Improved Dispersion Stability of Graphene Oxide in Polymer Nanocomposites via Polymer Adsorption
발표자
박수현 (수원대학교)
연구책임자
심율희 (수원대학교)
공동저자
박수현 (수원대학교), 심율희 (수원대학교)
초록
내용
Graphene oxide (GO) is widely used as a filler in polymer nanocomposites (PNCs), but strong GO – polymer interactions often reduce dispersion stability and degrade composite performance. Improving GO dispersion in polymer matrices therefore remains a key challenge. In this study, GO dispersibility was enhanced by adsorbing water - soluble polymers onto the GO surface. Polymer adsorption was confirmed by thermogravimetric analysis (TGA), and changes in dispersion structure and rheological behavior were analy zed using small - angle X - ray scattering (SAXS). Stable dispersion was achieved even in a high – molecular weight PVA matrix, leading to improved thermal stability of the composites. These results demonstrate that polymer adsorption is an effective strategy fo r controlling dispersion stability and interfacial properties of GO - based nanocomposites.