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Influence of Natural Weathering on the Physical Properties of Compatibilized Blends of Poly(propylene)/Polyamide‐6
Author(s) -
Mouffok S.,
Kaci M.,
PeuvlerDisdier E.,
Aliouche D.
Publication year - 2012
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.201251106
Subject(s) - polyamide , materials science , ultimate tensile strength , scanning electron microscope , fourier transform infrared spectroscopy , weathering , composite material , polymer blend , izod impact strength test , morphology (biology) , chemical engineering , polymer , copolymer , genetics , geomorphology , biology , engineering , geology
Summary: The present paper deals with the effects of natural weathering on the properties of poly(propylene)/polyamide‐6 blends (70/30 wt %) without and with PP ‐g‐ MA used as the compatibilizer at various content ratios (2, 4 and 6 wt%). The resulted changes in the chemical structure, morphology and mechanical properties of the different blends were analyzed by Fourier transform infrared (FT‐IR) spectroscopy, scanning electron microscopy (SEM), and tensile tests. After one year of outdoor exposure, no important changes in the chemical structure are observed by FT‐IR spectroscopy for both virgin and compatibilized blends. SEM analysis revealed the effectiveness of PP ‐g‐ MA to improve the compatibility of PP/PA‐6 blends. However, the weathering effect on the morphology of both virgin and compatibilized blends resulted in the formation of voids and cracks on the fracture surfaces, while the ultimate tensile properties decreased considerably. The overall results indicated clearly that the presence of PP ‐g‐ MA compatibilizer in PP/PA‐6 blends had no influence on the photo‐oxidation process.