CNT/ABS nanocomposites by solution processing: Proper dispersion and selective localization for low percolation threshold

• Published in: Composites. Part A, Applied science and manufacturing Vol. 46; pp. 53 - 59
• Main Authors: Al-Saleh, Mohammed H., Al-Anid, Haya K., Hussain, Yazan A.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.03.2013; Elsevier
• Subjects: A. Polymer–matrix composites (PMCs); Applied sciences; B. Electrical properties; B. Microstructures; carbon nanotubes; Composites; dispersibility; E. Casting; electrical conductivity; Exact sciences and technology; Forms of application and semi-finished materials; nanocomposites; Polymer industry, paints, wood; solubility; solvents; Technology of polymers; transmission electron microscopy; B. Electrical properties; A. Polymer–matrix composites (PMCs); E. Casting; B. Microstructures; Solvent effect; Electrical conductivity; Electrical properties; Dispersion degree; Carbon nanotubes; Experimental study; Composite material; A. Polymer-matrix composites (PMCs); ABS; Morphology; Concentration effect; Solubility parameter; Percolation; Nanocomposite; Thermodynamic properties
• ISSN: 1359-835X; 1878-5840
• DOI: 10.1016/j.compositesa.2012.10.010

A nanocomposite of well dispersed carbon nanotube (CNT) in acrylonitrile–butadiene–styrene (ABS) matrix was prepared by solution processing. CNT dispersibility in four different solvents was studied experimentally and theoretically and the best solvent was selected to prepare the nanocomposite. The nanocomposite morphology was examined by transmission electron microscopy and optical microscopy to determine the nanotube level of dispersion and the location of CNT in the ABS matrix. Solubility parameter concept was used to explain the location of CNT in the ABS matrix. As a result of perfect dispersion and selective localization of CNT in the SAN phase of the ABS matrix, the electrical conductivity of the nanocomposite as function of filler content showed that the nanocomposite exhibit a typical percolation behavior with a percolation threshold of only 0.06vol.%.