Enhanced mechanical and thermal properties of CTAB functionalized graphene oxide-polyphenylene sulfide composites
作者：Qi Liu, Wei Luo, Yang Chen, Huawei Zou*, Mei Liang*
關鍵字：Graphene oxide (GO), cetyltrimethylammonium bromide (CTAB), polyphenylene sulfide (PPS), intercalation
論文來源：期刊
具體來源：High Performance Polymers, 2017, 29(8): 889-898.
發(fā)表時間：2017年
ABSTRACT: Polymer nanocomposites based on polyphenylene sulfide (PPS) and graphene oxide (GO) modified with cetyltrimethylammonium bromide (CTAB) were prepared. The properties of CTAB-modified graphene oxide (CGO) were investigated by Fourier transform-infrared spectroscopy, X-ray diffraction, and Raman spectroscopy. Results indicated that the ordered structure of GO was impaired by the introduction of CTAB and increased interlayer distance was found for CGO due to the intercalation of CTAB. Mechanical tests revealed that the tensile strength and Young’s modulus of 0.1 wt% CGO/PPS composite were 45.4% and 171.8%, respectively, higher than that of pure PPS matrix, which could be attributed to the entanglement of polymer chains between CTAB and PPS polymer chains. Dynamic mechanical analysis indicated that the glass transition temperature (Tg) of PPS matrix was enhanced due to the addition of CGO and the Tg of 0.5 wt% CGO/PPS composite increased about 10C higher than pure PPS. In addition, the thermal stability of PPS had significant improvement according to the results of thermogravimetric analysis. The residual mass of 0.5 wt% CGO/PPS composite at 800C was 1.22 times higher than that of pure PPS.