins lattice model, we investigate the threading-unthreading equilibrium in a solution of linear flexible polymer chains and molecular nanotubes formed by covalently bonding the ringlike molecules, such as cyclodextrins (CDs). It is found that the threading-unthreading equilibrium depends on the temperature and the molar concentrations of the ringlike molecules and polymer ch...

Neutron scattering experiments were performed on three molecular weight pairs of symmetric, isotopic blends of poly(dimethylsiloxane) (PDMS) of near-critical composition. Scattering data covering close to 3 decades in size were globally fit using the random phase approximation (RPA) and the Debye function for Gaussian polymer coils using the interaction parameter, ø, and statistical segment len...

This article provides an analysis on published models used to calculate phase separation in aqueous two-phase systems (ATPS) based Flory-Huggins (FH) theory, terms of problem formulation and mathematical solving algorithm. An integrated algorithm is presented, showing different approaches using the FH theory. The involves estimation interchange energy, calculation compositions. Based experiment...

Thermoresponsive polymer segments have been reported to induce lateral microphase separations due their switching transitions from a hydrophilic state hydrophobic one in hydrogels, which result shrinkage and collapse of the networks significantly improved mechanical strength. However, route are assembled into micelles during separations, thermoresponsive toughening mechanisms not fully understo...

Abstract Five simulation models of chloroprene rubber (CR)/polyurethane (PU) with different composition ratios (9/1, 8/2, 7/3, 6/4, 5/5) are constructed and simulated using molecular dynamics (MD) simulation. The effects PU content on blend compatibility mechanical properties investigated solubility parameters, the Flory–Huggins interaction parameter, binding energy, glass transition temperatur...