Journal
JOURNAL OF APPLIED POLYMER SCIENCE
Volume 132, Issue 7, Pages -Publisher
WILEY
DOI: 10.1002/app.41477
Keywords
amorphous; composites; mechanical properties; thermogravimetric analysis (TGA); thermoplastics
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The poor dispersion of carbon black (CB) in thermoplastic polymers has provided a space for improving the various properties of nanocomposites. In this study, nanoclay (NC) was introduced into CB/thermoplastic composites to improve the dispersion of CB and, finally, to improve the thermal or mechanical performance. We noticed that there was a simultaneous enhancement in the mechanical and thermal performances of the nanocomposites because of the combination of the NC and CB. The information obtained from the mechanical and thermal studies indicated that the properties were improved to an appreciable extent because of the plastic-plastic/CB/NC combination. The tensile strength of polycarbonate (PC) was observed to be enhanced by 9.4% only because of the addition of CB, although when poly(methyl methacrylate) (PMMA) was used as a matrix material along with PC, the tensile strength improved by 25%, although the tensile strength of PMMA is much lower than that of PC. This confirmed that the tensile properties of the polymer composites also depended on the plastic-plastic interaction phenomenon. Moreover, the tensile strengths of the different blended nanocomposites system increased by around 42.5% with the addition of NC. A significant improvement of 22% was achieved in the thermal stability of the PMMA composites with the addition of CB. However, the addition of NC provided further improvement in the thermal decomposition temperature by only 3.7%. This showed that the thermal stability of the polymer nanocomposites was slightly affected by the addition of NC. (C) 2014 Wiley Periodicals, Inc.
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