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Physical and Chemical Characteristics of Multi-walled Carbon Nanotube (MWCNT) with Acid-treatment and Coupling Agent on the Properties of Styrene Butadiene Rubber (SBR)  

Song, Sung-Ho (NEXEN Tire Corporation R&D Center)
Jeong, Ho-Kyun (NEXEN Tire Corporation R&D Center)
Kang, Yong-Gu (NEXEN Tire Corporation R&D Center)
Cho, Choon-Tack (NEXEN Tire Corporation R&D Center)
Publication Information
Polymer(Korea) / v.34, no.2, 2010 , pp. 108-115 More about this Journal
Abstract
The effects of acid-treated MWCNT and coupling agent on properties of MWCNT/SBR are investigated in this work. The MWCNTs oxidized using sulfuric and nitric acids were analyzed by the Raman scattering and Fourier transformed infrared spectroscopy(FT-IR). The FT-IR results indicate the presence of -COOH groups in the treated samples, and Raman spectroscopy of the acidtreated MWCNTs further corroborates the formation of surface defect due to the introduction of carboxyl groups. And the nanocomposites reinforced with MWCNTs were characterized extensively using the scanning electron microscopy(SEM), electrical conductivity, thermal conductivity, and tensile properties measurements. The results showed that nanocomposites onto acid-treated MWCNTs enhanced mechanical properties compared to those containing MWCNTs without acid treatment. These findings confirmed the improved interfacial interactions between MWCNTs and SBR arising from the coupling agents. But the electrical and thermal conductivity of nanocomposites decreased due to the chopping and formation of surface defects of MWCNTs.
Keywords
multi-walled carbon nanotube(MWCNT); styrene butadiene rubber(SBR); coupling agent;
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