'Expanded organoclay' assisted dispersion and simultaneous structural alterations of multiwall carbon nanotube (MWCNT) clusters in natural rubber

被引：43
作者：
Rooj, S. [1 ,2 ]
Das, A. [1 ,3 ]
Stoeckelhuber, K. W. [1 ]
Wiessner, S. [1 ,2 ]
Fischer, D. [1 ]
Reuter, U. [1 ]
Heinrich, G. [1 ,2 ]
机构：
[1] Leibniz Inst Polymerforsch Dresden EV, D-01069 Dresden, Germany
[2] Tech Univ Dresden, Inst Werkstoffwissensch, D-01069 Dresden, Germany
[3] Tech Univ Tampere, FI-33101 Tampere, Finland
来源：
COMPOSITES SCIENCE AND TECHNOLOGY | 2015年 / 107卷
关键词：
Carbon nanotubes; Nanoclays; Polymer-matrix composites (PMCs); Synergism; Raman spectroscopy; FATTY-ACID; CLAY; BEHAVIOR; CONDUCTIVITY; COMPOSITES; LENGTH;
D O I：
10.1016/j.compscitech.2014.11.018
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
We report about the successful 'expanded organoclay' (EMt) assisted dispersion of multiwall carbon nanotubes (MWCNT) and the subsequent synergy of both fillers in non-polar natural rubber (NR) compounds. Higher upward shifting of G band and substantial reduction of I-D/I-G ratio of MWCNT in the Raman spectroscopy in the presence of EMt was an indication of strong interactions between MWCNT and EMt particles which further improved the dispersion of MWCNT in the NR matrix. Attributed to the strong affinity of MWCNT with EMt we find significantly exfoliated EMt and homogeneously networked in these composites. The EMt driven dispersion of MWCNT, particularly at high content in the NR, was evidenced from transmission electron microscopy (TEM). The fractal dimension (d(f)) of the MWCNT clusters in NR matrix both in the presence and absence of EMt was predicted utilizing the phenomenological Huber-Vilgis model. Interestingly, a lower value of d(f) of MWCNT clusters was documented in the presence of EMt. Additionally, both the electrical and mechanical percolation threshold of MWCNT was reduced marginally with the addition of EMt. (C) 2014 Elsevier Ltd. All rights reserved.
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页码：36 / 43
页数：8
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