Abstract
The non-isothermal crystallization kinetics of polypropylene/silicon nitride (PP/Si 3N 4) nanocomposites was investigated. The Avrami method, Ozawa method and a method proposed by Mo were applied to the analysis of the non-isothermal crystallization of the PP nanocomposites. Nucleation activity of the Si 3N 4 nanoparticles on the PP matrix was also explored. The nucleation activity was strongest when the Si 3N 4 content was 2 wt%. The effective activation barrier (Δ E) for non-isothermal crystallization was also estimated as a function of the relative degree of crystallinity using the isoconversional analysis of calorimetric data. The value of Δ E was found to vary with the relative degree of crystallinity, as well as with the presence of Si 3N 4 filler.
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