期刊
POLYMER ENGINEERING AND SCIENCE
卷 55, 期 2, 页码 443-456出版社
WILEY-BLACKWELL
DOI: 10.1002/pen.23904
关键词
-
资金
- Department of Science and Technology (DST), India [08DST016]
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
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