| MAREK, A., L. KAPRÁLKOVÁ, P. SCHMIDT, J. PFLEGER, Josef HUMLÍČEK, J. POSPÍŠIL a J. PILAŘ. Spatial resolution of degradation in stabilized polystyrene and polypropylene plaques exposed to accelerated photodegradation or heat aging. Polymer Degradation and Stability. Elsevier Ltd., 2006, roč. 91, č. 2, s. 444-458. ISSN 0141-3910. |
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@article{619884,
author = {Marek, A. and Kaprálková, L. and Schmidt, P. and Pfleger, J. and Humlíček, Josef and Pospíšil, J. and Pilař, J.},
article_number = {2},
keywords = {Photodegradation; Photostabilization; HAS; Thermal aging; Polystyrene; Polypropylene},
language = {eng},
issn = {0141-3910},
journal = {Polymer Degradation and Stability},
title = {Spatial resolution of degradation in stabilized polystyrene and polypropylene plaques exposed to accelerated photodegradation or heat aging},
volume = {91},
year = {2006}
}
TY - JOUR
ID - 619884
AU - Marek, A. - Kaprálková, L. - Schmidt, P. - Pfleger, J. - Humlíček, Josef - Pospíšil, J. - Pilař, J.
PY - 2006
TI - Spatial resolution of degradation in stabilized polystyrene and polypropylene plaques exposed to accelerated photodegradation or heat aging
JF - Polymer Degradation and Stability
VL - 91
IS - 2
SP - 444-458
EP - 444-458
PB - Elsevier Ltd.
SN - 01413910
KW - Photodegradation
KW - Photostabilization
KW - HAS
KW - Thermal aging
KW - Polystyrene
KW - Polypropylene
N2 - Spatial resolution of photo and thermooxidation processes in polypropylene (PP) and polystyrene (PS) plaques was studied by electron spin resonance imaging (ESRI) and attenuated total reflectance Fourier-transform infrared spectroscopy (ATR FTIR). Polymer plaques made of PP and PS stabilized with various systems based on hindered amine stabilizers (HAS) were exposed to accelerated photodegradation and to heat aging in air atmosphere. Concentration profiles of nitroxides generated during the degradation process in the plaques were measured by ESRI, carbonyl and hydroxy groups were identified by ATR FTIR, transparency of the plaques in the actinic part of solar radiation, including a part of UV-B (295e315 nm), full range of UV-A (315e400 nm) and visible radiation was measured by optical techniques. A mechanism of the degradation consistent with all experimental data is suggested.
ER -
MAREK, A., L. KAPRÁLKOVÁ, P. SCHMIDT, J. PFLEGER, Josef HUMLÍČEK, J. POSPÍŠIL a J. PILAŘ. Spatial resolution of degradation in stabilized polystyrene and polypropylene plaques exposed to accelerated photodegradation or heat aging. \textit{Polymer Degradation and Stability}. Elsevier Ltd., 2006, roč.~91, č.~2, s.~444-458. ISSN~0141-3910.
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