Lingappan Niranjanmurthi, Kim Do Hoon, Park Jong Myung, Lim Kwon Taek
J Nanosci Nanotechnol. 2014 Aug;14(8):5713-7. doi: 10.1166/jnn.2014.8823.
Modified graphene oxide/poly(1-vinylimidazole) (mGO/PVIm) composites were prepared via surface-initiated free radical graft polymerization. First, the hydroxyl-enriched GO sheets were functionalized with 3-methacryloxypropyltrimethoxysilane to introduce active-vinyl groups on the GO surfaces. Subsequently, 1-vinylimidazole was chemically grafted and polymerized in the presence of mGO. The chemical structures and morphology of the covalently bonded composites were characterized using FTIR, XPS, TGA, HRTEM, FESEM and XRD measurements. The mGO/PVIm composites exhibit a stable dispersion in water and show high storage stability (>10 days). Furthermore, the morphological analysis showed that mGO was homogeneously dispersed in the polymer matrix.
通过表面引发自由基接枝聚合制备了改性氧化石墨烯/聚（1-乙烯基咪唑）（mGO/PVIm）复合材料。首先，用3-甲基丙烯酰氧基丙基三甲氧基硅烷对富含羟基的氧化石墨烯片进行功能化处理，以在氧化石墨烯表面引入活性乙烯基。随后，在mGO存在下，将1-乙烯基咪唑进行化学接枝和聚合。通过傅里叶变换红外光谱（FTIR）、X射线光电子能谱（XPS）、热重分析（TGA）、高分辨率透射电子显微镜（HRTEM）、场发射扫描电子显微镜（FESEM）和X射线衍射（XRD）测量对共价键合复合材料的化学结构和形态进行了表征。mGO/PVIm复合材料在水中表现出稳定的分散性，并且具有高储存稳定性（>10天）。此外，形态分析表明mGO均匀地分散在聚合物基体中。
