Relaxation in polymers

amorphous annealing behavior birefringence blends calculated changes charge carrier Chem Phys coefficient component concentration copolymer correlation function crosslinked crystalline crystallization curves dangling chains defects deformation demixing density dielectric dielectric relaxation diffusion dipole distribution dynamic eirr elastic energy equation equilibrium experimental experiments factor film fluctuations free volume frequency glass transition temperature glassy polymers heating increase intensity interaction isotropic lattice layer length linear Macromolecules mass measured mechanism mesomorphic mesophase modes modulus molecular mass molecular weight molecules monomer motion neutron neutron scattering observed obtained orientation parameter PDES peak perature phase phonon Phys Rev plastic polarization poling field polybutadiene Polym Sci polymer polymeric properties PTTF PVDF radicals range region relaxation processes Rouse sample scale scattering segmental shear shown in Fig spatial light modulator spectra spectrum spherulite structure temperature dependence theory thermal thermodynamic tion tube ture values viscoelastic viscosity