Journal
POLYMER
Volume 55, Issue 8, Pages 2077-2085Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2014.02.055
Keywords
Poly(ethylene terephthalate); Graphene; Carbon nanotube
Categories
Funding
- University of Minnesota Industrial Partnership for Research in Interfacial and Materials Engineering (IPRIME)
- Toray Industries
- NSF through the MRSEC
- NNIN programs
Ask authors/readers for more resources
Poly(ethylene terephthalate) (PET)-based nanocomposites with graphene or multi-wall carbon nanotubes (MWCNT) were prepared by melt mixing. Aspect ratio, Af, and interparticle distance, A, of graphene in the nanocomposites were obtained from melt rheology and transmission electron microscopy respectively. A of PET/graphene nanocomposites was much smaller than A in PET/MWCNT. For PET/graphene with highest A(f), A became <1 mu m at more than 0.5 wt% graphene. Non-isothermal crystallization behavior from the melt was investigated by differential scanning calorimety. The crystallization temperatures suggest that the nucleation effect of graphene was stronger than that of MWCNT. The half crystallization time of PET/graphene became longer than PET/MWCNT with increasing graphene loading, suggesting that confinement by graphene suppressed the crystal growth rate. XRD analysis indicated that smaller crystals formed in PET/graphene than in PET/MWCNT. From Raman spectroscopy, the pi-pi interaction between PET and graphene was stronger than that between PET and MWCNT. This stronger interaction in PET/graphene appears to result in formation of crystals with higher perfection. (C) 2014 Elsevier Ltd. All rights
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