Effect of carbon nanotubes on the crystallization and properties of polypropylene

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DOIResolve DOI: http://doi.org/10.1002/polb.20527
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TypeArticle
Journal titleJournal of Polymer Science Part B: Polymer Physics
Volume43
Issue18
Pages24452453; # of pages: 9
AbstractThe effect of different concentrations of single-walled carbon nanotubes (SWNTs) on the nonisothermal crystallization kinetics, morphology, and mechanical properties of polypropylene (PP) matrix composites obtained by melt compounding was investigated by means of X-ray diffraction, differential scanning calorimetry, optical and scanning electron microscopy, and dynamic mechanical thermal analysis. Microscopy showed well-dispersed nanotube ropes together with small and large aggregates. The modulus was found to increase by about 75% at a level of 0.5 wt % nanotubes. The SWNTs displayed a clear nucleating effect on the PP crystallization, favoring the alpha crystalline form rather than the beta form. The crystallization kinetics analysis showed a significant increase in activation energy on incorporating nanotubes. ? 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 2445-2453, 2005
Publication date
AffiliationNational Research Council Canada; NRC Industrial Materials Institute; NRC Steacie Institute for Molecular Sciences
Peer reviewedNo
NPARC number12332881
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Record identifier9041eb51-8683-42db-ac2d-e6ac94db094e
Record created2009-09-10
Record modified2016-05-09
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