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Updated: Jan 26, 2026
Preparation of Carbon Nanosheets at Room Temperature
Published on: March 8, 2016
Structure and Mechanical Performance of Poly(vinyl Alcohol) Nanocomposite by Incorporating Graphitic Carbon Nitride
Shaojian He1, Jiaqi Wang2, Mengxia Yu3
1Beijing Key Laboratory of Energy Safety and Clean Utilization, North China Electric Power University, Beijing 102206, China. heshaojian@ncepu.edu.cn.
Abstract:
Owing to the high aspect ratio, the two-dimensional (2D) inorganic nanofillers have attracted extensive interest in the field of polymer reinforcement. In this work, graphitic carbon nitride (g-C₃N₄) nanosheets were obtained via thermal condensation of melamine and were then ultrasonically exfoliated in water, which was confirmed by atomic force microscopy (AFM) and TEM. Poly(vinyl alcohol) (PVA)/g-C₃N₄ nanocomposites were achieved by solution casting using water as the solvent. The structure and mechanical performance of PVA/g-C₃N₄ nanocomposites were studied. It was found that the g-C₃N₄ nanosheets were well dispersed in the PVA matrix. The introduction of g-C₃N₄ nanosheets increased the glass transition temperature and crystallinity of the nanocomposites, leading to the improved mechanical performance. Compared with the pure PVA, the PVA/g-C₃N₄ nanocomposite with 0.50 wt% g-C₃N₄ nanosheets showed ~70.7% enhancement in tensile strength, up from 51.2 MPa to 87.4 MPa.
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