Journal
MACROMOLECULAR MATERIALS AND ENGINEERING
Volume 290, Issue 12, Pages 1149-1156Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.200500277
Keywords
crystallization; isotactic poly(propylene); nanocomposites; shear; silver nanoparticles
Ask authors/readers for more resources
The presence of silver nanoparticles (0.01-5 wt.-%) increased the crystallization temperature of isotactic poly(propylene) (iPP) (e.g., a 5 wt.-% content increases the temperature by ca. 7 degrees C) and produced a sharper crystalline peak. It had little effect on the melt rheology of the nanocomposites. The shear-induced crystallization behavior of iPP was accelerated with increasing Ag content and imposed frequency. In addition, the promoting effect of Ag nanoparticles on the overall crystallization behavior was more notable at 140 degrees C than at 130 degrees C. The wide-angle X-ray diffraction scans of iPP nanocomposites with 5 wt.-% Ag crystallized at 130 degrees C clearly presented another peak at a 20 value of 15.8 degrees, which corresponded to a beta-form crystal. The nanocomposites with 5 wt.-% Ag crystallized at 130 degrees C gave double melting peaks at 154 and 166 degrees C. On the other hand, the samples crystallized at 140 degrees C produced two melting peaks at 166 and 172 degrees C. The introduction of as much as 0.1. wt.-% of Ag nanoparticles increased both the tensile strength and elongation at break, but subsequent further addition caused a decrease. In addition, iPP nanocomposites with more than 1 wt.-% Ag exhibited a higher modulus than pure iPP.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available