Thermotropic liquid crystalline polymer (TLCP) nanocomposites reinforced with carboxylated multiwall carbon nanotube (c‐MWCNT) were prepared through melt compounding in a twin screw extruder. The thermal stability of TLCP/c‐MWCNT nanocomposites increased with even a small amount of c‐MWCNT added. The rheological properties of the TLCP/c‐MWCNT nanocomposites were depended on the c‐MWCNT contents. The contents of c‐MWCNT have a slight effect on the complex viscosity of TLCP/c‐MWCNT nanocomposites due to the high‐shear thinning of TLCP. The storage modulus of TLCP/c‐MWCNT nanocomposites was increased with increasing c‐MWCNT content. This result can be deduced that the nanotube–nanotube interactions were more dominant, and some interconnected or network‐like structures were formed in the TLCP/c‐MWCNT nanocomposites. Incorporation of very small amount of c‐MWCNT improved the mechanical properties of TLCP/c‐MWCNT nanocomposites, and this was attributed to the reinforcement effect of c‐MWCNT with high aspect ratio and their uniform dispersion through acid treatment in the TLCP matrix.
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Park et al. (2008) studied this question.
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