Radiothermoluminescence and Transitions in Polymers |
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Page 23
... observed by Charlesby and Partridge [ 10 ] for a variety of polyethylene samples . They noticed that exposure of the samples to UV radiation gives much weaker low - temperature luminescence ( 77-127 K ) than expo- sure to y - radiation ...
... observed by Charlesby and Partridge [ 10 ] for a variety of polyethylene samples . They noticed that exposure of the samples to UV radiation gives much weaker low - temperature luminescence ( 77-127 K ) than expo- sure to y - radiation ...
Page 124
... observed , among others , the loss peak around 200 K followed by crystallization , as indicated by an increase in modulus . On a second heating , the peak at 200 K had been obscured by crystallinity . The other demonstrations of the ...
... observed , among others , the loss peak around 200 K followed by crystallization , as indicated by an increase in modulus . On a second heating , the peak at 200 K had been obscured by crystallinity . The other demonstrations of the ...
Page 155
... observed . When the original isotropic polypropylene sample was subjected to uniax- ial deformation at room temperature , all three regions of the stress - strain curve were found , with an elongation at break of as much as 500-600 ...
... observed . When the original isotropic polypropylene sample was subjected to uniax- ial deformation at room temperature , all three regions of the stress - strain curve were found , with an elongation at break of as much as 500-600 ...
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Common terms and phrases
activation energy annealing atactic atoms blend changes charge Charlesby Chem chemical cis-polybutadiene components concentration constant cooling copolymer cross-linking crystal decay decrease density depends dielectric distribution dose E/kT electron affinity electron traps emission entropy equilibrium evaluation excited molecules factor first-order fluorescence fraction free volume frequency frequency factor glass glass-transition temperature glow curve glow peak grafting heating increase INTENSITY relative units interaction interfacial intersystem crossing interzonal ionization irradiation isotactic kinetic linear low-temperature luminescence centers LUMINESCENCE INTENSITY relative Macromolecules material maxima maximum mechanical melting method molecular motion molecules Nikolskii nuclear magnetic resonance observed occur oxygen phase phosphorescence Phys polybutadiene polyethylene samples polyisobutylene polypropylene polystyrene position quenching radiation radicals radiothermoluminescence reaction recombination relaxation transitions room temperature secondary relaxation semicrystalline semicrystalline polymers spectra spectroscopy structure temperature thermal thermodynamic thermoluminescence thermoluminescence peaks tion transition temperature trapped electrons untrapping vibrational vinyl vulcanization whereas Zlatkevich
References to this book
Polymer Surfaces and Interfaces II, Volume 2 W. J. Feast,H. S. Munro,R. W. Richards Snippet view - 1993 |