International Conference on Advances in the Stabilization and Controlled Degradation of Polymers, Volume 1

absorbance absorption accelerated activation additives aging amount antioxidant Appl applied bond carbonyl caused changes Chem chemical color complex compounds concentration considered constant containing correlation curve decomposition decrease degradation dependence determined developed effect electronic emission energy excited experimental exposure factors fiber Figure filters formation formed function groups HALS heat higher hydroperoxides important increase induction period initial intensity involved irradiation kinetic LDPE lead light LLDPE material measured mechanism melt method molecular weight nitroxyls observed obtained occurs outdoor oxidation oxygen peroxide phenolic photooxidation pigments polyethylene polymer polypropylene possible present properties radiation radicals reaction relation relative response ROOH sample Scheme Scott sensitivity shown shows singlet solution spectral stability structure studies surface Table temperature thermal thickness tion torque values various vinyl wavelength weathering Xenon Yellow