用单宁酸(TA)和叔碳酸缩水甘油酯(CE10)通过环氧开环反应合成单宁基超支化叔碳酸缩水甘油酯(TACE)。将TACE加入氧化石墨烯(GO)的N,N-二甲基甲酰胺(DMF)溶液中,经水合肼还原得到最终产物RGO@TACE。采用傅里叶变换红外光谱、拉曼光谱、X射线衍射、热失重分析、透射电子显微镜等对产物进行表征。结果表明:TACE成功改性石墨烯;石墨烯表面TACE的负载量和反应过程中GO与TA的投料比有关;TACE的存在阻止了石墨烯片层在还原过程中发生堆叠,并且提高了石墨烯在DMF、丙酮等溶剂中的分散性。
Tannic-based hyperbranched tertiary carbonate (TACE) was synthesized with tannic acid (TA) and glycidyl carbonate (CE10) by epoxy ring-opening reaction.TACE was added to the solution of graphene oxide (GO) in N,N-dimethylformamide (DMF).After homogeneous stirring,hydrazine hydrate was added to reduce GO,and then the final products (RGO@TACE) were obtained.The products were characterized by Fourier transform infrared spectroscopy (FT-IR),X-ray diffraction (XRD),Raman spectroscopy (Roman),thermogravimetric analysis (TGA),transmission eletron microscopy (TEM) and so on.The results showed that graphene was successfully modified by TACE.The loading of TACE on the surface of graphene was related to the feeding ratio of GO and TA.The existence of TACE prevented the graphene from stacking during the reduction process and improved the dispersion of graphene in solvent such as acetone and ethanol.
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基金资助
江苏省产学研联合创新基金BY2015019-06
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