Relaxation in PolymersM. Pietralla, W. Pechhold |
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Page 86
... observed in high molecular weight matrix with those of the network experiments clearly prove the validity of reptation in this limit . The mobility begins to increase when the matrix molecular weight drops below Me . This increase is ...
... observed in high molecular weight matrix with those of the network experiments clearly prove the validity of reptation in this limit . The mobility begins to increase when the matrix molecular weight drops below Me . This increase is ...
Page 125
... observed , with the relaxed dipoles showing a pronounced maximum at an angular distance of 55 ° to N. This maximum , as well as that observed for the 80 MV / m field suggests that stepwise changes in dipole orientation are caused by the ...
... observed , with the relaxed dipoles showing a pronounced maximum at an angular distance of 55 ° to N. This maximum , as well as that observed for the 80 MV / m field suggests that stepwise changes in dipole orientation are caused by the ...
Page 135
... observed [ 36 , 37 , 41 ] . This also holds for polypropyleneglycol ( PPG ) , where this ef- fect has been observed for the first time [ 39 ] . From the foregoing arguments it follows that the fast process in Fig . 13 is the one which ...
... observed [ 36 , 37 , 41 ] . This also holds for polypropyleneglycol ( PPG ) , where this ef- fect has been observed for the first time [ 39 ] . From the foregoing arguments it follows that the fast process in Fig . 13 is the one which ...
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