Dynamic mechanical analysis, electrical properties and water sorption behaviour, of phenol formaldehyde nanocomposite reinforced with multiwalled carbon nanotubes

•Pure Multiwalled Carbon nanotubes (MWCNT) was used to make phenol–formaldehyde (PF) composite materials.•MWCNT reinforcement improved the electrical (alternating current-AC & direct current-DC) properties, dynamic mechanical analysis of the PF nanocomposites.•MWCNT addition shows reduced water sorption behaviour.•MWCNT dispersion was shown to be improved using transmission electron microscopy (TEM).