Melt-mixed composites of multi-walled carbon nanotubes and thermotropic liquid crystalline polymer: Morphology, rheology and mechanical properties

R. Vivek; Kuruvilla Joseph; George P. Simon; Arup R. Bhattacharyya

doi:10.1016/j.compscitech.2017.07.024

Melt-mixed composites of multi-walled carbon nanotubes and thermotropic liquid crystalline polymer: Morphology, rheology and mechanical properties

R. Vivek, Kuruvilla Joseph, George P. Simon, Arup R. Bhattacharyya

Materials Science & Engineering

Research output: Contribution to journal › Article › Research › peer-review

17 Citations (Scopus)

Abstract

Thermotropic liquid crystalline polymer (LCP) was melt-mixed with multi-walled carbon nanotubes (MWCNTs) in a conical micro-compounder. The state of dispersion of MWCNTs in the LCP matrix was characterized using transmission electron microscopy. FTIR spectroscopic analysis revealed the nature of interaction between the LCP phase and the MWCNTs. The rheological properties of the nanocomposites showed a significant dependence on the MWCNTs content. The ‘network-like’ structures could be assigned to ‘nanotube-nanotube’ and ‘polymer-nanotube’ interactions. Nanoindentation studies indicated an increase in Young's modulus and hardness of LCP/MWCNTs composites. DMTA studies showed an increase in the storage modulus in the composites as a function of nanotube content.

Original language	English
Pages (from-to)	184-192
Number of pages	9
Journal	Composites Science and Technology
Volume	151
DOIs	https://doi.org/10.1016/j.compscitech.2017.07.024
Publication status	Published - 20 Oct 2017

Keywords

LCP
Morphology
MWCNTs
Nanocomposites
Nanoindentation
Rheology

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10.1016/j.compscitech.2017.07.024

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abstract = "Thermotropic liquid crystalline polymer (LCP) was melt-mixed with multi-walled carbon nanotubes (MWCNTs) in a conical micro-compounder. The state of dispersion of MWCNTs in the LCP matrix was characterized using transmission electron microscopy. FTIR spectroscopic analysis revealed the nature of interaction between the LCP phase and the MWCNTs. The rheological properties of the nanocomposites showed a significant dependence on the MWCNTs content. The {\textquoteleft}network-like{\textquoteright} structures could be assigned to {\textquoteleft}nanotube-nanotube{\textquoteright} and {\textquoteleft}polymer-nanotube{\textquoteright} interactions. Nanoindentation studies indicated an increase in Young's modulus and hardness of LCP/MWCNTs composites. DMTA studies showed an increase in the storage modulus in the composites as a function of nanotube content.",

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AU - Joseph, Kuruvilla

AU - Simon, George P.

AU - Bhattacharyya, Arup R.

PY - 2017/10/20

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AB - Thermotropic liquid crystalline polymer (LCP) was melt-mixed with multi-walled carbon nanotubes (MWCNTs) in a conical micro-compounder. The state of dispersion of MWCNTs in the LCP matrix was characterized using transmission electron microscopy. FTIR spectroscopic analysis revealed the nature of interaction between the LCP phase and the MWCNTs. The rheological properties of the nanocomposites showed a significant dependence on the MWCNTs content. The ‘network-like’ structures could be assigned to ‘nanotube-nanotube’ and ‘polymer-nanotube’ interactions. Nanoindentation studies indicated an increase in Young's modulus and hardness of LCP/MWCNTs composites. DMTA studies showed an increase in the storage modulus in the composites as a function of nanotube content.

KW - LCP

KW - Morphology

KW - MWCNTs

KW - Nanocomposites

KW - Nanoindentation

KW - Rheology

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JO - Composites Science and Technology

JF - Composites Science and Technology

SN - 0266-3538

ER -

Melt-mixed composites of multi-walled carbon nanotubes and thermotropic liquid crystalline polymer: Morphology, rheology and mechanical properties

Abstract

Keywords

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