The rheol. properties of two different nanocomposite systems consisting in the dispersion of carbon nanofibers (CNFs) in polypropylene are investigated. The nanoreinforced systems were identically prepd. with two CNFs that differ only in the length of the fibers being otherwise identical to analyze the effect of fiber aspect ratio. Linear dynamic viscoelasticity and the steady-state rheol. of the two different nanocomposites are presented. The system reinforced with CNFs with larger aspect ratio shows several rheol. features that resemble peculiarities of rodlike polymers in the nematic liq. cryst. phase.
Rheology of carbon nanofiber-reinforced polypropylene / Simona, Ceccia; Dino, Ferri; Daniela, Tabuani; Maffettone, PIER LUCA. - In: RHEOLOGICA ACTA. - ISSN 0035-4511. - STAMPA. - 47:(2008), pp. 425-433.
Rheology of carbon nanofiber-reinforced polypropylene
MAFFETTONE, PIER LUCA
2008
Abstract
The rheol. properties of two different nanocomposite systems consisting in the dispersion of carbon nanofibers (CNFs) in polypropylene are investigated. The nanoreinforced systems were identically prepd. with two CNFs that differ only in the length of the fibers being otherwise identical to analyze the effect of fiber aspect ratio. Linear dynamic viscoelasticity and the steady-state rheol. of the two different nanocomposites are presented. The system reinforced with CNFs with larger aspect ratio shows several rheol. features that resemble peculiarities of rodlike polymers in the nematic liq. cryst. phase.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
