Improvement of carbon nanotubes dispersion by chitosan salt and its application in silicone rubber

Songmin Shang, Lu Gan, Marcus Chun wah Yuen

Research output: Journal article publicationJournal articleAcademic researchpeer-review

43 Citations (Scopus)


We have prepared chitosan hydrochloric acid salt and investigated its assistance in improving the dispersion of carbon nanotubes in different solvents and silicone rubber in this study. It was found that the dispersions of carbon nanotubes in some solvents improved to some extent. Long-time stable dispersions were achieved in water and chloroform, even after being placed for 3. months and a following centrifuging (10,000. rpm for 10. min). It was also found that treated carbon nanotubes could be dispersed in the silicone rubber homogeneously based on SEM and XRD analysis. The incorporation of carbon nanotubes enhanced the thermal stability of the silicone rubber. They also significantly improved the mechanical properties of the silicone rubber matrix. From the FTIR spectra, it was believed that chitosan hydrochloric acid salt adsorbed on the surface of the carbon nanotube and then interacted with silicone rubber matrix, resulting in the enhancement of dispersion of carbon nanotubes. From this study, chitosan hydrochloric acid salt was an easy available material which could be used as the treating agent to enhance the dispersion of carbon nanotubes in solvents and polymer matrixes, with improved thermal and mechanical properties in the resulting nanocomposites.
Original languageEnglish
Pages (from-to)129-134
Number of pages6
JournalComposites Science and Technology
Publication statusPublished - 4 Sept 2013


  • A. Carbon nanotubes
  • A. Nano composites
  • A. Polymer-matrix composites (PMCs)

ASJC Scopus subject areas

  • Engineering(all)
  • Ceramics and Composites


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