Effect of elongational flow on morphology and properties of polymer/CNTs nanocomposite fibers
Article first published online: 12 JAN 2010
Copyright © 2010 John Wiley & Sons, Ltd.
Polymers for Advanced Technologies
Volume 22, Issue 12, pages 1612–1619, December 2011
How to Cite
Dintcheva, N. Tz., Arrigo, R., Morreale, M., La Mantia, F. P., Matassa, R. and Caponetti, E. (2011), Effect of elongational flow on morphology and properties of polymer/CNTs nanocomposite fibers. Polym. Adv. Technol., 22: 1612–1619. doi: 10.1002/pat.1648
- Issue published online: 12 JAN 2010
- Article first published online: 12 JAN 2010
- Manuscript Accepted: 8 DEC 2009
- Manuscript Revised: 6 DEC 2009
- Manuscript Received: 28 OCT 2009
- elongational flow;
- MW-carbon nanotubes;
- mechanical properties;
Carbon nanotubes (CNTs) have been attracting increasing interest for the fabrication of polymer-based nanocomposites because of their excellent properties. Traditional methods for the preparation of polymer/CNTs nanocomposites are in situ polymerization, solution blending, and melt mixing. The achievement of a good CNT dispersion and a percolation network is important in order to obtain better mechanical and electrical properties. However, the rheological behavior of polymer/CNTs systems, in particular regarding the extensional flow, has not been much investigated so far. In this work we present, for the first time, rheological data in non-isothermal extensional flow and an investigation on the effect of the extensional flow upon the final properties of several polymer/CNTs systems was carried out as well. Extensional flow led to higher mechanical properties and higher melt strength, but only a slightly reduced breaking stretching ratio. This result could be particularly interesting in the view of potential industrial applications such as film blowing and spinning. Morphological analyses also showed higher degrees of dispersion and variation in the CNTs final dimensions. Copyright © 2010 John Wiley & Sons, Ltd.