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Melt mixed composites of poly(ethylene-co-methacrylic acid) ionomers and multiwall carbon nanotubes: Influence of specific interactions

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Title Melt mixed composites of poly(ethylene-co-methacrylic acid) ionomers and multiwall carbon nanotubes: Influence of specific interactions
 
Creator BOSE, S
BHATTACHARYYA, AR
CHAWLEY, M
KODGIRE, PV
KULKARNI, AR
MISRA, A
POTSCHKE, P
 
Subject electrical-conductivity
functionalization
surfactant
rheology
poly(ethylene-co-methacrylic acid) ionomers
mwnt
specific interactions
electrical conductivity
 
Description Multiwall carbon nanotubes (MWNT) were melt-mixed with poly(ethylene-co-methacrylic acid) ionomers (Surlyn) using twin screw microcompounder. The specific interactions existing between the Na+ moieties in Surlyn and the pi electron clouds of MWNT were supported by FTIR and Raman spectroscopic analysis. SAXS scattering patterns were found to be progressively broadened in presence of MWNT in Surlyn/MWNT composites. Morphological investigations revealed selective clustering of MWNT in the vicinity of the ionic domains in Surlyn. Further, the domain size of the ionic clusters was found to increase with increasing MWNT content disrupting the ionic pairs apart in the ionic domain. The melt rheological response of Surlyn was significantly affected in presence of MWNT and was profoundly dependent on the ionic clusters. The state of dispersion of MWNT was assessed by AC electrical conductivity measurements. The associated percolation threshold was observed between 1.5-2 wt% of MWNT.
 
Publisher AMER SCIENTIFIC PUBLISHERS
 
Date 2011-07-17T02:59:23Z
2011-12-26T12:50:05Z
2011-12-27T05:36:03Z
2011-07-17T02:59:23Z
2011-12-26T12:50:05Z
2011-12-27T05:36:03Z
2008
 
Type Article
 
Identifier JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 8(4), 1721-1727
1533-4880
http://dx.doi.org/10.1166/jnn.2008.031
http://dspace.library.iitb.ac.in/xmlui/handle/10054/4600
http://hdl.handle.net/10054/4600
 
Language en