Tailored dielectric and mechanical properties of noncovalently functionalized carbon nanotube/poly(styrene-b-(ethylene-co-butylene)-b-styrene) nanocomposites
Santosh Kumar Yadav
Department of Textile Engineering, Konkuk University, Seoul 143-701, Korea
Search for more papers by this authorSibdas Singha Mahapatra
Department of Textile Engineering, Konkuk University, Seoul 143-701, Korea
Search for more papers by this authorCorresponding Author
Jae Whan Cho
Department of Textile Engineering, Konkuk University, Seoul 143-701, Korea
Department of Textile Engineering, Konkuk University, Seoul 143-701, Korea===Search for more papers by this authorSantosh Kumar Yadav
Department of Textile Engineering, Konkuk University, Seoul 143-701, Korea
Search for more papers by this authorSibdas Singha Mahapatra
Department of Textile Engineering, Konkuk University, Seoul 143-701, Korea
Search for more papers by this authorCorresponding Author
Jae Whan Cho
Department of Textile Engineering, Konkuk University, Seoul 143-701, Korea
Department of Textile Engineering, Konkuk University, Seoul 143-701, Korea===Search for more papers by this authorAbstract
The preparation of high-dielectric poly(styrene-b-(ethylene-co-butylene)-b-styrene) (SEBS) composites containing functionalized single-walled carbon nanotubes (f-SWCNTs) noncovalently appended with dibutyltindilaurate are reported herein. Transmission electron microscopy and X-ray photoelectron and Raman spectroscopy confirmed the noncovalent functionalization of the SWCNTs. The SEBS-f-SWCNT composites exhibited enhanced mechanical properties as well as a stable and high dielectric constant of approximately 1000 at 1 Hz with rather low dielectric loss at 2 wt% filler content. The significantly enhanced dielectric property originates from the noncovalent functionalization of the SWCNTs that ensures good dispersion of the f-SWCNTs in the polymer matrix. The f-SWCNTs also acted as a reinforcing filler, thereby enhancing the mechanical properties of the composites. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013
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