Radiothermoluminescence and Transitions in Polymers |
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Page 42
... maximum at 240 K , since evacuation at 195 K of the samples treated in air and subsequent cooling to 77 K under vacuum were not accompanied by res- toration of the original intensity of the maximum . Thus oxygen , diffusing in irradi ...
... maximum at 240 K , since evacuation at 195 K of the samples treated in air and subsequent cooling to 77 K under vacuum were not accompanied by res- toration of the original intensity of the maximum . Thus oxygen , diffusing in irradi ...
Page 70
... maximum at a temperature for which wr = 1 . Thus there is a temperature at which the mechanical losses are maximum ; at this temperature , the characteristic time of the external field ( 1 / w ) becomes equal to the internal time scale ...
... maximum at a temperature for which wr = 1 . Thus there is a temperature at which the mechanical losses are maximum ; at this temperature , the characteristic time of the external field ( 1 / w ) becomes equal to the internal time scale ...
Page 149
... maximum . For the heptane - insoluble fraction , the temperature position of this maximum ( 150 K ) , as well as its large width , indicates that it may be composed of two overlapping transitions of about the same intensity located at ...
... maximum . For the heptane - insoluble fraction , the temperature position of this maximum ( 150 K ) , as well as its large width , indicates that it may be composed of two overlapping transitions of about the same intensity located at ...
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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 |