CRYSTALLIZATION BEHAVIOR OF ISOTACTIC POLYPROPYLENE BASED NANOCOMPOSITES

The effect of clay dispersion on the crystallization behavior of isotactic polypropylene (iPP)-based nanocomposites is reported. The T m of the materials was calculated by the method proposed by Marand, the kinetics of crystallization was evaluated by the Avrami analysis and also the Hoffman-Lauritz...

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Bibliographic Details
Published in:Journal of thermal analysis and calorimetry 2007-12, Vol.90 (3), p.849-857
Main Authors: CAUSIN, V, MAREGA, Carla, SAINI, Roberta, MARIGO, A, FERRARA, G
Format: Article
Language:English
Subjects:
Applied sciences
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Polymer industry, paints, wood
Technology of polymers
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Summary:The effect of clay dispersion on the crystallization behavior of isotactic polypropylene (iPP)-based nanocomposites is reported. The T m of the materials was calculated by the method proposed by Marand, the kinetics of crystallization was evaluated by the Avrami analysis and also the Hoffman-Lauritzen theory of crystallization regimes was applied. Montmorillonite was found to depress T m, to enhance the rate of crystallization and to ease the chain folding of macromolecules. These effects were magnified if clay was exfoliated, rather than intercalated.
ISSN:1388-6150
1588-2926
1572-8943
DOI:10.1007/s10973-006-8205-y