Melt process and performance of multi‐walled carbon nanotubes reinforced LDPE composites

Abstract

Purpose

To develop a method for the preparation of multi‐walled carbon nanotube reinforced low density polyethylene (LDPE) composites (MWNTs/LDPE), based on ultrasonic vibration, solution casting and melt mixing.

Design/methodology/approach

The preparation for MWNTs/LDPE composites was carried out by vibration of carbon nanotubes (CNT), solution casting and melt mixing for MWNTs and LDPE. The physical chemical properties of the composites were characterised using a variety of techniques including scanning electron microscopy, resistance and tensile measurement.

Findings

It was found that the preparation method reported had significantly improved the dispersion of multi‐walled carbon nanotubes (MWNTs) in LDPE matrix, resulting in the improvement of tensile strength of the composite. The percolation of MWNTs in LDPE matrix was between 10 and 15 wt% (10¹⁶‐10⁸ Ω cm).

Practical implications

The preparation method reported addressed a problem concerning the dispersion of CNT in polymer matrix. The method developed provided a practical and effective solution to such a problem.

Originality/value

The preparation method for MWNTs/LDPE composites involving vibration of CNT, solution casting and melt mixing for MWNTs and LDPE was novel. The method could be adapted for use in industrial scale.

Citation

Zhao, D., Lei, Q., Qin, C. and Bai, X. (2006), "Melt process and performance of multi‐walled carbon nanotubes reinforced LDPE composites", Pigment & Resin Technology, Vol. 35 No. 6, pp. 341-345. https://doi.org/10.1108/03699420610711344