Critical Role of Spherulite Structure on Behavior of Stabilizers in Poly(propylene) Stabilization |
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Authors: | Toshiaki Taniike Masaki Umemori Fumihiro Kobayashi Minoru Terano |
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Institution: | School of Materials Science, Japan Advanced Institute of Science and Technology, 1-1 Asahidai, Nomi, Ishikawa 923-1211, Japan |
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Abstract: | 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. |
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Keywords: | degradation poly(propylene) spherulite structure stabilization stabilizer |
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