Relaxation in PolymersM. Pietralla, W. Pechhold |
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Page 42
... viscosity of super- cooled melts [ 51 ] often explained in terms of the phenomenological Vogel - Fulcher or WLF law [ 52 ] . Figure 9 shows viscosity data representative for a broad class of systems , both organic and inorganic , 12 10 ...
... viscosity of super- cooled melts [ 51 ] often explained in terms of the phenomenological Vogel - Fulcher or WLF law [ 52 ] . Figure 9 shows viscosity data representative for a broad class of systems , both organic and inorganic , 12 10 ...
Page 67
... viscosity of the viscoelastic sample layer may be estimated . A comparison between the slopes of the measured and the calculated spatial - frequency responses at low spatial frequencies permits an esti- mate of the gel - layer's shear ...
... viscosity of the viscoelastic sample layer may be estimated . A comparison between the slopes of the measured and the calculated spatial - frequency responses at low spatial frequencies permits an esti- mate of the gel - layer's shear ...
Page 70
... viscosity gives a blending rule for the com- ponents of the complex viscosity in oscillatory shear , which is known to be valid for some polystyrene melts ( Montfort et al . ( 1979 ) Rheol . Acta 18 : 623 ) . This rule reads : = + W2 ...
... viscosity gives a blending rule for the com- ponents of the complex viscosity in oscillatory shear , which is known to be valid for some polystyrene melts ( Montfort et al . ( 1979 ) Rheol . Acta 18 : 623 ) . This rule reads : = + W2 ...
Contents
Preface | 13 |
Dispersive and nondispersive transport processes in polymers | 45 |
Neutron spinecho investigations on the dynamics of polymer systems | 63 |
Copyright | |
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amorphous annealing behavior calculated changes charge carrier Chem Phys coefficient component concentration copolymer correlation function crosslinked crystalline crystallization curves dangling chains defects deformation density diacetylene dielectric dielectric relaxation diffusion dipole distribution dynamic elastic energy equation equilibrium experimental experiments factor film fluctuations free volume frequency glass transition glass transition temperature glassy polymers heating increase intensity interaction layer length linear Macromolecules measured mechanism melt mesomorphic mesophase mobility modes modulus molecular mass molecular weight molecules monomer motion neutron observed obtained orientation parameter PDES peak perature phase phonon Phys Rev plastic polarization polybutadiene Polym Sci polymer polymer chains polymeric properties PTTF PVDF radicals range region relaxation processes Rouse sample scale scattering segment shear shown in Fig spatial light modulator spectra spectrum spherulite structure T₁ temperature dependence theory thermal thermodynamic tion tube ture values viscoelastic viscosity