期刊
JOURNAL OF MATERIALS CHEMISTRY A
卷 1, 期 37, 页码 11184-11191出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3ta11989k
关键词
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资金
- National Natural Science Foundation of China [51133005, 51121001]
- Fundamental Research Funds for the Central Universities [2013SCU04A02]
- Research Fund for the Doctoral Program of Higher Education [20110181110029, 20120181130013]
The antioxidative effect of chemically reduced graphene oxide (rGO) on the thermal-oxidative stability of polypropylene (PP) was evaluated by thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). rGO was prepared by reduction of graphene oxide (GO) and characterized by atomic force microscopy, X-ray photoelectron spectroscopy and X-ray diffraction. PP/rGO nanocomposites were then prepared without using a compatibilizer by melt blending. It was found that the thermal-oxidative degradation of PP was retarded noticeably by the rGO. The stabilization mechanism of rGO was discussed in terms of the changes in carbonyl bands and oxygen diffusion. It was proposed that the improved thermal-oxidation stability of PP/rGO nanocomposites can be attributed to the decline in both the concentration of peroxy radicals and oxygen permeability. The acceptor-like electronic property afforded by the long conjugated C=C bonds and the barrier effect of rGO were suggested to be responsible for the improved thermal-oxidation stability of PP.
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