Radiothermoluminescence and Transitions in Polymers |
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Page 61
... free volume . The free volume can be defined as the difference between the real volume of a system at a certain temperature and the hypothetical volume which this system would have if its molecules were packed in a perfect crystalline ...
... free volume . The free volume can be defined as the difference between the real volume of a system at a certain temperature and the hypothetical volume which this system would have if its molecules were packed in a perfect crystalline ...
Page 62
Lev Zlatkevich. TOTAL VOLUME FILLED VOLUME Tg TEMPERATURE Fig . 4.3 . Temperature dependence of the total volume , filled volume , and free volume ( shaded area ) for an amorphous polymer . specific volume ( and the free enthalpy ) of ...
Lev Zlatkevich. TOTAL VOLUME FILLED VOLUME Tg TEMPERATURE Fig . 4.3 . Temperature dependence of the total volume , filled volume , and free volume ( shaded area ) for an amorphous polymer . specific volume ( and the free enthalpy ) of ...
Page 65
... free volume , it is reasonable to suppose that below the glass transition , the available free volume is still large enough for the motion of smaller groups . Several types of motion possible below To have been proposed [ 5 ] . A. Local ...
... free volume , it is reasonable to suppose that below the glass transition , the available free volume is still large enough for the motion of smaller groups . Several types of motion possible below To have been proposed [ 5 ] . A. Local ...
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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 |