Photodegradation of Polymers: Physical Characteristics and ApplicationsIn this book on physical characteristics and practical aspects of polymer photodegradation Rabek emphasizes the experimental work on the subject. The most important feature of the book is the physical interpretation of polymer degradation, e.g. mechanism of UV/light absorption, formation of excited states, energy transfer mechanism, kinetics, dependence on physical properties of macromolecules and polymer matrices, formation of mechanical defects, practics during environmental ageing. He includes also some aspects of polymer photodegradation in environmental and space condition. |
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Page 71
... surface cracks in polymers photolysed in the presence of hydrogen perox- ide : a poly ( ethylene oxide ) [ 382 ] ; b ... surface ( Fig . 4.9 ) . In the case of polyisoprene , the oxidized amorphous surface has been etched , leaving ...
... surface cracks in polymers photolysed in the presence of hydrogen perox- ide : a poly ( ethylene oxide ) [ 382 ] ; b ... surface ( Fig . 4.9 ) . In the case of polyisoprene , the oxidized amorphous surface has been etched , leaving ...
Page 150
... surface do not cause the etching process , but only melt the polymer 100μm 93.0 × 10.0 kV AM Fig . 8.6 . Scanning electron microscope photomicro- graph of poly ( methyl metha- crylate ) surface after 10 pulses at 248 nm [ 715 ] ( pro ...
... surface do not cause the etching process , but only melt the polymer 100μm 93.0 × 10.0 kV AM Fig . 8.6 . Scanning electron microscope photomicro- graph of poly ( methyl metha- crylate ) surface after 10 pulses at 248 nm [ 715 ] ( pro ...
Page 155
... surface scattering models ( Fig . 8.15 ) which relate the surface roughness and the coherence of the incident beam [ 697 ] . This pattern is restricted to grating - like structures ( Fig . 8.16 ) , and its spacing is dependent on the ...
... surface scattering models ( Fig . 8.15 ) which relate the surface roughness and the coherence of the incident beam [ 697 ] . This pattern is restricted to grating - like structures ( Fig . 8.16 ) , and its spacing is dependent on the ...
Contents
Preface | 1 |
Electronically Excited States in Polymers | 9 |
Electronic Energy Transfer Processes in Polymers | 20 |
Copyright | |
17 other sections not shown
Other editions - View all
Photodegradation of Polymers: Physical Characteristics and Applications Jan F. Rabek Limited preview - 2012 |
Photodegradation of Polymers: Physical Characteristics and Applications Jan F. Rabek No preview available - 2011 |
Common terms and phrases
ablation absorption Allen NS amorphous and/or Appl Polym Sci aromatic bond carbonyl groups CH₂ Chem chemical chromophores chromophoric groups coefficient concentration crosslinking crystalline density depends diffusion dissociation donor and acceptor effect efficiency electron emission energy migration equation etching Europ Polym excimer excited donor excited singlet fluorescence formation formed free radicals free volume glass transition temperature hydroperoxide hydroxy impurities increases initial interaction intersystem crossing irradiation ketone kinetics lifetime Macromolecules main chain scission mechanism molecular weight molecule Norrish type occur oxidation photo-oxidative degradation photochemical photodegradation photoinitiator photolysis Phys plastics po/qo poly poly(methyl methacrylate poly(vinyl poly(vinyl chloride polyethylene polyimide Polym Degrad Stabil Polym Sci Chem polymer alkyl radical polymer chain polymer matrix polypropylene polystyrene POOH quantum yield quenching radiation absorbed rate constant reaction reactive recombination S₁ Sect singlet oxygen solid polymer solvent spin trap stress structure surface T₁ tensile thermal triplet viscosity wavelength