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 148
... polyimide [ 738 ] 193 nm 248 nm 308 nm 200 240 280 320 Wavelength ( nm ) 360 The amount of energy absorbed by a polymer depends on its absorbance ( A ) . In Fig . 8.2 absorbances of different polymers , i.e. poly ( methyl methacrylate ) ...
... polyimide [ 738 ] 193 nm 248 nm 308 nm 200 240 280 320 Wavelength ( nm ) 360 The amount of energy absorbed by a polymer depends on its absorbance ( A ) . In Fig . 8.2 absorbances of different polymers , i.e. poly ( methyl methacrylate ) ...
Page 155
... polyimide surface due to micro- crack formation and linkage of this damage during irradiation [ 755 ] . ( v ) Surface scattering - a ripple pattern appears on amorphous poly ( ether sulphone ) and polyimide films after a single exposure ...
... polyimide surface due to micro- crack formation and linkage of this damage during irradiation [ 755 ] . ( v ) Surface scattering - a ripple pattern appears on amorphous poly ( ether sulphone ) and polyimide films after a single exposure ...
Page 157
... polyimide layers used in semiconductor device packaging [ 56 , 208 ] . These holes are needed to allow connections to be made to underlying circuitry . Holes opened in the copper layers using conventional lithography define a mask for ...
... polyimide layers used in semiconductor device packaging [ 56 , 208 ] . These holes are needed to allow connections to be made to underlying circuitry . Holes opened in the copper layers using conventional lithography define a mask for ...
Contents
Preface | 1 |
Electronically Excited States in Polymers | 9 |
Electronic Energy Transfer Processes in Polymers | 20 |
Copyright | |
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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 absorption spectrum acceptor molecules Allen NS amorphous and/or Appl Polym Sci bonds carbonyl CH₂ chemical chromophores chromophoric groups coefficient concentration crosslinking decrease density depolymerization diffusion dissociation donor and acceptor efficiency emission energy migration energy transfer process equation etching Europ Polym excimer excited donor excited singlet fluence fluorescence formation free radicals free volume hydrogen hydroperoxide increases initial interaction intersystem crossing irradiation ketone kinetics laser radiation lifetime Macromolecules main chain scission McKellar JF mechanism molecular weight molecule monomer occur oxidation photochemical photodegradation Photodegradation of Polymers photoinitiator photolysis Phys plastics po/qo poly poly(methyl methacrylate polyethylene polyimide Polym Degrad Stabil Polym Sci Chem polymer alkyl radical polymer chain polymer matrix polymeric material polypropylene polystyrene POOH quantum yield quenching radiation absorbed radiative energy transfer rate constant reaction reactive S₁ sample singlet oxygen solvent spin trap stress surface T₁ temperature tensile thermal triplet viscosity wavelength