Journal
POLYMER
Volume 55, Issue 13, Pages 3062-3067Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2014.05.002
Keywords
Carbon nanotubes localization; Polymer-matrix blend; Electrical resistivity
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Funding
- German Federal Ministry of Education and Research (BMBF) within the Innovation Alliance Inno.CNT [BMBF 03X0042M]
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Blending of two immiscible polymer matrices can be an effective way to combine favourable properties of both blend partners. The additional incorporation of multiwalled carbon nanotubes (MWCNTs) in such thermoplastic blends may further enhance the blend properties and especially generate electrical conductivity. In the present study, 20 wt.% of non-reactive rubber and rnaleic anhydride functionalized rubber were melt blended with polyamide 6 and 3 wt.% MWCNTs by using different incorporation strategies. For the blends containing non-reactive rubber, the MWCNTs were always localized selectively in the thermodynamically preferred polyamide phase as shown by TEM images and electrical measurements. Interestingly, the different strategies resulted in different localization behaviours of the MWCNTs in case of the reactive rubber. These findings demonstrate the significant influence of maleic anhydride groups of the rubber component on localization of MWCNTs in the different blend phases which results in different values of electrical volume resistivity of the blends. (C) 2014 Elsevier Ltd. All rights reserved.
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