二维二硫化钼制备及其对聚碳酸酯热稳定性改性研究
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摘要
采用液相超声剥离法对块状MoS_2进行剥离,制备片层较薄的MoS_2纳米片,与工程塑料聚碳酸酯(PC)通过溶液共混法制备PC/MoS_2纳米复合材料,通过红外(FTIR)、热重分析(TG)和差示扫描量热仪(DSC)等对复合材料的微观结构和热稳定性进行分析。结果表明,添加MoS_2纳米片可以有效改善PC的热稳定性。
The bulk MoS_2 was firstly exfoliated by liquid-phase ultrasonic exfoliation method.The exfoliation route with high yield was exfoliated to prepare a thin layer of MoS_2 nanosheet,the different amounts of PC/MoS_2 nanocomposites were prepared by solution blending of the exfoliated MoS_2 nanosheets and typical thermoplastic polymer matrix polycarbonate(PC) by infrared(FTIR) and thermogravimetric analysis(TG).The microstructure and thermal stability of the composites were analyzed by means of differential scanning calorimetry(DSC).The result showed that the thermal stability of PC can be effectively improved by adding MoS_2 nanosheets.
The bulk MoS_2 was firstly exfoliated by liquid-phase ultrasonic exfoliation method.The exfoliation route with high yield was exfoliated to prepare a thin layer of MoS_2 nanosheet,the different amounts of PC/MoS_2 nanocomposites were prepared by solution blending of the exfoliated MoS_2 nanosheets and typical thermoplastic polymer matrix polycarbonate(PC) by infrared(FTIR) and thermogravimetric analysis(TG).The microstructure and thermal stability of the composites were analyzed by means of differential scanning calorimetry(DSC).The result showed that the thermal stability of PC can be effectively improved by adding MoS_2 nanosheets.
引文
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[7] Tang P,Xiao J J,Zheng C,et al.Graphene-like molybdenum disulfide and its application in optoelectronic devices[J].Acta Physico-Chimica Sinica,2013,29(4):667-677.
[8] Lopez-Sanchez O,Lembke D,Kayci M,et al.Ultrasensitive photodetectors based on monolayer MoS2[J].Nature Nanotechnology,2013,8(7):497-501.
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[10] Wang K,Wang J,Fan J,et al.Ultrafast saturable absorption of two-dimensional MoS2 nanosheets[J].ACS Nano,2013,7(10):9260-9267.
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[18] Rivaton A,Mailhot B,Soulestin J,et al.Comparison of the photochemical and thermal degradation of bisphenol-A polycarbonate and trimethylcyclohexane-polycarbonate[J].Polymer Degradation and Stability,2002,75(1):17-33.
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