Radiothermoluminescence and Transitions in Polymers |
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Page 146
... fraction decreases with increasing size of the solute molecules . Free energy will thus increase and solution stability will decrease , with the result that increasing the molecular weight of the polymer makes dissolution more difficult ...
... fraction decreases with increasing size of the solute molecules . Free energy will thus increase and solution stability will decrease , with the result that increasing the molecular weight of the polymer makes dissolution more difficult ...
Page 147
... fractions of these materials are dramatic . The soluble fraction of sample B most probably represents completely atactic polypropylene with a narrow maximum in the T region and essentially broader secondary relaxation transition at 213 ...
... fractions of these materials are dramatic . The soluble fraction of sample B most probably represents completely atactic polypropylene with a narrow maximum in the T region and essentially broader secondary relaxation transition at 213 ...
Page 171
... fractions of cis - polybutadiene ( curve 1 ) and is also recalculated to take into account only the gel fraction ( curve 2 ) . For a low concentration of cross - links ( 0 < N ̧ × 10-19 < 0.8 ) , both curves have a com- mon linear ...
... fractions of cis - polybutadiene ( curve 1 ) and is also recalculated to take into account only the gel fraction ( curve 2 ) . For a low concentration of cross - links ( 0 < N ̧ × 10-19 < 0.8 ) , both curves have a com- mon linear ...
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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 |