Thermal conductivity of polypropylene-based composites with multiwall carbon nanotubes with different diameter and morphology

• Published in: Journal of alloys and compounds Vol. 586; pp. S440 - S442
• Main Authors: Mazov, I.N., Ilinykh, I.A., Kuznetsov, V.L., Stepashkin, A.A., Ergin, K.S., Muratov, D.S., Tcherdyntsev, V.V., Kuznetsov, D.V., Issi, J.-P.
• Format: Journal Article Conference Proceeding
• Language: English
• Published: Kidlington Elsevier B.V 15-02-2014; Elsevier
• Subjects: Carbon nanotubes; Composite; Concentration (composition); Heat transfer; Morphology; Multi wall carbon nanotubes; Nanotubes; Polymer matrix composites; Polypropylene; Polypropylenes; Thermal conductivity; Carbon nanotubes; Thermal conductivity; Composite; Polypropylene
• ISSN: 0925-8388; 1873-4669
• DOI: 10.1016/j.jallcom.2012.10.167

► MWNT-loaded polypropylene composites were prepared by twin-screw extrusion. ► Two different types of initial and oxidized nanotubes were loaded in composites. ► Low-defective thick nanotubes show higher dispersion state in composites. ► Higher thermal conductivity was obtained for composites with thick nanotubes.
Polypropylene-based composites filled with multiwall carbon nanotubes were prepared using twin-screw extrusion technique. Two types of nanotubes with different diameter, morphology and defectiveness were used as fillers. Influence of MWNT surface composition on properties of the composite was investigated for oxidized nanotubes. Thermal conductivity (TC) of MWNT/PP composites with different MWNT concentration was investigated, showing strong dependence of TC value on the MWNT type and structure, and MWNT content in composite. TC value of 0.55–0.6W/m×K was achieved for MWNT/PP samples filled with 16wt.% of low-defective MWNTs with mean diameter 22nm.