Rheological behavior of polypropylene nanocomposites at low concentration of surface modified carbon nanotubes

Selvin P. Thomas, Salihu Adamu Girei, Muataz Atieh, S. K. De, Abdulhadi Al-Juhani

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

This article reports the rheological behavior of nanocomposites of isotactic polypropylene with both unmodified multiwall carbon nanotubes (CNTs) and phenol and 1-octadecanol (C18) functionalized CNT (f-CNT) at 0.1, 0.25, 1.0, and 5.0 wt% of the nanofillers. The incorporation of CNT at low loadings of 0.1 and 0.25 wt% decreases the storage and loss modulus and complex viscosity of the system, especially for the case of using f-CNT. Out of the two types of functionalizations, C18 functionalization registers the lowest modulus and viscosity and displays processing aid behavior at 0.1 wt% loading, which is believed to be due to the disruption of the polymer entanglements. As the nanofiller loading increases to 1 wt%, the disruption of polymer entanglements effect is balanced by the hydrodynamic effect and subsequently neat polypropylene (PP), and the filled PP systems show similar modulus and complex viscosity. As the nanofiller loading increases further to 5 wt%, the hydrodynamic effect becomes the dominating factor, and the modulus and the complex viscosity of the nanofilled system become greater than that of neat PP. Results suggest that the 0.1 wt% loading of C18 f-CNT could be a useful processing aid additive for improving polypropylene processability. POLYM. ENG. SCI., 52:1868-1873, 2012. © 2012 Society of Plastics Engineers

Original languageEnglish
Pages (from-to)1868-1873
Number of pages6
JournalPolymer Engineering and Science
Volume52
Issue number9
DOIs
Publication statusPublished - Sep 2012
Externally publishedYes

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Carbon Nanotubes
Polypropylenes
Carbon nanotubes
Nanocomposites
Viscosity
Polymers
Hydrodynamics
Processing
Phenol
Phenols
Display devices
Plastics
Engineers

ASJC Scopus subject areas

  • Polymers and Plastics
  • Materials Chemistry
  • Chemistry(all)

Cite this

Rheological behavior of polypropylene nanocomposites at low concentration of surface modified carbon nanotubes. / Thomas, Selvin P.; Girei, Salihu Adamu; Atieh, Muataz; De, S. K.; Al-Juhani, Abdulhadi.

In: Polymer Engineering and Science, Vol. 52, No. 9, 09.2012, p. 1868-1873.

Research output: Contribution to journalArticle

Thomas, Selvin P. ; Girei, Salihu Adamu ; Atieh, Muataz ; De, S. K. ; Al-Juhani, Abdulhadi. / Rheological behavior of polypropylene nanocomposites at low concentration of surface modified carbon nanotubes. In: Polymer Engineering and Science. 2012 ; Vol. 52, No. 9. pp. 1868-1873.
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