Relaxation in PolymersM. Pietralla, W. Pechhold |
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Page 255
... PTTF The ESR spectra of poly ( tetrathiafulvalenes ) do not show a hyperfine splitting but consists of a superposi- tion of single lines as can be seen in Fig . 1. In the case of the undoped PTTF with CH , and C2H , substi- tuents ...
... PTTF The ESR spectra of poly ( tetrathiafulvalenes ) do not show a hyperfine splitting but consists of a superposi- tion of single lines as can be seen in Fig . 1. In the case of the undoped PTTF with CH , and C2H , substi- tuents ...
Page 257
... PTTF ESR and conductivity studies If PTTF is doped by addition of less than 1 iodine atom per monomer unit an increase in the DC conduc- tivity is observed at each dopant concentration in all PTTF . In the case of the samples A.1 and B ...
... PTTF ESR and conductivity studies If PTTF is doped by addition of less than 1 iodine atom per monomer unit an increase in the DC conduc- tivity is observed at each dopant concentration in all PTTF . In the case of the samples A.1 and B ...
Page 261
... PTTF generating a cation R2 ; in the samples there is a minimum of about 1021 charge carriers per gramm . The radical concentration amounts to 1018 to 1020 spins per gramm ; this means the spin density in the doped PTTF is at least one ...
... PTTF generating a cation R2 ; in the samples there is a minimum of about 1021 charge carriers per gramm . The radical concentration amounts to 1018 to 1020 spins per gramm ; this means the spin density in the doped PTTF is at least one ...
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