Phase Behavior of Polymer Blends

3D-Ising binary blends BLCT blend components blend miscibility bonds chain Chem Phys chemical coefficient concentration fluctuations correlation length critical behavior critical exponents critical point critical temperature crossover function dependence determined deuterated diblock copolymer Dudowicz energy of mixing enthalpic entropic entropic term equation experimental FH parameter FH theory Flory Flory-Huggins Flory-Huggins theory free energy Freed KF Ginzburg number glass transition temperature Graessley hhPP homopolymer homopolymer blends incompressible interaction energies isotopic Lifshitz line Macromolecules mean field miscibility mixtures molar volume molecular weight monomer monomer structures neutron non-selective solvent norbornene normal stress observed phase behavior phase boundary phase diagram phase separation Phys Rev Lett polymer blends polymer solutions polymer systems polyolefin predicted pressure random copolymer renormalized sample scattering Schwahn shear rate SLCT solubility parameter species spinodal structure factor theoretical thermal composition fluctuations thermal fluctuations thermodynamic tion UCST united atom groups vinyl content XSANS XSANS parameter