期刊
POLYMER TESTING
卷 29, 期 4, 页码 527-533出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymertesting.2010.03.004
关键词
Polypropylene; Silicon nitride; Nanocomposites; Crystallization kinetics; Nucleation activity
The non-isothermal crystallization kinetics of polypropylene/silicon nitride (PP/Si(3)N(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(3)N(4) nanoparticles on the PP matrix was also explored. The nucleation activity was strongest when the Si(3)N(4) content was 2 wt%. The effective activation barrier (Delta 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 Delta E was found to vary with the relative degree of crystallinity, as well as with the presence of Si(3)N(4) filler. (C) 2010 Elsevier Ltd. All rights reserved.
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