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Critical Role of Spherulite Structure on Behavior of Stabilizers in Poly(propylene) Stabilization
Author(s) -
Taniike Toshiaki,
Umemori Masaki,
Kobayashi Fumihiro,
Terano Minoru
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.201100011
Subject(s) - spherulite (polymer physics) , polypropylene , materials science , homogeneous , dispersion (optics) , polymer chemistry , chemical engineering , stabilizer (aeronautics) , composite material , polymer , optics , thermodynamics , physics , engineering , mechanical engineering
Summary: We found that the spherulite structure of polypropylene (PP) significantly influences the stability of PP by affecting the behavior of stabilizers. Smaller spherulites resulted in more homogeneous dispersion of stabilizers and their slower release into air, so as to elongate the lifetime of PP. Moreover, chemically and physically weak spherulite boundaries were selectively oxidized in the presence of stabilizers. The significance to control higher order structures on the stabilization of PP is reported.