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Dispersion, Migration, and 'Network-Like' Structure Formation of Multiwall Carbon Nanotubes in Co-Continuous, Binary Immiscible Blends of Polyamide 6 and Acrylonitrile-Butadiene-Styrene Copolymer During Simultaneous Melt-Mixing

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Title Dispersion, Migration, and 'Network-Like' Structure Formation of Multiwall Carbon Nanotubes in Co-Continuous, Binary Immiscible Blends of Polyamide 6 and Acrylonitrile-Butadiene-Styrene Copolymer During Simultaneous Melt-Mixing
 
Creator POYEKAR, AV
BHATTACHARYYA, AR
KHARE, RA
PANWAR, AS
SIMON, GP
DHAR, S
MISHRA, JK
 
Subject POLYMER BLENDS
ELECTRICAL-CONDUCTIVITY
CRYSTALLIZATION BEHAVIOR
SELECTIVE LOCALIZATION
MECHANICAL-PROPERTIES
FILLED POLYCARBONATE
MORPHOLOGY
NANOCOMPOSITES
POLYPROPYLENE
COMPOSITES
 
Description Multiwall carbon nanotubes (MWNTs) were melt-mixed in polyamide 6 (PA6) and acrylonitrile-butadiene-styrene (ABS) copolymer blends using a simultaneous mixing protocol in order to investigate the state of dispersion of MWNTs in PA6/ABS blends. The blend composition was varied from 40/60 (wt/wt) to 60/40 (wt/wt) in PA6/ABS blends, which showed co-continuous' morphology in the presence of MWNTs. State of dispersion of MWNTs in these blends was assessed through bulk electrical conductivity measurements, morphological analysis, solution experiments, and UV-vis spectroscopic analysis. MWNTs were subsequently modified with a novel organic modifier, sodium salt of 6-aminohexanoic acid (Na-AHA), to improve the state of dispersion of MWNTs. Blends with unmodified MWNTs exhibited the DC electrical conductivity in the range approximate to 10(-11) to approximate to 10(-5) S/cm, whereas blends with Na-AHA-modified MWNTs exhibited DC electrical conductivity in the range approximate to 10(-7) to approximate to 10(-5) S/cm. The reduction in MWNTs agglomerate' size (approximate to 73.7 m for 40/60 blend with unmodified MWNTs to approximate to 59.9 m in the corresponding blend with Na-AHA-modified MWNTs) was observed through morphological analysis. The rheological studies showed increased complex viscosity and storage moduli in lower frequency region in case of blends with Na-AHA-modified MWNTs confirming a refined network-like' structure of MWNTs. POLYM. ENG. SCI., 55:443-456, 2015. (c) 2014 Society of Plastics Engineers
 
Publisher WILEY-BLACKWELL
 
Date 2016-01-14T10:44:43Z
2016-01-14T10:44:43Z
2015
 
Type Article
 
Identifier POLYMER ENGINEERING AND SCIENCE, 55(2)443-456
0032-3888
1548-2634
http://dx.doi.org/10.1002/pen.23904
http://dspace.library.iitb.ac.in/jspui/handle/100/17391
 
Language en