Effect of montmorillonite and shear stress on the orientation of single walled carbon nanotubes in polypopylene composite fiber |
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| Authors: | Du Sik Jeong Won Seok Choi Yong Taek Lee Sung Hun Ryu |
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| Affiliation: | Department of Chemical Engineering, College of Engineering, Kyung Hee University, , Yongin, Kyunggido, Korea |
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| Abstract: | The effect of montmorillonite and shear stress on the orientation of single walled carbon nanotubes and properties of SWCNT/MMT/polypropylene composite was investigated. The effect of functionalization of SWCNT on the orientation was also investigated. Polarized Raman spectroscopy was used to analyze the orientation of the SWCNTs. Orientation of SWCNTs was dependent on the experienced shear stress and functionalization of SWCNTs. The addition of MMT also improved the orientation of functionalized SWCNTs, while its effect was not significant for pristine SWCNTs. The existence of critical shear stress was observed for the orientation of the SWCNTs and the orientation of SWCNTs was found to occur more efficiently above this critical shear stress. Melt viscosity and heat of fusion data also confirmed that the addition of MMT‐induced improved orientation and dispersion of SWCNTs, especially for functionalized SWCNTs. POLYM. ENG. SCI., 54:2455–2459, 2014. © 2013 Society of Plastics Engineers |
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