Design, development and evaluation of thermal properties of polysulphone–cnt/gnp nanocomposites

Hafiz Muzammil Irshad, Abbas Saeed Hakeem*, Kabeer Raza, Turki Nabieh Baroud, Muhammad Ali Ehsan, Sameer Ali, Muhammad Suleman Tahir

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

13 Scopus citations


Polysulphone (PSU) composites with carbon nanotubes (PSU-CNT) and graphene nano-platelets (PSU-GNP) were developed through the solution casting process, using various weight load percentages of 1, 3, 5, and 10 wt% of CNT and GNP nanofillers. The microstructural and thermal properties of the PSU-based composites were compared. The microstructural characterisation of both composites (PSU-CNTs and PSU-GNPs) showed a strong matrix–filler interfacial interaction and uniform dispersion of CNTs and GNPs in the PSU matrix. The analysis demonstrated that both the thermal conductivity and effusivity improved with the increase in the weight percentage (wt%) of CNTs and GNPs because of the percolation effect. The polysulphone-based composite containing 10 wt% CNTs showed a remarkably high thermal conductivity value of 1.13 (W/m·K), which is 163% times higher than pure PSU. While the glass transition temperature (Tg) was shifted to a higher temperature, the thermal expansion was reduced in all the PSU-CNT and PSU-GNP composites. Interestingly, the CNTs allowed homogeneous distribution and a reasonably good interfacial network of interaction with the PSU matrix, leading to better microstructural characteristics and thermal properties than those of the PSU-GNP composites. The findings highlight the importance of controlling the nature, distribution, and content of fillers within the polymeric matrix.

Original languageEnglish
Article number2080
Issue number8
StatePublished - Aug 2021

Bibliographical note

Publisher Copyright:
© 2021 by the authors. Licensee MDPI, Basel, Switzerland.


  • Carbon nanotube
  • Graphene platelet
  • Nanocomposite
  • Thermal properties
  • polysulphone

ASJC Scopus subject areas

  • General Chemical Engineering
  • General Materials Science


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