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Type: Journal article
Title: Coincorporation of nano-silica and nano-calcium carbonate in polypropylene
Author: Zhang, S.
Zhu, A.
Dai, S.
Citation: Journal of Applied Polymer Science, 2011; 121(5):3007-3013
Publisher: John Wiley & Sons Inc
Issue Date: 2011
ISSN: 0021-8995
Statement of
Shilian Zhang, Aiping Zhu, Sheng Dai
Abstract: <jats:title>Abstract</jats:title><jats:p>In this study, various polypropylene (PP) nanocomposites were prepared by melt blending method. The effects of different spherical nanofillers, such as 50 nm CaCO<jats:sub>3</jats:sub> and 20 nm SiO<jats:sub>2</jats:sub>, on the linear viscoelastic property, crystallization behavior, morphology and mechanical property of the resulting PP nanocomposites were examined. Rheological study indicated that coincorporation of nano‐SiO<jats:sub>2</jats:sub> and nano‐CaCO<jats:sub>3</jats:sub> favored the uniform dispersion of nanoparticles in the PP matrix. Differential scanning calorimeter (DSC) and polarizing optical microscopy (POM) studies revealed that the coincorporation of SiO<jats:sub>2</jats:sub> and CaCO<jats:sub>3</jats:sub> nanoparticles could effectively improve PP crystallizability, which gave rise to a lower supercooling temperature (Δ<jats:italic>T</jats:italic>), a shorter crystallization half‐life (<jats:italic>t</jats:italic><jats:sub>1/2</jats:sub>) and a smaller spherulite size in comparison with those nanocomposites incorporating only one type of CaCO<jats:sub>3</jats:sub> or SiO<jats:sub>2</jats:sub> nanoparticles. The mechanical analysis results also showed that addition of two types of nanoparticles into PP matrix gave rise to enhanced performance than the nanocomposites containing CaCO<jats:sub>3</jats:sub> or SiO<jats:sub>2</jats:sub> individually. © 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2011</jats:p>
Keywords: thermoplastic resin
rheological properties
Rights: Copyright © 2011 Wiley Periodicals, Inc.
DOI: 10.1002/app.33925
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Chemical Engineering publications

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