Development of Pyridinium Salt Functionalized Graphene Oxide and Polyimide Nanocomposites
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초록
내용
This study development of a new reduced graphene oxide that can interact with various polymer matrices by controlling the polarity through a facile ion exchange in the presence of pyridine salts. In addition, a polyimide nanocomposite is prepared by using the reduced graphene thus prepared as a filler. X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), Raman spectroscopy and transmission electron microscopy (TEM) confirm the successful incorporation of pyridine salts into graphene oxide nanosheets. In a tensile strength test using a universal testing machine, the tensile strength of the polyimide nanocomposite increased by up to 115% at a graphene filler content of 1 wt%.