用一种超临界CO2流体反溶剂的方法,将水溶性高分子聚乙二醇(PEG)成功地沉积在氧化石墨(GO)的表面,通过傅立叶红外光谱、X-射线衍射、扫描电镜测试手段直接和间接地观察PEG在GO上的沉积形式与分布形态,发现PEG沉积在GO的表面以结晶形式呈颗粒状均匀分布在GO的表面,改变了GO的表面化学性质.
The water-soluble polymer PEG was successfully deposited on the surface of the GO through the method of supercritical CO2 anti-solvent,and the sedimentary form and distribution pattern of PEG on the GO were observed by the FTIR,XRD and TEM directly or indirectly.It is found that PEG is deposited on the surface of the GO,on which the PEG is distributed in crystalline particles uniformly,and the surface chemical properties of the GO is changed.