Preparation and characterization of modified graphite oxide/poly(propylene carbonate) composites by solution intercalation |
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Authors: | J Bian XW WeiHL Lin SJ GongH Zhang ZP Guan |
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Institution: | a Key Laboratory of Special Materials and Preparation Technologies, School of Materials Science & Engineering, Xi-hua University, Chengdu, Sichuan 610039, People’s Republic of China b Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore 117543, Republic of Singapore |
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Abstract: | Modified graphite oxide (MGO)/Poly (propylene carbonate) (PPC) composites with excellent thermal and mechanical properties have been prepared via a facile solution intercalation method. An intercalated structure of MGO/PPC composites was confirmed by X-ray diffraction and scanning electron microscope. The thermal and mechanical properties of MGO/PPC composites were investigated by thermal gravimetric analysis, differential scanning calorimetric, dynamic mechanical analysis, and electronic tensile tester. Due to the nanometer-sized dispersion of layered graphite in PPC matrix and the strong interfacial interaction between MGO and PPC, the prepared MGO/PPC composites exhibit improved thermal and mechanical properties in comparison with pure PPC. Compared with pure PPC, the MGO/PPC composites show the highest thermal stability and the Tg is 13.8 °C higher than that of pure PPC, while the tensile strength (29.51 MPa) shows about 2 times higher than that of pure PPC when only 3.0 wt.% MGO is incorporated. These results indicate that this approach is an efficient method to improve the properties of PPC. |
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Keywords: | Poly(propylene carbonate) (PPC) Modified graphite oxide (MGO) Composites Solution intercalation Properties |
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