Radiothermoluminescence and Transitions in Polymers |
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Page 144
... atactic sample , the presence of a second scattering maximum at about 22.2 degrees indicates the existence of a state of aggregation or order greater than that attained in the atactic sample , the latter being considered to be ...
... atactic sample , the presence of a second scattering maximum at about 22.2 degrees indicates the existence of a state of aggregation or order greater than that attained in the atactic sample , the latter being considered to be ...
Page 146
... atactic polypropylenes falls dramatically in the low - molecular - weight region [ 103 ] . 8 Heptane - Soluble and -Insoluble Fractions . Atactic Polypropylene . Properties of polypropylene are to a great extent dependent on tacticity ...
... atactic polypropylenes falls dramatically in the low - molecular - weight region [ 103 ] . 8 Heptane - Soluble and -Insoluble Fractions . Atactic Polypropylene . Properties of polypropylene are to a great extent dependent on tacticity ...
Page 149
... atactic polypropylene exhibits glass relaxation and secondary re- laxation around 260 and 220 K , respectively . It is still unclear , however , whether the amorphous phase in isotactic polypropylene can be identified with that in atactic ...
... atactic polypropylene exhibits glass relaxation and secondary re- laxation around 260 and 220 K , respectively . It is still unclear , however , whether the amorphous phase in isotactic polypropylene can be identified with that in atactic ...
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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 |