Efficient Stabilization and Enhanced Dispersion of Graphene viaHyperbranched Polyethylene-Assisted Liquid Phase Exfoliation

This study investigates the role of hyperbranched polyethylene (HBPE) in stabilizing and dispersinggraphene via liquid phase exfoliation. Three HBPEs variants (۵.۰-HBPE, ۱-HBPE, and ۳-HBPE) weresynthesized under different ethylene gas pressures. Characterization revealed a tree-like copolymerstructure, enhancing graphene stabilization. The HBPEs were used to produce graphene dispersionsin chloroform, evaluated through field-emission scanning electron microscopy (FESEM), andthermogravimetric analysis (TGA). Solubility studies showed a hierarchy of ۵.۰-HBPE > ۱-HBPE >۳-HBPE, with ۵.۰-HBPE yielding the highest concentration of stable graphene dispersions. This studyunderscores the efficacy of ۵.۰-HBPE as a potent stabilizer, offering a promising approach for scalablegraphene production with improved dispersion characteristics.

کلیدواژه ها:

Hyperbranched polyethylene ، Liquid phase exfoliation ، Chloroform ، CH-π interactions ، Exfoliation.