Radiothermoluminescence and Transitions in Polymers |
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Page 94
... transition at 110 K clearly is a secondary transition ( the glass - transition temperature of polystyrene is approximately 370 K ) . The variations in activation energy and frequency factor in the temperature region of the glass transition ...
... transition at 110 K clearly is a secondary transition ( the glass - transition temperature of polystyrene is approximately 370 K ) . The variations in activation energy and frequency factor in the temperature region of the glass transition ...
Page 104
... glass - transition temperature shift according to the following em- pirical equation [ 6 ] : Mc = 3.9 × 104 Tg - T80 ( 6.3 ) where T and Tgo are the glass - transition temperatures of cross - linked and un - cross- linked polymer ...
... glass - transition temperature shift according to the following em- pirical equation [ 6 ] : Mc = 3.9 × 104 Tg - T80 ( 6.3 ) where T and Tgo are the glass - transition temperatures of cross - linked and un - cross- linked polymer ...
Page 179
Lev Zlatkevich. Table 6.10 . Relaxation transition temperatures of dimethylsiloxane ( DMS ) -methyl- trifluoropropylsiloxane ( MTFPS ) copolymers determined by different methods Dilatometry Radiothermoluminescence Secondary Glass Secondary ...
Lev Zlatkevich. Table 6.10 . Relaxation transition temperatures of dimethylsiloxane ( DMS ) -methyl- trifluoropropylsiloxane ( MTFPS ) copolymers determined by different methods Dilatometry Radiothermoluminescence Secondary Glass Secondary ...
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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 |