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Fracture mechanics of polypropylene: Effect of molecular characteristics, crystallization conditions, and annealing on morphology and impact performance
Author(s) -
Ibhadon A. O.
Publication year - 1998
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/(sici)1097-4628(19980926)69:13<2657::aid-app16>3.0.co;2-r
Subject(s) - polypropylene , crystallization , materials science , composite material , fracture toughness , annealing (glass) , polymer , scanning electron microscope , fracture mechanics , fracture (geology) , toughness , morphology (biology) , polymer science , chemical engineering , biology , engineering , genetics
Fracture mechanics study of polypropylene samples of various molecular weight, obtained under different crystallizations conditions, is reported. Fracture toughness values obtained at high speed of impact as well as at low temperatures increased with increasing molecular weight and decreasing crystallization temperature. Scanning electron micrographs of fractured samples aided in elucidating the fracture mechanism of the polymer studied. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 2657–2661, 1998